Articles | Volume 44, issue 2
https://doi.org/10.5194/jm-44-213-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-44-213-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Aug 2025
Research article |
| 06 Aug 2025
| 06 Aug 2025
Morphology of Pulleniatina (planktonic foraminifera) from optical microscopy, micro-CT, and SEM investigations
Alessio Fabbrini
CORRESPONDING AUTHOR
Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK
Department of Geography, University of Galway, Distillery Road 8, Galway, H91 CF50, Ireland
Paul N. Pearson
Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK
Anieke Brombacher
Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton, SO14 3ZH, UK
Department of Earth and Planetary Sciences, Yale University, 210 Whitney Avenue, New Haven, CT 06511, USA
Francesco Iacoviello
Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, Gower Street, London, WC1E 6BT, UK
Thomas H. G. Ezard
Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton, SO14 3ZH, UK
Bridget S. Wade
Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK
Related authors
Alessio Fabbrini, Maria Rose Petrizzo, Isabella Premoli Silva, Luca M. Foresi, and Bridget S. Wade
J. Micropalaeontol., 43, 121–138, https://doi.org/10.5194/jm-43-121-2024, https://doi.org/10.5194/jm-43-121-2024, 2024
Short summary
Short summary
We report on the rediscovery of Globigerina bollii, a planktonic foraminifer described by Cita and Premoli Silva (1960) in the Mediterranean Basin. We redescribe G. bollii as a valid species belonging to the genus Globoturborotalita. We report and summarise all the recordings of the taxon in the scientific literature. Then we discuss how the taxon might be a palaeogeographical indicator of the intermittent gateways between the Mediterranean Sea, Paratethys, and Indian Ocean.
Marcin Latas, Paul N. Pearson, Christopher R. Poole, Alessio Fabbrini, and Bridget S. Wade
J. Micropalaeontol., 42, 57–81, https://doi.org/10.5194/jm-42-57-2023, https://doi.org/10.5194/jm-42-57-2023, 2023
Short summary
Short summary
Planktonic foraminifera are microscopic single-celled organisms populating world oceans. They have one of the most complete fossil records; thanks to their great abundance, they are widely used to study past marine environments. We analysed and measured series of foraminifera shells from Indo-Pacific sites, which led to the description of a new species of fossil planktonic foraminifera. Part of its population exhibits pink pigmentation, which is only the third such case among known species.
Lukas Jonkers, Tonke Strack, Montserrat Alonso-Garcia, Simon D'haenens, Robert Huber, Michal Kucera, Iván Hernández-Almeida, Chloe L. C. Jones, Brett Metcalfe, Rajeev Saraswat, Lóránd Silye, Sanjay K. Verma, Muhamad Naim Abd Malek, Gerald Auer, Cátia F. Barbosa, Maria A. Barcena, Karl-Heinz Baumann, Flavia Boscolo-Galazzo, Joeven Austine S. Calvelo, Lucilla Capotondi, Martina Caratelli, Jorge Cardich, Humberto Carvajal-Chitty, Markéta Chroustová, Helen K. Coxall, Renata M. de Mello, Anne de Vernal, Paula Diz, Kirsty M. Edgar, Helena L. Filipsson, Ángela Fraguas, Heather L. Furlong, Giacomo Galli, Natalia L. García Chapori, Robyn Granger, Jeroen Groeneveld, Adil Imam, Rebecca Jackson, David Lazarus, Julie Meilland, Marína Molčan Matejová, Raphael Morard, Caterina Morigi, Sven N. Nielsen, Diana Ochoa, Maria Rose Petrizzo, Andrés S. Rigual-Hernández, Marina C. Rillo, Matthew L. Staitis, Gamze Tanık, Raúl Tapia, Nishant Vats, Bridget S. Wade, and Anna E. Weinmann
J. Micropalaeontol., 44, 145–168, https://doi.org/10.5194/jm-44-145-2025, https://doi.org/10.5194/jm-44-145-2025, 2025
Short summary
Short summary
Our study provides guidelines improving the reuse of marine microfossil assemblage data, which are valuable for understanding past ecosystems and environmental change. Based on a survey of 113 researchers, we identified key data attributes required for effective reuse. Analysis of a selection of datasets available online reveals a gap between the attributes scientists consider essential and the data currently available, highlighting the need for clearer data documentation and sharing practices.
Alex Searle-Barnes, Anieke Brombacher, Orestis Katsamenis, Kathryn Rankin, Mark Mavrogordato, and Thomas Ezard
J. Micropalaeontol., 44, 107–117, https://doi.org/10.5194/jm-44-107-2025, https://doi.org/10.5194/jm-44-107-2025, 2025
Short summary
Short summary
We present an operating procedure that is advantageous for the high-throughput analysis of specimens, yielding consistency between scan data, and a method of sample preparation that does not include glue, gel, or solvents, all of which cause artefacts within the radiographs. We demonstrate how to balance beam power, exposure time, and detector settings with obtainable resolution to ensure the analytical protocols deliver optimal data and scan speed.
Flavia Boscolo-Galazzo, David Evans, Elaine M. Mawbey, William R. Gray, Paul N. Pearson, and Bridget S. Wade
Biogeosciences, 22, 1095–1113, https://doi.org/10.5194/bg-22-1095-2025, https://doi.org/10.5194/bg-22-1095-2025, 2025
Short summary
Short summary
Here we compare the Mg / Ca and oxygen isotope signatures for 57 recent to fossil species of planktonic foraminifera for the last 15 Myr. We find the occurrence of lineage-specific offsets in Mg / Ca conservative between ancestor-descendent species. Taking into account species kinship significantly improves temperature reconstructions, and we suggest that the occurrence of Mg / Ca offsets in modern species results from their evolution when ocean properties were different from today's.
Tirza Maria Weitkamp, Mohammad Javad Razmjooei, Paul Nicholas Pearson, and Helen Katherine Coxall
J. Micropalaeontol., 44, 1–78, https://doi.org/10.5194/jm-44-1-2025, https://doi.org/10.5194/jm-44-1-2025, 2025
Short summary
Short summary
Deep Sea Drilling Project Site 407, near Iceland, offers a valuable 25-million-year record of planktonic foraminifera evolution from the Late Cenozoic. Species counts and ranges, assemblage changes, and biostratigraphic zones were identified. Key findings include the shifts in species dominance and diversity. Challenges include sediment gaps and missing biozone markers. We aim to enhance the Neogene–Quaternary Middle Atlas and improve the North Atlantic palaeoceanography and biostratigraphy.
Alessio Fabbrini, Maria Rose Petrizzo, Isabella Premoli Silva, Luca M. Foresi, and Bridget S. Wade
J. Micropalaeontol., 43, 121–138, https://doi.org/10.5194/jm-43-121-2024, https://doi.org/10.5194/jm-43-121-2024, 2024
Short summary
Short summary
We report on the rediscovery of Globigerina bollii, a planktonic foraminifer described by Cita and Premoli Silva (1960) in the Mediterranean Basin. We redescribe G. bollii as a valid species belonging to the genus Globoturborotalita. We report and summarise all the recordings of the taxon in the scientific literature. Then we discuss how the taxon might be a palaeogeographical indicator of the intermittent gateways between the Mediterranean Sea, Paratethys, and Indian Ocean.
