Articles | Volume 42, issue 2
https://doi.org/10.5194/jm-42-117-2023
© Author(s) 2023. 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-42-117-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Sep 2023
Research article |
| 22 Sep 2023
| 22 Sep 2023
Agglutinated foraminifera from the Turonian–Coniacian boundary interval in Europe – paleoenvironmental remarks and stratigraphy
Richard M. Besen
CORRESPONDING AUTHOR
Department of Earth Sciences, Institute of Geological Sciences,
Freie Universität Berlin, Malteserstraße 74–100, 12249 Berlin,
Germany
Kathleen Schindler
Department of Earth Sciences, Institute of Geological Sciences,
Freie Universität Berlin, Malteserstraße 74–100, 12249 Berlin,
Germany
Andrew S. Gale
School of the Environment, Geography and Geological Sciences,
University of Portsmouth, Burnaby Building, Burnaby Road, Portsmouth PO13QL,
United Kingdom
Earth Science Department, Natural History Museum, Cromwell Road,
London SW75BD, United Kingdom
Ulrich Struck
Department of Earth Sciences, Institute of Geological Sciences,
Freie Universität Berlin, Malteserstraße 74–100, 12249 Berlin,
Germany
Museum für Naturkunde Berlin, Leibniz Institute for Evolution and
Biodiversity Science, Invalidenstraße 43, 10115 Berlin, Germany
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Nariman Mahmoodi, Ulrich Struck, Michael Schneider, and Christoph Merz
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2024-214, https://doi.org/10.5194/hess-2024-214, 2024
Preprint under review for HESS
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Understanding water balance in lakes is complex. We studied Lake Gross Glienicke in Germany, using an innovative method that combines isotope measurements and a hydrological model to improve estimates of water inflow and evaporation. Our findings show a high correlation between the two approaches, leading to better predictions of lake water dynamics. This research offers a reliable way to evaluate the model outputs.
Gabrielle Rodrigues de Faria, David Lazarus, Johan Renaudie, Jessica Stammeier, Volkan Özen, and Ulrich Struck
Clim. Past, 20, 1327–1348, https://doi.org/10.5194/cp-20-1327-2024, https://doi.org/10.5194/cp-20-1327-2024, 2024
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Export productivity is part of the global carbon cycle, influencing the climate system via biological pump. About 34 million years ago, the Earth's climate experienced a climate transition from a greenhouse state to an icehouse state with the onset of ice sheets in Antarctica. Our study shows important productivity events in the Southern Ocean preceding this climatic shift. Our findings strongly indicate that the biological pump potentially played an important role in that past climate change.
Gerhard Franz, Vladimir Khomenko, Peter Lyckberg, Vsevolod Chournousenko, Ulrich Struck, Ulrich Gernert, and Jörg Nissen
Biogeosciences, 20, 1901–1924, https://doi.org/10.5194/bg-20-1901-2023, https://doi.org/10.5194/bg-20-1901-2023, 2023
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This research describes the occurrence of Precambrian fossils, with exceptionally well preserved morphology in 3D. These microfossils reach a size of millimeters (possibly up to centimeters) and thus indicate the presence of multicellular eukaryotes. Many of them are filamentous, but other types were also found. These fossils lived in a depth of several hundred meters and thus provide good evidence of a continental the deep biosphere, from a time generally considered as the
boring billion.
Richard M. Besen, Ulrich Struck, and Ekbert Seibertz
Foss. Rec., 24, 395–441, https://doi.org/10.5194/fr-24-395-2021, https://doi.org/10.5194/fr-24-395-2021, 2021
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The agglutinated foraminiferal fauna in carbonate rocks from the mid-Cretaceous of Lower Saxony is documented and applied to reconstruct former paleoenvironmental conditions. Especially, sea level fluctuations are possible to reconstruct from changes in the foraminiferal record. Differences of the foraminiferal assemblages in different locations, closer or further away from the former coast, are discussed. Described bio-events of the time interval are linked to foraminiferal bio-events.
