Articles | Volume 41, issue 1
J. Micropalaeontol., 41, 75–105, 2022
https://doi.org/10.5194/jm-41-75-2022
J. Micropalaeontol., 41, 75–105, 2022
https://doi.org/10.5194/jm-41-75-2022
Research article
26 Apr 2022
Research article | 26 Apr 2022

Lower Jurassic calcareous nannofossil taxonomy revisited according to the Neuquén Basin (Argentina) record

Micaela Chaumeil Rodríguez et al.

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Cited articles

Aguado, R., O'Dogherty, L., and Sandoval, J.: Fertility changes in surface waters during the Aalenian (mid-Jurassic) of the Western Tethys as revealed by calcareous nannofossils and carbon–cycle perturbations, Mar. Micropaleontol., 68, 268–285, https://doi.org/10.1016/j.marmicro.2008.06.001, 2008. 
Al-Suwaidi, A. H., Angelozzi, G. N., Baudin, F., Damborenea, S. E., Hesselbo, S. P., Jenkyns, H. C., Manceñido, M. O., and Riccardi, A. C.: First record of the Early Toarcian Oceanic Anoxic Event from the Southern Hemisphere, Neuquén Basin, Argenina, J. Geol. Soc. Lond., 167, 633–636, https://doi.org/10.1144/0016-76492010-025, 2010. 
Al-Suwaidi, A. H., Hesselbo, S. P., Damborenea, S. E., Manceñido, M. O., Jenkyns, H. C., Riccardi, A. C., Angelozzi, G. N., and Baudin, F.: The Toarcian Oceanic Anoxic Event (Early Jurassic) in the Neuquén Basin, Argentina: a reassessment of age and carbon–isotope stratigraphy, J. Geol., 124, 171–193, https://doi.org/10.1086/684831, 2016. 
Angelozzi, G. N.: Nanofósiles toarcianos de la Formación Los Molles del perfil Picún–Leufú, Cuenca del Neuquén, República Argentina, 4 Congreso Argentino de Paleontologia y Bioestratigrafía, Mendoza, 1986, Actas, 3, 137–144, 1988. 
Angelozzi, G. N. and Pérez Panera, J. P.: Nanofósiles calcáreos del límite Pliensbachiano/Toarciano en la Cuenca Neuquina, Argentina, 5 Simposio Argentino del Jurásico, Trelew, 2013, Abstract, 7, 2013. 
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Short summary
We present a deep systematic and taxonomic revision of the Early Jurassic calcareous nannofossils from the Neuquén Basin. The study focuses on characterizing the assemblages and identifying bioevents. The Pliensbachian associations from the Los Molles Formation are ilustrated for the first time, along with new biostratigraphic data from the area. Similarities found with locaties from the proto-Atlantic region suggest a connection between the Pacific and Tethys oceans during the Early Jurassic.