Paul N. Pearson, Jeremy Young, David J. King, and Bridget S. Wade
J. Micropalaeontol., 42, 211–255, https://doi.org/10.5194/jm-42-211-2023, https://doi.org/10.5194/jm-42-211-2023, 2023
Short summary
Short summary
Planktonic foraminifera are marine plankton that have a long and continuous fossil record. They are used for correlating and dating ocean sediments and studying evolution and past climates. This paper presents new information about Pulleniatina, one of the most widespread and abundant groups, from an important site in the Pacific Ocean. It also brings together a very large amount of information on the fossil record from other sites globally.
Marcin Latas, Paul N. Pearson, Christopher R. Poole, Alessio Fabbrini, and Bridget S. Wade
J. Micropalaeontol., 42, 57–81, https://doi.org/10.5194/jm-42-57-2023, https://doi.org/10.5194/jm-42-57-2023, 2023
Short summary
Short summary
Planktonic foraminifera are microscopic single-celled organisms populating world oceans. They have one of the most complete fossil records; thanks to their great abundance, they are widely used to study past marine environments. We analysed and measured series of foraminifera shells from Indo-Pacific sites, which led to the description of a new species of fossil planktonic foraminifera. Part of its population exhibits pink pigmentation, which is only the third such case among known species.
Anieke Brombacher, Alex Searle-Barnes, Wenshu Zhang, and Thomas H. G. Ezard
J. Micropalaeontol., 41, 149–164, https://doi.org/10.5194/jm-41-149-2022, https://doi.org/10.5194/jm-41-149-2022, 2022
Short summary
Short summary
Foraminifera are sand-grain-sized marine organisms that build spiral shells. When they die, the shells sink to the sea floor where they are preserved for millions of years. We wrote a software package that automatically analyses the fossil spirals to learn about evolution of new shapes in the geological past. With this software we will be able to analyse larger datasets than we currently can, which will improve our understanding of the evolution of new species.
Paul N. Pearson, Eleanor John, Bridget S. Wade, Simon D'haenens, and Caroline H. Lear
J. Micropalaeontol., 41, 107–127, https://doi.org/10.5194/jm-41-107-2022, https://doi.org/10.5194/jm-41-107-2022, 2022
Short summary
Short summary
The microscopic shells of planktonic foraminifera accumulate on the sea floor over millions of years, providing a rich archive for understanding the history of the oceans. We examined an extinct group that flourished between about 63 and 32 million years ago using scanning electron microscopy and show that they were covered with needle-like spines in life. This has implications for analytical methods that we use to determine past seawater temperature and acidity.
Flavia Boscolo-Galazzo, Amy Jones, Tom Dunkley Jones, Katherine A. Crichton, Bridget S. Wade, and Paul N. Pearson
Biogeosciences, 19, 743–762, https://doi.org/10.5194/bg-19-743-2022, https://doi.org/10.5194/bg-19-743-2022, 2022
Short summary
Short summary
Deep-living organisms are a major yet poorly known component of ocean biomass. Here we reconstruct the evolution of deep-living zooplankton and phytoplankton. Deep-dwelling zooplankton and phytoplankton did not occur 15 Myr ago, when the ocean was several degrees warmer than today. Deep-dwelling species first evolve around 7.5 Myr ago, following global climate cooling. Their evolution was driven by colder ocean temperatures allowing more food, oxygen, and light at depth.
Katherine A. Crichton, Andy Ridgwell, Daniel J. Lunt, Alex Farnsworth, and Paul N. Pearson
Clim. Past, 17, 2223–2254, https://doi.org/10.5194/cp-17-2223-2021, https://doi.org/10.5194/cp-17-2223-2021, 2021
Short summary
Short summary
The middle Miocene (15 Ma) was a period of global warmth up to 8 °C warmer than present. We investigate changes in ocean circulation and heat distribution since the middle Miocene and the cooling to the present using the cGENIE Earth system model. We create seven time slices at ~2.5 Myr intervals, constrained with paleo-proxy data, showing a progressive reduction in atmospheric CO2 and a strengthening of the Atlantic Meridional Overturning Circulation.
Jakub Witkowski, Karolina Bryłka, Steven M. Bohaty, Elżbieta Mydłowska, Donald E. Penman, and Bridget S. Wade
Clim. Past, 17, 1937–1954, https://doi.org/10.5194/cp-17-1937-2021, https://doi.org/10.5194/cp-17-1937-2021, 2021
Short summary
Short summary
We reconstruct the history of biogenic opal accumulation through the early to middle Paleogene in the western North Atlantic. Biogenic opal accumulation was controlled by deepwater temperatures, atmospheric greenhouse gas levels, and continental weathering intensity. Overturning circulation in the Atlantic was established at the end of the extreme early Eocene greenhouse warmth period. We also show that the strength of the link between climate and continental weathering varies through time.
Bridget S. Wade, Mohammed H. Aljahdali, Yahya A. Mufrreh, Abdullah M. Memesh, Salih A. AlSoubhi, and Iyad S. Zalmout
J. Micropalaeontol., 40, 145–161, https://doi.org/10.5194/jm-40-145-2021, https://doi.org/10.5194/jm-40-145-2021, 2021
Short summary
Short summary
We examined the planktonic foraminifera (calcareous zooplankton) from a section in northern Saudi Arabia. We found the assemblages to be diverse, well-preserved and of late Eocene age. Our study provides new insights into the stratigraphic ranges of many species and indicates that the late Eocene had a higher tropical/subtropical diversity of planktonic foraminifera than previously reported.
David K. Hutchinson, Helen K. Coxall, Daniel J. Lunt, Margret Steinthorsdottir, Agatha M. de Boer, Michiel Baatsen, Anna von der Heydt, Matthew Huber, Alan T. Kennedy-Asser, Lutz Kunzmann, Jean-Baptiste Ladant, Caroline H. Lear, Karolin Moraweck, Paul N. Pearson, Emanuela Piga, Matthew J. Pound, Ulrich Salzmann, Howie D. Scher, Willem P. Sijp, Kasia K. Śliwińska, Paul A. Wilson, and Zhongshi Zhang
Clim. Past, 17, 269–315, https://doi.org/10.5194/cp-17-269-2021, https://doi.org/10.5194/cp-17-269-2021, 2021
Short summary
Short summary
The Eocene–Oligocene transition was a major climate cooling event from a largely ice-free world to the first major glaciation of Antarctica, approximately 34 million years ago. This paper reviews observed changes in temperature, CO2 and ice sheets from marine and land-based records at this time. We present a new model–data comparison of this transition and find that CO2-forced cooling provides the best explanation of the observed global temperature changes.
