New Reports on the levels of Chondrichthyan diversity during the Early Paleocene

[Joseph Fossil]

I've recently been researching the number of Chondrichthyan genera that survived the Cretaceous-Paleocene Mass Extinction event 66 Million Years ago and found some papers that have helped a lot.

 

 

Artist Reconstruction of the Chondrichthyan diversity during the Late Cretaceous 66 Million Years ago. 

Image Credit: Jorge Gonzalez, 2023.

https://web.archive.org/web/20230517102817/https://www.umontpellier.fr/web/20230517102817/https://www.umontpellier.fr/en/articles/les-raies-et-les-requins-durement-frappes-par-la-derniere-extinction-de-masse-il-y-a-66-millions-dannees

 

 

The event wiped out the non-avian dinosaurs and around 50-75% of all life on Earth. These papers, most have been only recently published, have helped me greatly understand the number of shark and ray genera that survived the event and Chondrichthyan diversity levels during the Danian stage of the Early Paleocene. I know these papers also will greatly help others researching this topic as well.

 

Feichtinger, I., Pollerspoeck, J., Harzhauser, M., Auer, G., Coric, S., Kranner, M., Beaury, B., & Guinot, G. (2024). Earliest Danian outer neritic elasmobranch assemblages reveal an environmentally controlled faunal turnover at the Cretaceous-Palaeogene boundary in the northern Tethyan Realm (Austria). Papers in Palaeontology. 10. https://doi.org/10.1002/spp2.1547. 

https://www.researchgate.net/publication/377840995_Earliest_Danian_outer_neritic_elasmobranch_assemblages_reveal_an_environmentally_controlled_faunal_turnover_at_the_Cretaceous-Palaeogene_boundary_in_the_northern_Tethyan_Realm_Austria

 

Kriwet, J., & Benton, M. (2004). Neoselachian (Chondrichthyes, Elasmobranchii) diversity across the Cretaceous–Tertiary boundary. Palaeogeography, Palaeoclimatology, Palaeoecology. 214(3). 181-194. https://doi.org/10.1016/j.palaeo.2004.02.049. 
https://www.researchgate.net/publication/222410499_Neoselachian_Chondrichthyes_Elasmobranchii_diversity_across_the_Cretaceous-Tertiary_boundary

 

Guinot, G., & Condamine, F. L. (2023). Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science. 379, 802-806. https://doi.org/10.1126/science.abn2080.

https://web.archive.org/web/20230517102817/https://www.umontpellier.fr/web/20230517102817/https://www.umontpellier.fr/en/articles/les-raies-et-les-requins-durement-frappes-par-la-derniere-extinction-de-masse-il-y-a-66-millions-dannees

 

Adolfssen, J., & Ward, D. (2013). Neoselachians from the Danian (Early Paleocene) of Denmark. Acta Palaeontologica Polonica. 60. https://doi.org/10.4202/app.2012.0123. 

https://www.app.pan.pl/archive/published/app60/app20120123.pdf

 

Cañete-Cañete, N., Villafaña, J. A., Farias, L., Gayo, E. M., Rivadeneira, M. M. (2024). The Fossil Record of Chondrichthyans from the Cretaceous-Eocene in Chile: Diversity and Paleobiogeographic Implications. SSRN. Available at SSRN: https://ssrn.com/abstract=4873311 or http://dx.doi.org/10.2139/ssrn.4873311.

 

 

 

I hope you all found this helpful!!!

[Notidanodon]

very interesting!