The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution

de Baets K, Nätscher P, Rita P, Fara E, Neige P, Bardin J, Dera G, Duarte LV, Hughes Z, Laschinger P, Carlos Garcia-Ramos J, Pinuela L, Übelacker C, Weis R (2021)

Publication Type: Journal article, Original article

Publication year: 2021

Journal

Original Authors: Kenneth De Baets, Paulina S. Nätscher, Patricia Rita, Emmanuel Fara, Pascal Neige, Jérémie Bardin, Guillaume Dera, Luís Vítor Duarte, Zoe Hughes, Peter Laschinger, José Carlos García-Ramos, Laura Piñuela, Christof Übelacker, Robert Weis

Book Volume: 140

Article Number: 25

Issue: 1

DOI: 10.1186/s13358-021-00242-y

Abstract

The second-order Pliensbachian–Toarcian crisis affected major groups of marine organisms. While its impact has been intensively studied for ammonites, the response of belemnites is only currently emerging through quantitative studies. Novel overall and regional diversity analyses suggest that belemnite richness in the NW-Tethys drops at the Pliensbachian–Toarcian boundary, while overall diversity slightly increases in NW-Tethys assemblages during the Toarcian Oceanic Anoxic event (T-OAE), mostly driven by NW European assemblages (e.g., Yorkshire). The T-OAE coincides with marked taxonomic turnover within individual basins, which is associated with an increase in median rostrum size of specimens in taxa at most localities. The changes in median body size across the Pliensbachian–Toarcian boundary are less consistent and driven by changes in body size within individual lineages crossing the boundary. However, our analyses also illustrate differences in sampling across the Pliensbachian–Toarcian crisis, which needs to be considered in further studies.

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Involved external institutions

Universidade de Coimbra Portugal (PT) Museo del Jurásico de Asturias Spain (ES) Nationalmuseum für Naturgeschichte / Musée national d’histoire naturelle Luxembourg (LU) Université Toulouse III - Paul Sabatier France (FR) Université Bourgogne Franche-Comté France (FR) Sorbonne Université France (FR) Natural History Museum London United Kingdom (GB)

How to cite

APA:

de Baets, K., Nätscher, P., Rita, P., Fara, E., Neige, P., Bardin, J.,... Weis, R. (2021). The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution. Swiss Journal of Palaeontology, 140. https://doi.org/10.1186/s13358-021-00242-y

MLA:

de Baets, Kenneth, et al. "The impact of the Pliensbachian–Toarcian crisis on belemnite assemblages and size distribution." Swiss Journal of Palaeontology 140 (2021).

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