Katherine A. Crichton, Jamie D. Wilson, Andy Ridgwell, and Paul N. Pearson
Geosci. Model Dev., 14, 125–149, https://doi.org/10.5194/gmd-14-125-2021, https://doi.org/10.5194/gmd-14-125-2021, 2021
Short summary
Short summary
Temperature is a controller of metabolic processes and therefore also a controller of the ocean's biological carbon pump (BCP). We calibrate a temperature-dependent version of the BCP in the cGENIE Earth system model. Since the pre-industrial period, warming has intensified near-surface nutrient recycling, supporting production and largely offsetting stratification-induced surface nutrient limitation. But at the same time less carbon that sinks out of the surface then reaches the deep ocean.
Kirsty M. Edgar, Steven M. Bohaty, Helen K. Coxall, Paul R. Bown, Sietske J. Batenburg, Caroline H. Lear, and Paul N. Pearson
J. Micropalaeontol., 39, 117–138, https://doi.org/10.5194/jm-39-117-2020, https://doi.org/10.5194/jm-39-117-2020, 2020
Short summary
Short summary
We identify the first continuous carbonate-bearing sediment record from the tropical ocean that spans the entirety of the global warming event, the Middle Eocene Climatic Optimum, ca. 40 Ma. We determine significant mismatches between middle Eocene calcareous microfossil datums from the tropical Pacific Ocean and established low-latitude zonation schemes. We highlight the potential of ODP Site 865 for future investigations into environmental and biotic changes throughout the early Paleogene.
Christopher J. Hollis, Tom Dunkley Jones, Eleni Anagnostou, Peter K. Bijl, Marlow Julius Cramwinckel, Ying Cui, Gerald R. Dickens, Kirsty M. Edgar, Yvette Eley, David Evans, Gavin L. Foster, Joost Frieling, Gordon N. Inglis, Elizabeth M. Kennedy, Reinhard Kozdon, Vittoria Lauretano, Caroline H. Lear, Kate Littler, Lucas Lourens, A. Nele Meckler, B. David A. Naafs, Heiko Pälike, Richard D. Pancost, Paul N. Pearson, Ursula Röhl, Dana L. Royer, Ulrich Salzmann, Brian A. Schubert, Hannu Seebeck, Appy Sluijs, Robert P. Speijer, Peter Stassen, Jessica Tierney, Aradhna Tripati, Bridget Wade, Thomas Westerhold, Caitlyn Witkowski, James C. Zachos, Yi Ge Zhang, Matthew Huber, and Daniel J. Lunt
Geosci. Model Dev., 12, 3149–3206, https://doi.org/10.5194/gmd-12-3149-2019, https://doi.org/10.5194/gmd-12-3149-2019, 2019
Short summary
Short summary
The Deep-Time Model Intercomparison Project (DeepMIP) is a model–data intercomparison of the early Eocene (around 55 million years ago), the last time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Previously, we outlined the experimental design for climate model simulations. Here, we outline the methods used for compilation and analysis of climate proxy data. The resulting climate
atlaswill provide insights into the mechanisms that control past warm climate states.
Isabel S. Fenton, Ulrike Baranowski, Flavia Boscolo-Galazzo, Hannah Cheales, Lyndsey Fox, David J. King, Christina Larkin, Marcin Latas, Diederik Liebrand, C. Giles Miller, Katrina Nilsson-Kerr, Emanuela Piga, Hazel Pugh, Serginio Remmelzwaal, Zoe A. Roseby, Yvonne M. Smith, Stephen Stukins, Ben Taylor, Adam Woodhouse, Savannah Worne, Paul N. Pearson, Christopher R. Poole, Bridget S. Wade, and Andy Purvis
J. Micropalaeontol., 37, 431–443, https://doi.org/10.5194/jm-37-431-2018, https://doi.org/10.5194/jm-37-431-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Twenty-three scientists identified a set of 100 planktonic foraminifera, noting their confidence in each identification. The median accuracy of students was 57 %; 79 % for experienced researchers. Where they were confident in the identifications, the values are 75 % and 93 %, respectively. Accuracy was significantly higher if the students had been taught how to identify species.
Helen M. Beddow, Diederik Liebrand, Douglas S. Wilson, Frits J. Hilgen, Appy Sluijs, Bridget S. Wade, and Lucas J. Lourens
Clim. Past, 14, 255–270, https://doi.org/10.5194/cp-14-255-2018, https://doi.org/10.5194/cp-14-255-2018, 2018
Short summary
Short summary
We present two astronomy-based timescales for climate records from the Pacific Ocean. These records range from 24 to 22 million years ago, a time period when Earth was warmer than today and the only land ice was located on Antarctica. We use tectonic plate-pair spreading rates to test the two timescales, which shows that the carbonate record yields the best timescale. In turn, this implies that Earth’s climate system and carbon cycle responded slowly to changes in incoming solar radiation.
Paul N. Pearson and IODP Expedition 363 Shipboard Scientific
Party
J. Micropalaeontol., 37, 97–104, https://doi.org/10.5194/jm-37-97-2018, https://doi.org/10.5194/jm-37-97-2018, 2018
Short summary
Short summary
We describe an unusual millimetre-long tube that was discovered in sediment from the deep sea floor. The tube was made by a single-celled organism by cementing together sedimentary grains from its environment. The specimen is unusual because it implies that the organism used a very high degree of discrimination in selecting its grains, as they are all of one type and most are oriented the same way. It raises intriguing questions of how the organism accomplished this activity.
Daniel J. Lunt, Matthew Huber, Eleni Anagnostou, Michiel L. J. Baatsen, Rodrigo Caballero, Rob DeConto, Henk A. Dijkstra, Yannick Donnadieu, David Evans, Ran Feng, Gavin L. Foster, Ed Gasson, Anna S. von der Heydt, Chris J. Hollis, Gordon N. Inglis, Stephen M. Jones, Jeff Kiehl, Sandy Kirtland Turner, Robert L. Korty, Reinhardt Kozdon, Srinath Krishnan, Jean-Baptiste Ladant, Petra Langebroek, Caroline H. Lear, Allegra N. LeGrande, Kate Littler, Paul Markwick, Bette Otto-Bliesner, Paul Pearson, Christopher J. Poulsen, Ulrich Salzmann, Christine Shields, Kathryn Snell, Michael Stärz, James Super, Clay Tabor, Jessica E. Tierney, Gregory J. L. Tourte, Aradhna Tripati, Garland R. Upchurch, Bridget S. Wade, Scott L. Wing, Arne M. E. Winguth, Nicky M. Wright, James C. Zachos, and Richard E. Zeebe
Geosci. Model Dev., 10, 889–901, https://doi.org/10.5194/gmd-10-889-2017, https://doi.org/10.5194/gmd-10-889-2017, 2017
Short summary
Short summary
In this paper we describe the experimental design for a set of simulations which will be carried out by a range of climate models, all investigating the climate of the Eocene, about 50 million years ago. The intercomparison of model results is called 'DeepMIP', and we anticipate that we will contribute to the next IPCC report through an analysis of these simulations and the geological data to which we will compare them.