Dieter Korn, Lucyna Leda, Franziska Heuer, Hemen Moradi Salimi, Elham Farshid, Amir Akbari, Martin Schobben, Abbas Ghaderi, Ulrich Struck, Jana Gliwa, David Ware, and Vachik Hairapetian
Foss. Rec., 24, 171–192, https://doi.org/10.5194/fr-24-171-2021, https://doi.org/10.5194/fr-24-171-2021, 2021
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Permian–Triassic boundary sections at Baghuk Mountain are investigated with respect to their lithological succession, biostratigraphy and chemostratigraphy. Ammonoids enable the clear separation of Wuchiapingian, Changhsingian and Dienerian assemblages. Early Triassic microbialites occur in various horizons. The carbon isotope curve shows a late Changhsingian negative excursion and the lightest values at the base of the Triassic.
Marine Fau, Loïc Villier, Timothy A. M. Ewin, and Andrew S. Gale
Foss. Rec., 23, 141–149, https://doi.org/10.5194/fr-23-141-2020, https://doi.org/10.5194/fr-23-141-2020, 2020
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Forcipulatacea is one of the major clades of extant sea stars with 400 extant species described, but with fewer than 25 fossil species known. Thus, the identification of any new fossil representatives is significant. We reappraise Ophidiaster davidsoni from the Tithonian of Boulogne, France, which was assigned to another major extant group, and reassign it within a new forcipulatacean genus Psammaster gen. nov. A phylogenetic analysis does not place it within any existing forcipulatacean family.
Jana Gliwa, Abbas Ghaderi, Lucyna Leda, Martin Schobben, Sara Tomás, William J. Foster, Marie-Béatrice Forel, Nahideh Ghanizadeh Tabrizi, Stephen E. Grasby, Ulrich Struck, Ali Reza Ashouri, and Dieter Korn
Foss. Rec., 23, 33–69, https://doi.org/10.5194/fr-23-33-2020, https://doi.org/10.5194/fr-23-33-2020, 2020
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The Permian–Triassic boundary section of the Aras Valley (NW Iran) shows a complete sedimentary succession, bearing great potential for studying the change of environmental conditions that paralleled the end-Permian mass extinction. The lithological succession; carbonate microfacies characteristics; stable isotope dynamics; and conodont, ostracod, and ammonoid stratigraphy allow for a detailed study of the chronological succession of the events.
Sudeep Kanungo, Paul R. Bown, Jeremy R. Young, and Andrew S. Gale
J. Micropalaeontol., 37, 231–247, https://doi.org/10.5194/jm-37-231-2018, https://doi.org/10.5194/jm-37-231-2018, 2018
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This paper documents a regional warming event in the Albian of the Anglo-Paris Basin and its palaeoclimatic and palaeoceanographic implications. This multi-proxy study utilizes three independent datasets to confirm the warming event that lasted ~ 500 kyr around the middle–upper Albian boundary. The research involved a field study of the Gault Clay (UK) with an in-depth analysis of nannofossils, bulk sediment carbon and oxygen isotopes, and an investigation of ammonites from the formation.
Sietske J. Batenburg, David De Vleeschouwer, Mario Sprovieri, Frederik J. Hilgen, Andrew S. Gale, Brad S. Singer, Christian Koeberl, Rodolfo Coccioni, Philippe Claeys, and Alessandro Montanari
Clim. Past, 12, 1995–2009, https://doi.org/10.5194/cp-12-1995-2016, https://doi.org/10.5194/cp-12-1995-2016, 2016
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The relative contributions of astronomical forcing and tectonics to ocean anoxia in the Cretaceous are unclear. This study establishes the pacing of Late Cretaceous black cherts and shales. We present a 6-million-year astrochronology from the Furlo and Bottaccione sections in Italy that spans the Cenomanian–Turonian transition and OAE2. Together with a new radioisotopic age for the mid-Cenomanian event, we show that astronomical forcing determined the timing of these carbon cycle perturbations.
Related subject area
Benthic foraminifera
Miocene Climatic Optimum and Middle Miocene Climate Transition: a foraminiferal record from the central Ross Sea, Antarctica
Distribution of two notodendrodid foraminiferal congeners in McMurdo Sound, Antarctica: an example of extreme regional endemism?