David Evans, Bridget S. Wade, Michael Henehan, Jonathan Erez, and Wolfgang Müller
Clim. Past, 12, 819–835, https://doi.org/10.5194/cp-12-819-2016, https://doi.org/10.5194/cp-12-819-2016, 2016
Short summary
Short summary
We show that seawater pH exerts a substantial control on planktic foraminifera Mg / Ca, a widely applied palaeothermometer. As a result, temperature reconstructions based on this proxy are likely inaccurate over climatic events associated with a significant change in pH. We examine the implications of our findings for hydrological and temperature shifts over the Paleocene-Eocene Thermal Maximum and for the degree of surface ocean precursor cooling before the Eocene-Oligocene transition.
P. N. Pearson and E. Thomas
Clim. Past, 11, 95–104, https://doi.org/10.5194/cp-11-95-2015, https://doi.org/10.5194/cp-11-95-2015, 2015
Short summary
Short summary
The Paleocene-to-Eocene thermal maximum was a period of extreme global warming caused by perturbation to the global carbon cycle 56Mya. Evidence from marine sediment cores has been used to suggest that the onset of the event was very rapid, over just 11 years of annually resolved sedimentation. However, we argue that the supposed annual layers are an artifact caused by drilling disturbance, and that the microfossil content of the cores shows the onset took in the order of thousands of years.
Paul N. Pearson, Sam L. Evans, and James Evans
J. Micropalaeontol., 34, 59–64, https://doi.org/10.1144/jmpaleo2013-032, https://doi.org/10.1144/jmpaleo2013-032, 2015
P. N. Pearson and W. Hudson
Sci. Dril., 18, 13–17, https://doi.org/10.5194/sd-18-13-2014, https://doi.org/10.5194/sd-18-13-2014, 2014
Related subject area
Planktic foraminifera
Upper Oligocene to Pleistocene planktonic foraminifera stratigraphy at North Atlantic DSDP Site 407, Reykjanes Ridge: diversity trends and biozonation using modern Neogene taxonomic concepts
Pliocene–Pleistocene warm-water incursions and water mass changes on the Ross Sea continental shelf (Antarctica) based on foraminifera from IODP Expedition 374
Rediscovering Globigerina bollii Cita and Premoli Silva 1960
Biochronology and evolution of Pulleniatina (planktonic foraminifera)
Globigerinoides rublobatus – a new species of Pleistocene planktonic foraminifera
Analysing planktonic foraminiferal growth in three dimensions with foram3D: an R package for automated trait measurements from CT scans
Spine-like structures in Paleogene muricate planktonic foraminifera
Taxonomic review of living planktonic foraminifera
Upper Eocene planktonic foraminifera from northern Saudi Arabia: implications for stratigraphic ranges
Jurassic planktic foraminifera from the Polish Basin
Automated analysis of foraminifera fossil records by image classification using a convolutional neural network
Middle Jurassic (Bajocian) planktonic foraminifera from the northwest Australian margin
Ontogenetic disparity in early planktic foraminifers
Seasonal and interannual variability in population dynamics of planktic foraminifers off Puerto Rico (Caribbean Sea)
Calcification depth of deep-dwelling planktonic foraminifera from the eastern North Atlantic constrained by stable oxygen isotope ratios of shells from stratified plankton tows
Reproducibility of species recognition in modern planktonic foraminifera and its implications for analyses of community structure
Factors affecting consistency and accuracy in identifying modern macroperforate planktonic foraminifera
Tirza Maria Weitkamp, Mohammad Javad Razmjooei, Paul Nicholas Pearson, and Helen Katherine Coxall
J. Micropalaeontol., 44, 1–78, https://doi.org/10.5194/jm-44-1-2025, https://doi.org/10.5194/jm-44-1-2025, 2025
Short summary
Short summary
Deep Sea Drilling Project Site 407, near Iceland, offers a valuable 25-million-year record of planktonic foraminifera evolution from the Late Cenozoic. Species counts and ranges, assemblage changes, and biostratigraphic zones were identified. Key findings include the shifts in species dominance and diversity. Challenges include sediment gaps and missing biozone markers. We aim to enhance the Neogene–Quaternary Middle Atlas and improve the North Atlantic palaeoceanography and biostratigraphy.
Julia L. Seidenstein, R. Mark Leckie, Robert McKay, Laura De Santis, David Harwood, and IODP Expedition 374 Scientists
J. Micropalaeontol., 43, 211–238, https://doi.org/10.5194/jm-43-211-2024, https://doi.org/10.5194/jm-43-211-2024, 2024
Short summary
Short summary
Warmer waters in the Southern Ocean have led to the loss of Antarctic ice during past interglacial times. The shells of foraminifera are preserved in Ross Sea sediment, which is collected in cores. Benthic species from Site U1523 inform us about changing water masses and current activity, including incursions of Circumpolar Deep Water. Warm water planktic species were found in sediment samples from four intervals within 3.72–1.82 million years ago, indicating warmer than present conditions.
Alessio Fabbrini, Maria Rose Petrizzo, Isabella Premoli Silva, Luca M. Foresi, and Bridget S. Wade
J. Micropalaeontol., 43, 121–138, https://doi.org/10.5194/jm-43-121-2024, https://doi.org/10.5194/jm-43-121-2024, 2024
Short summary
Short summary
We report on the rediscovery of Globigerina bollii, a planktonic foraminifer described by Cita and Premoli Silva (1960) in the Mediterranean Basin. We redescribe G. bollii as a valid species belonging to the genus Globoturborotalita. We report and summarise all the recordings of the taxon in the scientific literature. Then we discuss how the taxon might be a palaeogeographical indicator of the intermittent gateways between the Mediterranean Sea, Paratethys, and Indian Ocean.
Paul N. Pearson, Jeremy Young, David J. King, and Bridget S. Wade
J. Micropalaeontol., 42, 211–255, https://doi.org/10.5194/jm-42-211-2023, https://doi.org/10.5194/jm-42-211-2023, 2023
Short summary
Short summary
Planktonic foraminifera are marine plankton that have a long and continuous fossil record. They are used for correlating and dating ocean sediments and studying evolution and past climates. This paper presents new information about Pulleniatina, one of the most widespread and abundant groups, from an important site in the Pacific Ocean. It also brings together a very large amount of information on the fossil record from other sites globally.
Marcin Latas, Paul N. Pearson, Christopher R. Poole, Alessio Fabbrini, and Bridget S. Wade
J. Micropalaeontol., 42, 57–81, https://doi.org/10.5194/jm-42-57-2023, https://doi.org/10.5194/jm-42-57-2023, 2023
Short summary
Short summary
Planktonic foraminifera are microscopic single-celled organisms populating world oceans. They have one of the most complete fossil records; thanks to their great abundance, they are widely used to study past marine environments. We analysed and measured series of foraminifera shells from Indo-Pacific sites, which led to the description of a new species of fossil planktonic foraminifera. Part of its population exhibits pink pigmentation, which is only the third such case among known species.
Anieke Brombacher, Alex Searle-Barnes, Wenshu Zhang, and Thomas H. G. Ezard
J. Micropalaeontol., 41, 149–164, https://doi.org/10.5194/jm-41-149-2022, https://doi.org/10.5194/jm-41-149-2022, 2022
Short summary
Short summary
Foraminifera are sand-grain-sized marine organisms that build spiral shells. When they die, the shells sink to the sea floor where they are preserved for millions of years. We wrote a software package that automatically analyses the fossil spirals to learn about evolution of new shapes in the geological past. With this software we will be able to analyse larger datasets than we currently can, which will improve our understanding of the evolution of new species.
Paul N. Pearson, Eleanor John, Bridget S. Wade, Simon D'haenens, and Caroline H. Lear
J. Micropalaeontol., 41, 107–127, https://doi.org/10.5194/jm-41-107-2022, https://doi.org/10.5194/jm-41-107-2022, 2022
Short summary
Short summary
The microscopic shells of planktonic foraminifera accumulate on the sea floor over millions of years, providing a rich archive for understanding the history of the oceans. We examined an extinct group that flourished between about 63 and 32 million years ago using scanning electron microscopy and show that they were covered with needle-like spines in life. This has implications for analytical methods that we use to determine past seawater temperature and acidity.
Geert-Jan A. Brummer and Michal Kučera
J. Micropalaeontol., 41, 29–74, https://doi.org/10.5194/jm-41-29-2022, https://doi.org/10.5194/jm-41-29-2022, 2022
Short summary
Short summary
To aid researchers working with living planktonic foraminifera, we provide a comprehensive review of names that we consider appropriate for extant species. We discuss the reasons for the decisions we made and provide a list of species and genus-level names as well as other names that have been used in the past but are considered inappropriate for living taxa, stating the reasons.
Bridget S. Wade, Mohammed H. Aljahdali, Yahya A. Mufrreh, Abdullah M. Memesh, Salih A. AlSoubhi, and Iyad S. Zalmout
J. Micropalaeontol., 40, 145–161, https://doi.org/10.5194/jm-40-145-2021, https://doi.org/10.5194/jm-40-145-2021, 2021
Short summary
Short summary
We examined the planktonic foraminifera (calcareous zooplankton) from a section in northern Saudi Arabia. We found the assemblages to be diverse, well-preserved and of late Eocene age. Our study provides new insights into the stratigraphic ranges of many species and indicates that the late Eocene had a higher tropical/subtropical diversity of planktonic foraminifera than previously reported.
Maria Gajewska, Zofia Dubicka, and Malcolm B. Hart
J. Micropalaeontol., 40, 1–13, https://doi.org/10.5194/jm-40-1-2021, https://doi.org/10.5194/jm-40-1-2021, 2021
Ross Marchant, Martin Tetard, Adnya Pratiwi, Michael Adebayo, and Thibault de Garidel-Thoron
J. Micropalaeontol., 39, 183–202, https://doi.org/10.5194/jm-39-183-2020, https://doi.org/10.5194/jm-39-183-2020, 2020
Short summary
Short summary
Foraminifera are marine microorganisms with a calcium carbonate shell. Their fossil remains build up on the seafloor, forming kilometres of sediment over time. From analysis of the foraminiferal record we can estimate past climate conditions and the geological history of the Earth. We have developed an artificial intelligence system for automatically identifying foraminifera species, replacing the time-consuming manual approach and thus helping to make these analyses more efficient and accurate.
Marjorie Apthorpe
J. Micropalaeontol., 39, 93–115, https://doi.org/10.5194/jm-39-93-2020, https://doi.org/10.5194/jm-39-93-2020, 2020
Short summary
Short summary
Three well-preserved new species of Middle Jurassic (Bajocian) planktonic foraminifera from the continental margin of northwest Australia are described. This is on the southern shelf of the Tethys Ocean, and these planktonics are the first to be reported from the Jurassic Southern Hemisphere. Described as new are Globuligerina bathoniana australiana n. ssp., G. altissapertura n. sp. and Mermaidogerina loopae n. gen. n. sp. The research is part of a study of regional Jurassic foraminifera.
Sophie Kendall, Felix Gradstein, Christopher Jones, Oliver T. Lord, and Daniela N. Schmidt
J. Micropalaeontol., 39, 27–39, https://doi.org/10.5194/jm-39-27-2020, https://doi.org/10.5194/jm-39-27-2020, 2020
Short summary
Short summary
Changes in morphology during development can have profound impacts on an organism but are hard to quantify as we lack preservation in the fossil record. As they grow by adding chambers, planktic foraminifera are an ideal group to study changes in growth in development. We analyse four different species of Jurassic foraminifers using a micro-CT scanner. The low morphological variability suggests that strong constraints, described in the modern ocean, were already acting on Jurassic specimens.
Anna Jentzen, Joachim Schönfeld, Agnes K. M. Weiner, Manuel F. G. Weinkauf, Dirk Nürnberg, and Michal Kučera
J. Micropalaeontol., 38, 231–247, https://doi.org/10.5194/jm-38-231-2019, https://doi.org/10.5194/jm-38-231-2019, 2019
Short summary
Short summary
The study assessed the population dynamics of living planktic foraminifers on a weekly, seasonal, and interannual timescale off the coast of Puerto Rico to improve our understanding of short- and long-term variations. The results indicate a seasonal change of the faunal composition, and over the last decades. Lower standing stocks and lower stable carbon isotope values of foraminifers in shallow waters can be linked to the hurricane Sandy, which passed the Greater Antilles during autumn 2012.
Andreia Rebotim, Antje Helga Luise Voelker, Lukas Jonkers, Joanna J. Waniek, Michael Schulz, and Michal Kucera
J. Micropalaeontol., 38, 113–131, https://doi.org/10.5194/jm-38-113-2019, https://doi.org/10.5194/jm-38-113-2019, 2019
Short summary
Short summary
To reconstruct subsurface water conditions using deep-dwelling planktonic foraminifera, we must fully understand how the oxygen isotope signal incorporates into their shell. We report δ18O in four species sampled in the eastern North Atlantic with plankton tows. We assess the size and crust effect on the isotopic δ18O and compared them with predictions from two equations. We reveal different patterns of calcite addition with depth, highlighting the need to perform species-specific calibrations.