Benthic foraminifers in coastal habitats of Ras Mohamed Nature Reserve, southern Sinai, Red Sea, Egypt
Late Miocene to Early Pliocene benthic foraminifera from the Tasman Sea (International Ocean Discovery Program Site U1506)
Triassic and Jurassic possible planktonic foraminifera and the assemblages recovered from the Ogrodzieniec Glauconitic Marls Formation (uppermost Callovian and lowermost Oxfordian, Jurassic) of the Polish Basin
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Meghalayan environmental evolution of the Thapsus coast (Tunisia) as inferred from sedimentological and micropaleontological proxies
Biometry and taxonomy of Adriatic Ammonia species from Bellaria–Igea Marina (Italy)
Biogeographic distribution of three phylotypes (T1, T2 and T6) of Ammonia (foraminifera, Rhizaria) around Great Britain: new insights from combined molecular and morphological recognition
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Latest Oligocene to earliest Pliocene deep-sea benthic foraminifera from Ocean Drilling Program (ODP) Sites 752, 1168 and 1139, southern Indian Ocean
Benthic foraminifera indicate Glacial North Pacific Intermediate Water and reduced primary productivity over Bowers Ridge, Bering Sea, since the Mid-Brunhes Transition
Reconstructing the Christian Malford ecosystem in the Oxford Clay Formation (Callovian, Jurassic) of Wiltshire: exceptional preservation, taphonomy, burial and compaction
Benthic foraminiferal assemblages and test accumulation in coastal microhabitats on San Salvador, Bahamas
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New species of Mesozoic benthic foraminifera from the former British Petroleum micropalaeontology collection
Monitoring benthic foraminiferal dynamics at Bottsand coastal lagoon (western Baltic Sea)
Paleocene orthophragminids from the Lakadong Limestone, Mawmluh Quarry section, Meghalaya (Shillong, NE India): implications for the regional geology and paleobiogeography
Larger foraminifera of the Devil's Den and Blue Hole sinkholes, Florida
Assessing the composition of fragmented agglutinated foraminiferal assemblages in ancient sediments: comparison of counting and area-based methods in Famennian samples (Late Devonian)
Samantha E. Bombard, R. Mark Leckie, Imogen M. Browne, Amelia E. Shevenell, Robert M. McKay, David M. Harwood, and the IODP Expedition 374 Scientists
J. Micropalaeontol., 43, 383–421, https://doi.org/10.5194/jm-43-383-2024, https://doi.org/10.5194/jm-43-383-2024, 2024
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The Ross Sea record of the Miocene Climatic Optimum (~16.9–14.7 Ma) and the Middle Miocene Climate Transition (~14.7–13.8 Ma) can provide critical insights into the Antarctic ocean–cryosphere system during an ancient time of extreme warmth and subsequent cooling. Benthic foraminifera inform us about water masses, currents, and glacial conditions in the Ross Sea, and planktic foram invaders can inform us of when warm waters melted the Antarctic Ice Sheet in the past.
Andrea Habura, Stephen P. Alexander, Steven D. Hanes, Andrew J. Gooday, Jan Pawlowski, and Samuel S. Bowser
J. Micropalaeontol., 43, 337–347, https://doi.org/10.5194/jm-43-337-2024, https://doi.org/10.5194/jm-43-337-2024, 2024
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Ahmed M. BadrElDin and Pamela Hallock
J. Micropalaeontol., 43, 239–267, https://doi.org/10.5194/jm-43-239-2024, https://doi.org/10.5194/jm-43-239-2024, 2024
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The Red Sea hosts exceptionally diverse marine environments despite elevated salinities. Distributions of benthic foraminifers were used to assess the ecological status of coral reef environments in the Ras Mohamed Nature Reserve, south Sinai. Sediment samples collected in mangrove, shallow-lagoon, and coral reef habitats yielded 95 foraminiferal species. Six species, five hosting algal symbionts, made up ~70 % of the specimens examined, indicating water quality suitable for reef accretion.
Maria Elena Gastaldello, Claudia Agnini, and Laia Alegret
J. Micropalaeontol., 43, 1–35, https://doi.org/10.5194/jm-43-1-2024, https://doi.org/10.5194/jm-43-1-2024, 2024
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This paper examines benthic foraminifera, single-celled organisms, at Integrated Ocean Drilling Program Site U1506 in the Tasman Sea from the Late Miocene to the Early Pliocene (between 7.4 to 4.5 million years ago). We described and illustrated the 36 most common species; analysed the past ocean depth of the site; and investigated the environmental conditions at the seafloor during the Biogenic Bloom phenomenon, a global phase of high marine primary productivity.