Nadia Al-Sabouni, Isabel S. Fenton, Richard J. Telford, and Michal Kučera
J. Micropalaeontol., 37, 519–534, https://doi.org/10.5194/jm-37-519-2018, https://doi.org/10.5194/jm-37-519-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Overall, 21 researchers from across the globe identified sets of 300 specimens or digital images of planktonic foraminifera. Digital identifications tended to be more disparate. Participants trained by the same person often had more similar identifications. Disagreements hardly affected transfer-function temperature estimates but produced larger differences in diversity metrics.
Isabel S. Fenton, Ulrike Baranowski, Flavia Boscolo-Galazzo, Hannah Cheales, Lyndsey Fox, David J. King, Christina Larkin, Marcin Latas, Diederik Liebrand, C. Giles Miller, Katrina Nilsson-Kerr, Emanuela Piga, Hazel Pugh, Serginio Remmelzwaal, Zoe A. Roseby, Yvonne M. Smith, Stephen Stukins, Ben Taylor, Adam Woodhouse, Savannah Worne, Paul N. Pearson, Christopher R. Poole, Bridget S. Wade, and Andy Purvis
J. Micropalaeontol., 37, 431–443, https://doi.org/10.5194/jm-37-431-2018, https://doi.org/10.5194/jm-37-431-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Twenty-three scientists identified a set of 100 planktonic foraminifera, noting their confidence in each identification. The median accuracy of students was 57 %; 79 % for experienced researchers. Where they were confident in the identifications, the values are 75 % and 93 %, respectively. Accuracy was significantly higher if the students had been taught how to identify species.
Cited articles
Aurahs, R., Göker, M., Grimm, G. W., Hemleben, V., Hemleben, C., Schiebel, R., and Kučera, M.: Using the multiple analysis approach to reconstruct phylogenetic relationships among planktonic Foraminifera from highly divergent and length-polymorphic SSU rDNA sequences, Bioinformatics and Biology Insights, 3, BBI-S3334, https://doi.org/10.4137/BBI.S3334, 2009.
Banner, F. T. and Blow, W. H.: The origin, evolution and taxonomy of the foraminiferal genus Pulleniatina Cushman, 1927, Micropaleontology, 13, 133–162, 1967.
Bé, A. W. H.: Gametogenic calcification in a spinose planktonic foraminifer, Globigerinoides sacculifer (Brady), Mar. Micropaleontol., 5, 283–310, 1980.
Bé, A. W. H., Hemleben, C., Anderson, O. R., and Spindler, M.: Pore structures in planktonic foraminifera, J. Foramin. Res., 10, 117–128, https://doi.org/10.2113/gsjfr.10.2.117, 1980.
Belyea, P. R. and Thunell, R. C.: Fourier shape analysis and planktonic foraminiferal evolution: the Neogloboquadrina-Pulleniatina lineages, J. Paleontol., 58, 1026–1040, 1984.
Berger, W. H. and Soutar, A.: Planktonic foraminifera: field experiment on production rate, Science, 156, 1495–1497, 1967.
Biolzi, M.: Morphometric analyses of the Late Neogene planktonic foraminiferal lineage Neogloboquadrina dutertrei, Mar. Micropaleontol., 18, 129–142, 1991.
Bolli, H. M., Loeblich, A. R., and Tappan, H.: Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae, in: Studies in Foraminifera, edited by: Loeblich, A. R., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E., and Troelsen, J. C., United States National Museum Bulletin 215, 3–50, 1957.
Bolli, H. M., Saunders, J. B., and Perch-Nielsen, K. (Eds.): Plankton stratigraphy: volume 1, Planktic Foraminifera, Calcareous Nannofossils and Calpionellids, Cambridge University Press, Cambridge, ISBN 0 521 23576 6, 1985.
Brady, H. B.: Report on the foraminifera dredged by HMS Challenger, during the years 1873–1876, Report of Scientific Results of the Exploration Voyage of HMS Challenger, Zoology, 9, 1–814, 1884.
Brombacher, A., Searle-Barnes, A., Zhang, W., and Ezard, T. H. G.: Analysing planktonic foraminiferal growth in three dimensions with foram3D: an R package for automated trait measurements from CT scans, J. Micropalaeontol., 41, 149–164, https://doi.org/10.5194/jm-41-149-2022, 2022.
Brönnimann, P. and Resig, J.: A Neogene globigerinacean biochronologic time-scale of the southwestern Pacific, Initial Rep. Deep Sea, 7, 1235–1469, https://doi.org/10.2973/dsdp.proc.7.128.1971, 1971.
Brummer, G. J. A. and Kroon, D.: Planktonic foraminifers as tracers of ocean-climate history: Ontogeny, relationships and preservation of modern species and stable isotopes, phenotypes and assemblage distribution in different water masses, Free University Press, ISBN 9789062567447, 1988.
Brummer, G.-J. A. and Kučera, M.: Taxonomic review of living planktonic foraminifera, J. Micropalaeontol., 41, 29–74, https://doi.org/10.5194/jm-41-29-2022, 2022.
Brummer, G. J. A., Hemleben, C., and Spindler, M.: Ontogeny of extant spinose planktonic foraminifera (Globigerinidae): A concept exemplified by Globigerinoides sacculifer (Brady) and G. ruber (d'Orbigny), Mar. Micropaleontol., 12, 357–381, 1987.
Burke, J. E., Renema, W., Schiebel, R., and Hull, P. M.: Three-dimensional analysis of inter-and intraspecific variation in ontogenetic growth trajectories of planktonic foraminifera, Mar. Micropaleontol., 155, 101794, https://doi.org/10.1016/j.marmicro.2019.101794, 2020.
Burt, B. J. and Scott, G. H.: Spinosity and coiling geometry in Pulleniatina (foraminifera), J. Foramin. Res., 5, 166–175, 1975.
Chen, W. L., Kang, J. C., Kimoto, K., Song, Y. F., Yin, G. C., Swisher, R. E., Lu, C. H., Kuo, L. W., Huang, J. J., and Lo, L.: µ-Computed tomographic data of fossil planktonic foraminifera from the western Pacific Ocean: a dataset concerning two biostratigraphic events during the Early Pleistocene, Frontiers in Ecology and Evolution, 25, 1171891, https://doi.org/10.3389/fevo.2023.1171891, 2023.
Coletti, G., Stainbank, S., Fabbrini, A., Spezzaferri, S., Foubert, A., Kroon, D., and Betzler, C.: Biostratigraphy of large benthic foraminifera from Hole U1468A (Maldives): a CT-scan taxonomic approach, Swiss J. Geosci., 111, 523–536, https://doi.org/10.1007/s00015-018-0306-7, 2018.
Cushman, J. A.: An outline of a reclassification of the Foraminifera, Contributions from the Cushman Laboratory for Foraminiferal Research, 3, 1–105, 1927.
Darling, K. F. and Wade, C. M.: The genetic diversity of planktic foraminifera and the global distribution of ribosomal RNA genotypes, Mar. Micropaleontol., 67, 216–238, https://doi.org/10.1016/j.marmicro.2008.01.009, 2008.