Malcolm B. Hart, Holger Gebhardt, Eiichi Setoyama, Christopher W. Smart, and Jarosław Tyszka
J. Micropalaeontol., 42, 277–290, https://doi.org/10.5194/jm-42-277-2023, https://doi.org/10.5194/jm-42-277-2023, 2023
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<p>In the 1960s-1970s some species of Triassic foraminifera were described as having a planktic mode of life. This was questioned and Malcolm Hart studied the material in Vienna, taking some to London for SEM imaging. Samples collected from Poland are compared to these images and the suggested planktic mode of life discussed. Foraminifera collected in Ogrodzieniec are glauconitic steinkerns with no test material present and none of the diagnostic features needed to determine "new" species.</p>
Joachim Schönfeld, Nicolaas Glock, Irina Polovodova Asteman, Alexandra-Sophie Roy, Marié Warren, Julia Weissenbach, and Julia Wukovits
J. Micropalaeontol., 42, 171–192, https://doi.org/10.5194/jm-42-171-2023, https://doi.org/10.5194/jm-42-171-2023, 2023
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Benthic organisms show aggregated distributions due to the spatial heterogeneity of niches or food. We analysed the distribution of Globobulimina turgida in the Gullmar Fjord, Sweden, with a data–model approach. The population densities did not show any underlying spatial structure but a random log-normal distribution. A temporal data series from the same site depicted two cohorts of samples with high or low densities, which represent hypoxic or well-ventilated conditions in the fjord.
Mohamed Kamoun, Martin R. Langer, Chahira Zaibi, and Mohamed Ben Youssef
J. Micropalaeontol., 41, 129–147, https://doi.org/10.5194/jm-41-129-2022, https://doi.org/10.5194/jm-41-129-2022, 2022
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Sedimentology and micropaleontology analyses provide the dynamic processes that shaped the environmental evolution of the Thapsus coastline (Tunisia) including its lagoon and Roman harbor. The highlights are paleoenvironmental change records from the coast of Thapsus for the last 4000 years, benthic foraminiferal biota recording the dynamic coastal processes, two transgressive events being recognized, and a presented model for the paleoenvironmental evolution.
Joachim Schönfeld, Valentina Beccari, Sarina Schmidt, and Silvia Spezzaferri
J. Micropalaeontol., 40, 195–223, https://doi.org/10.5194/jm-40-195-2021, https://doi.org/10.5194/jm-40-195-2021, 2021
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Ammonia beccarii was described from Rimini Beach in 1758. This taxon has often been mistaken with other species in the past. Recent studies assessed the biometry of Ammonia species and integrated it with genetic data but relied on a few large and dead specimens only. In a comprehensive approach, we assessed the whole living Ammonia assemblage near the type locality of A. beccarii and identified parameters which are robust and facilitate a secure species identification.
Julien Richirt, Magali Schweizer, Aurélia Mouret, Sophie Quinchard, Salha A. Saad, Vincent M. P. Bouchet, Christopher M. Wade, and Frans J. Jorissen
J. Micropalaeontol., 40, 61–74, https://doi.org/10.5194/jm-40-61-2021, https://doi.org/10.5194/jm-40-61-2021, 2021
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The study presents (1) a validation of a method which was previously published allowing us to recognize different Ammonia phylotypes (T1, T2 and T6) based only on their morphology and (2) a refined biogeographical distribution presented here supporting the putatively invasive character of phylotype T6. Results suggest that phylotype T6 is currently spreading out and supplanting autochthonous phylotypes T1 and T2 along the coastlines of the British Isles and northern France.
Alix G. Cage, Anna J. Pieńkowski, Anne Jennings, Karen Luise Knudsen, and Marit-Solveig Seidenkrantz
J. Micropalaeontol., 40, 37–60, https://doi.org/10.5194/jm-40-37-2021, https://doi.org/10.5194/jm-40-37-2021, 2021
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Morphologically similar benthic foraminifera taxa are difficult to separate, resulting in incorrect identifications, complications understanding species-specific ecological preferences, and flawed reconstructions of past environments. Here we provide descriptions and illustrated guidelines on how to separate some key Arctic–North Atlantic species to circumvent taxonomic confusion, improve understanding of ecological affinities, and work towards more accurate palaeoenvironmental reconstructions.
Matías Reolid
J. Micropalaeontol., 39, 233–258, https://doi.org/10.5194/jm-39-233-2020, https://doi.org/10.5194/jm-39-233-2020, 2020
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During the early Toarcian (Jurassic, 180 Ma) a hyperthermal event, the Jenkyns Event, occurred, affecting the oxygenation of the sea bottom. The integrated study of foraminiferal and ostracod assemblages with geochemical proxies allows us to interpret the incidence of this event in the Western Tethys, more exactly in the South Iberian Palaeomargin. Diminution of diversity, changes in abundance, and opportunist vs. specialist are coincident with the event.
Michael D. Simmons, Vicent Vicedo, İsmail Ö. Yılmaz, İzzet Hoşgör, Oğuz Mülayim, and Bilal Sarı
J. Micropalaeontol., 39, 203–232, https://doi.org/10.5194/jm-39-203-2020, https://doi.org/10.5194/jm-39-203-2020, 2020
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The microfossils from a Cretaceous outcrop in southern Turkey are described and used to interpret the age of the rocks and their depositional setting and how sea level has changed. These results are compared both locally and regionally, identifying broad correspondence with regional sea level events. A new species of microfossil is described, confirming that many microfossils of Arabia are localised in their distribution.
Dana Ridha, Ian Boomer, and Kirsty M. Edgar
J. Micropalaeontol., 38, 189–229, https://doi.org/10.5194/jm-38-189-2019, https://doi.org/10.5194/jm-38-189-2019, 2019
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This paper records the spatial and temporal distribution of deep-sea benthic microfossils (Foraminifera, single-celled organisms) from the latest Oligocene to earliest Pliocene (about 28 to 4 million years ago) from Ocean Drilling Program cores in the southern Indian Ocean. Key taxa are illustrated and their stratigraphic distribution is presented as they respond to a period of marked global climatic changes, with a pronounced warm period in the mid-Miocene followed by subsequent cooling.
Sev Kender, Adeyinka Aturamu, Jan Zalasiewicz, Michael A. Kaminski, and Mark Williams
J. Micropalaeontol., 38, 177–187, https://doi.org/10.5194/jm-38-177-2019, https://doi.org/10.5194/jm-38-177-2019, 2019
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The Mid-Brunhes Transition saw an enigmatic shift towards increased glacial temperature variations about 400 kyr ago. High-latitude Southern Ocean stratification may have been a causal factor, but little is known of the changes to the high-latitude Bering Sea. We generated benthic foraminiferal assemblage data and are the first to document a glacial decrease in episodic primary productivity since the Mid-Brunhes Transition, signifying possible reductions in sea ice summer stratification.
Malcolm B. Hart, Kevin N. Page, Gregory D. Price, and Christopher W. Smart
J. Micropalaeontol., 38, 133–142, https://doi.org/10.5194/jm-38-133-2019, https://doi.org/10.5194/jm-38-133-2019, 2019
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The use of micropalaeontological samples from mudstone successions that have suffered de-watering and compaction means that subtle, lamina-thick, changes in assemblages may be lost when samples are processed that are 1–2 cm thick. As most micropalaeontological samples are often 2–5 cm thick, one must be then cautious of interpretations based on such short-duration changes. This work is part of an integrated study of the Christian Malford lagerstätten that has resulted in a number of papers.
Andrea Fischel, Marit-Solveig Seidenkrantz, and Bent Vad Odgaard
J. Micropalaeontol., 37, 499–518, https://doi.org/10.5194/jm-37-499-2018, https://doi.org/10.5194/jm-37-499-2018, 2018
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Benthic foraminifera often colonize marine underwater vegetation in tropical regions. We studied these so-called epiphytic foraminifera in a shallow bay in the Bahamas. Here the foraminifera differed between types of vegetation, but sedimentological processes seem to be the main controller of the dead foraminifera in the sediment. This indicates that in carbonate platform regions, epiphytic foraminifera should only be used cautiously as direct indicators of past in situ marine vegetation.