Darling, K. F., Husum, K., and Fenton, I. S.: The biphasic life cycle of the non-spinose planktonic foraminifera is characterised by an aberrant coiling signature, Mar. Micropaleontol., 185, 102295, https://doi.org/10.1016/j.marmicro.2023.102295, 2023.
Duan, B., Li, T., and Pearson, P. N.: Three dimensional analysis of ontogenetic variation in fossil globorotaliiform planktic foraminiferal tests and its implications for ecology, life processes and functional morphology, Mar. Micropaleontol., 165, 101989, https://doi.org/10.1016/j.marmicro.2021.101989, 2021.
Duan, B., Tiegang L., and Pearson, P. N.: Three dimensional analysis of ontogenetic variation in fossil globorotaliiform planktic foraminiferal tests and its implications for ecology, life processes and functional morphology, Mar. Micropaleontol., 165, 101989, https://doi.org/10.1016/j.marmicro.2021.101989, 2021.
Fabbrini, A.: Media 000717827: Neogloboquadrina acostaensis, MorphoSource [sample], https://doi.org/10.17602/M2/M717827, 2025a.
Fabbrini, A.: Media 000717815: Pulleniatina primalis, MorphoSource [sample], https://doi.org/10.17602/M2/M717815, 2025b.
Fabbrini, A.: Media 000717993: Pulleniatina primalis, MorphoSource [sample], https://doi.org/10.17602/M2/M717993, 2025c.
Fabbrini, A.: Media 000718299: Pulleniatina praespectabilis, MorphoSource [sample], https://doi.org/10.17602/M2/M718299, 2025d.
Fabbrini, A.: Media 000718446: Pulleniatina spectabilis, MorphoSource [sample], https://doi.org/10.17602/M2/M718446, 2025e.
Fabbrini, A.: Media 000718749: Pulleniatina praecursor, MorphoSource [sample], https://doi.org/10.17602/M2/M718749, 2025f.
Fabbrini, A.: Media 000718604: Pulleniatina obliquiloculata, MorphoSource [sample], https://doi.org/10.17602/M2/M718604, 2025g.
Fabbrini, A.: Media 000718709: Pulleniatina finalis, MorphoSource [sample], https://doi.org/10.17602/M2/M718709, 2025h.
Fabbrini, A., Greco, M., Iacoviello, F., Kucera, M., Ezard, T. H., and Wade, B. S.: Bridging the extant and fossil record of planktonic foraminifera: implications for the Globigerina lineage, Palaeontology, 66, e12676, https://doi.org/10.1111/pala.12676, 2023.
Fabbrini, A., Pearson, P., Brombacher, A., Iacoviello, F., Ezard, T., and Wade, B.: Morphology of Pulleniatina (planktonic foraminifera): Micro-CT internal volumes, Dryad [data set], https://doi.org/10.5061/dryad.41ns1rnrd, 2025.
Fehrenbacher, J. S., Russell, A. D., Davis, C. V., Gagnon, A. C., Spero, H. J., Cliff, J. B., Zhu, Z., and Martin, P.: Link between light-triggered Mg-banding and chamber formation in the planktic foraminifera Neogloboquadrina dutertrei, Nat. Comm., 8, 15441, https://doi.org/10.1038/ncomms15441, 2017.
Görög, Á., Szinger, B., Tóth, E., and Viszkok, J.: Methodology of the micro-computer tomography on foraminifera, Palaeontol. Electron., 15, 3T, https://doi.org/10.26879/261, 2012.
Hemleben, C., Spindler, M., and Anderson, O. R.: Modern Planktonic Foraminifera, Springer, New York, 363 pp., ISBN 978-1-4612-8150-4, 1989.
Iwasaki, S., Kimoto, K., Okazaki, Y., and Ikehara, M.: Micro-CT scanning of tests of three planktic foraminiferal species to clarify dissolution process and progress, Geochem. Geophys. Geosy., 20, 6051–6065, https://doi.org/10.1029/2019GC008456, 2019.
Jonkers, L., Reynolds, C. E., Richey, J., and Hall, I. R.: Lunar periodicity in the shell flux of planktonic foraminifera in the Gulf of Mexico, Biogeosciences, 12, 3061–3070, https://doi.org/10.5194/bg-12-3061-2015, 2015.
Kennett, J. P. and Srinivasan, M. S.: Neogene Planktonic Foraminifera, a Phylogenetic Atlas, Hutchinson Ross, Stroudsberg, Pennsylvania, 265 pp., ISBN 978-0879330705, 1983.
Kimoto, K. and Tsuchiya, M.: The “unusual” reproduction of planktonic foraminifera: an asexual reproductive phase of Neogloboquadrina pachyderma (Ehrenberg), Anuario do Instituto de Geociencias, Universidade Federal do Rio de Janeiro, 29, p. 461, https://doi.org/10.11137/2006_1_461-461, 2006.
Kunioka, D., Shirai, K., Takahata, N., Sano, Y., Toyofuku, T., and Ujiie, Y.: Microdistribution of
Lastam, J., Griesshaber, E., Yin, X., Rupp, U., Sánchez-Almazo, I., Hess, M., Walther, P., Checa, A., and Schmahl, W. W.: Patterns of crystal organization and calcite twin formation in planktonic, rotaliid, foraminifera shells and spines, J. Struct. Biol., 215, 107898, https://doi.org/10.1016/j.jsb.2022.107898, 2023a.
Lastam, J., Griesshaber, E., Yin, X., Rupp, U., Sánchez-Almazo, I., Heß, M., Walther, P., Checa, A., and Schmahl, W. W.: The unique fibrillar to platy nano-and microstructure of twinned rotaliid foraminiferal shell calcite, Sci. Rep., 13, 2189, https://doi.org/10.1038/s41598-022-25082-9, 2023b.
Leckie, R. M., Wade, B. S., Pearson, P. N., Fraass, A. J., King, D. J., Olsson, R. K., Silva, I. P., Spezzaferri, S., and Berggren, W. A.: Taxonomy, biostratigraphy, and phylogeny of Oligocene and early Miocene Paragloborotalia and Parasubbotina, in: Cushman Foundation of Foraminiferal Research, Atlas of Oligocene Planktonic Foraminifera, edited by: Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T., and Berggren, W. A., Special Publication, No. 46, 125–178, ISBN 9781970168419, 2018.
Meilland, J., Ezat, M. M., Westgård, A., Manno, C., Morard, R., Siccha, M., and Kucera, M.: Rare but persistent asexual reproduction explains the success of planktonic foraminifera in polar oceans, J. Plankton Res., 45, 15–32, https://doi.org/10.1093/plankt/fbac069, 2023.
Morard, R., Darling, K. F., Weiner, A. K., Hassenrück, C., Vanni, C., Cordier, T., Henry, N., Greco, M., Vollmar, N. M., Milivojevic, T., and Rahman, S. N.: The global genetic diversity of planktonic foraminifera reveals the structure of cryptic speciation in plankton, Biol. Rev., 99, 1218–1241, https://doi.org/10.1111/brv.13065, 2024.
Parker, F. L.: A new planktonic species (Foraminiferida) from the Pliocene of Pacific Deep-Sea cores, Contributions from the Cushman Foundation for Foraminiferal Research, 16, 151–153, 1965.
Parker, W. K. and Jones, T. R.: On some Foraminifera from the North Atlantic and Arctic Oceans, including Davis Straits and Baffin's Bay, Philos. T. R. Soc. Lond., 155, 325–441, 1865.
Pearson, P. N. and Penny, L.: Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years, PloS one, 16, e0249113, https://doi.org/10.1371/journal.pone.0249113, 2021.
Pearson, P. N., John, E., Wade, B. S., D'haenens, S., and Lear, C. H.: Spine-like structures in Paleogene muricate planktonic foraminifera, J. Micropalaeontol., 41, 107–127, 2022.
Pearson, P. N., Young, J., King, D. J., and Wade, B. S.: Biochronology and evolution of Pulleniatina (planktonic foraminifera), J. Micropalaeontol., 42, 211–255, https://doi.org/10.5194/jm-42-211-2023, 2023.
Pearson, P. N., Fabbrini, A., and Wade, B. S.: Systematic taxonomy of Pulleniatina, J. Foramin. Res., 55, 245–275, https://doi.org/10.61551/gsjfr.55.3.245, 2025.
Postuma, J. A.: Manual of Planktonic Foraminifera, Elsevier, New York, 420 pp., 1971.
Procter, F. A., Piazolo, S., John, E. H., Walshaw, R., Pearson, P. N., Lear, C. H., and Aze, T.: Electron backscatter diffraction analysis unveils foraminiferal calcite microstructure and processes of diagenetic alteration, Biogeosciences, 21, 1213–1233, https://doi.org/10.5194/bg-21-1213-2024, 2024.
Raffi, I., Wade, B. S., and Pälike, H.: The Neogene Period, edited by: Gradstein, F. M., Ogg, J. G., Schmitz, M. D., and Ogg, G.M., in: Geologic Time Scale 2020, 1141–1215, https://doi.org/10.1016/B978-0-12-824360-2.00029-2, 2020.
Reiss, Z.: The Bilamellidea, nov. superfam. and remarks on Cretaceous globorotaliids, Contrib. Cushman Found. Foram. Res., 8, 127–145, 1957.
Reiss, Z. and Hottinger, L.: The Gulf of Aqaba: Ecological Micropaleontology, Vol. 50, Springer Science & Business Media, 19–32, https://doi.org/10.1007/978-3-642-69787-6, 1984.
Rosenthal, Y., Holbourn, A. E., Kulhanek, D. K., Aiello, I. W., Babila, T. L., Bayon, G., Beaufort, L., Bova, S. C., Chun, J.-H., Dang, H., Drury, A. J., Dunkley Jones, T., Eichler, P. P. B., Fernando, A. G. S., Gibson, K., Hatfield, R. G., Johnson, D. L., Kumagai, Y., Li, T., Linsley, B. K., Meinicke, N., Mountain, G. S., Opdyke, B. N., Pearson, P. N., Poole, C. R., Ravelo, A. C., Sagawa, T., Schmitt, A., Wurtzel, J. B., Xu, J., Yamamoto, M., and Zhang, Y. G.: Site U1488, in: Western Pacific Warm Pool, edited by: Rosenthal, Y., Holbourn, A. E., and Kulhanek, D. K., Proceedings of the International Ocean Discovery Program, 363, https://doi.org/10.14379/iodp.proc.363.109.2018, 2018.
Schiebel, R. and Hemleben, C.: Planktic foraminifers in the Modern Ocean, Berlin, Springer, 358 pp., ISBN 978-3-662-50297-6, 2017.
Schiebel, R., Bijma, J., and Hemleben, C.: Population dynamics of the planktic foraminifer Globigerina bulloides from the eastern North Atlantic, Deep-Sea Res. Pt. I,, 44, 1701–1713, 1997.
Spindler, M., Hemleben, C., Bayer, U., Bé, A. W. H., and Anderson, O. R.: Lunar periodicity of reproduction in the planktonic foraminifer Hastigerina pelagica, Mar. Ecol. Prog. Ser., 1, 61–64, 1979.
Stainforth, R. M., Lamb, J. L., Luterbacher, H., Beard, J. H., and Jeffords, R. M.: Cenozoic Planktonic Foraminiferal Zonation and Characteristics of Index Forms, The University of Kansas Paleontological Contributions, 62, 425 pp., 1975.
Steinhardt, J., de Nooijer, L. L., Brummer, G. J., and Reichart, G. J.: Profiling planktonic foraminiferal crust formation, Geochem. Geophy. Geosy., 16, 2409–2430, 2015.
Subbotina, N. N., Voloshinova, N. A., and Azbel, A. J.: Vvedenie v izuchenie foraminifer (Klassifikaciya melkich foraminifer Mezo-Kaynozoya) [Introduction to the foraminiferal study (Classification of the small Meso-Cenozoic foraminifera)], Leningrad, Nedra, Leningradskoe otdelenie, 212 pp., 1981 (in Russian).
Sverdlove, M. S. and Bé, A. W.: Taxonomic and ecological significance of embryonic and juvenile planktonic foraminifera, J. Foramin. Res., 15, 235–251, https://doi.org/10.2113/gsjfr.15.4.235, 1985.
Takagi, H., Kurasawa, A., and Kimoto, K.: Observation of asexual reproduction with symbiont transmission in planktonic foraminifera, J. Plankton Res., 42, 403–410, https://doi.org/10.1093/plankt/fbaa033, 2020.
Toue, R., Fujita, K., Tsuchiya, M., Chikaraishi, Y., Sasaki, Y., and Ohkouchi, N.: Trophic niche separation of two non-spinose planktonic foraminifers Neogloboquadrina dutertrei and Pulleniatina obliquiloculata, Prog. Earth Planet. Sc., 9, 1–11, https://doi.org/10.1186/s40645-022-00478-3, 2022.
Ujiié, Y. and Ishitani, Y.: Evolution of a planktonic foraminifer during environmental changes in the tropical oceans, PLoS One, 11, e0148847, https://doi.org/10.1371/journal.pone.0148847, 2016.
Short summary
Pulleniatina is a genus of planktonic foraminifera used in biostratigraphy. Here, we illustrate typical specimens of Pulleniatina and the likely ancestor Neogloboquadrina acostaensis from International Ocean Discovery Program Site U1488. We present a novel integration of high-definition light microscopy images, X-ray microcomputed tomography data, and scanning electron microscope images to compare the six Pulleniatina species, supporting an evolutionary model with two diverging lineages.
Pulleniatina is a genus of planktonic foraminifera used in biostratigraphy. Here, we illustrate...