Jeroen Groeneveld, Helena L. Filipsson, William E. N. Austin, Kate Darling, David McCarthy, Nadine B. Quintana Krupinski, Clare Bird, and Magali Schweizer
J. Micropalaeontol., 37, 403–429, https://doi.org/10.5194/jm-37-403-2018, https://doi.org/10.5194/jm-37-403-2018, 2018
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Current climate and environmental changes strongly affect shallow marine and coastal areas like the Baltic Sea. The combination of foraminiferal geochemistry and environmental parameters demonstrates that in a highly variable setting like the Baltic Sea, it is possible to separate different environmental impacts on the foraminiferal assemblages and therefore use chemical factors to reconstruct how seawater temperature, salinity, and oxygen varied in the past and may vary in the future.
Lyndsey R. Fox, Stephen Stukins, Tom Hill, and Haydon W. Bailey
J. Micropalaeontol., 37, 395–401, https://doi.org/10.5194/jm-37-395-2018, https://doi.org/10.5194/jm-37-395-2018, 2018
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This paper describes five new Mesozoic deep-water benthic foraminifera from the former British Petroleum microfossil reference collections at the Natural History Museum, London.
Joachim Schönfeld
J. Micropalaeontol., 37, 383–393, https://doi.org/10.5194/jm-37-383-2018, https://doi.org/10.5194/jm-37-383-2018, 2018
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Benthic foraminifera from the Bottsand coastal lagoon, western Baltic Sea, have been monitored annually since 2003 and accompanied by hydrographic measurements since 2012. Elphidium incertum, a stenohaline species of the Baltic deep water fauna, colonised the lagoon in 2016, most likely during a period of salinities > 19 units and average temperatures of 18 °C in early autumn. The high salinities probably triggered their germination from a propagule bank in the lagoonal bottom sediment.
Ercan Özcan, Johannes Pignatti, Christer Pereira, Ali Osman Yücel, Katica Drobne, Filippo Barattolo, and Pratul Kumar Saraswati
J. Micropalaeontol., 37, 357–381, https://doi.org/10.5194/jm-37-357-2018, https://doi.org/10.5194/jm-37-357-2018, 2018
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We carried out a morphometric study of late Paleocene orthophragminids from the Mawmluh Quarry section in the Shillong Plateau, India. We recorded the occurrence of two species of Orbitoclypeus, whereas the other typical Tethyan genera Discocyclina is absent. We also identified the associated benthic foraminifera and algae. Shallow benthic zones (SBZ) 3 and 4 have been recognized in the section. The timing of transition from shallow marine to continental deposition is commented on.
Laura J. Cotton, Wolfgang Eder, and James Floyd
J. Micropalaeontol., 37, 347–356, https://doi.org/10.5194/jm-37-347-2018, https://doi.org/10.5194/jm-37-347-2018, 2018
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Shallow-water carbonate deposits rich in larger benthic foraminifera (LBF) are well-known from the Eocene of the Americas. However, there have been few recent LBF studies in this region. Here we present the LBF ranges from two previously unpublished sections from the Ocala limestone, Florida. The study indicates that the lower member of the Ocala limestone may be Bartonian rather than Priabonian in age, with implications for regional biostratigraphy.
Catherine Girard, Anne-Béatrice Dufour, Anne-Lise Charruault, and Sabrina Renaud
J. Micropalaeontol., 37, 87–95, https://doi.org/10.5194/jm-37-87-2018, https://doi.org/10.5194/jm-37-87-2018, 2018
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This study constitutes an attempt to analyze the variations in foraminiferal assemblages using the morphogroup approach in the Late Devonian. Our results show that both methods of estimating morphotype percentages, the traditional counting and the cumulated area methods, provide similar results, are highly correlated with each other, and provide similar relationships with paleoenvironmental proxies.
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Short summary
Turonian–Coniacian agglutinated foraminiferal assemblages from calcareous deposits from the temperate European shelf realm were studied. Acmes of agglutinated foraminifera correlate between different sections and can be used for paleoenvironmental analysis expressing inter-regional changes. Agglutinated foraminiferal morphogroups display a gradual shift from Turonian oligotrophic environments towards more mesotrophic conditions in the latest Turonian and Coniacian.
Turonian–Coniacian agglutinated foraminiferal assemblages from calcareous deposits from the...
