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Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: evidence from a new genus and species, Grimmenodon au...

by Stumpf, Sebastian, Ansorge, Jörg, Pfaff, Cathrin, Kriwet, Jürgen
Published in Journal of Vertebrate Paleontology (2017)
“...-brackish lower Toarcian (Harpoceras exaratum ammonite subzone) clay deposits of Grimmen in northeastern...”

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Recognition of a likely two phased extinction at the K-Pg boundary in Antarctica

by Tobin, Thomas S.
Published in Scientific Reports (2017)
“... consequence the ammonite fossil record is commonly used to test statistical methods of evaluating mass...”

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Severity of ocean acidification following the end-Cretaceous asteroid impact

by Tyrrell, Toby, Merico, Agostino, Armstrong McKay, David Ian
Published in Proceedings of the National Academy of Sciences (2015)
“...Ammonites went extinct at the time of the end-Cretaceous asteroid impact, as did more than 90...”

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Early evolution of the angiosperm clade Asteraceae in the Cretaceous of Antarctica

by Barreda, Viviana D., Palazzesi, Luis, Tellería, Maria C., Olivero, Eduardo B., Raine, J. Ian, Forest, Félix
Published in Proceedings of the National Academy of Sciences (2015)
“... in Antarctic deposits for more than 65 million years along with other extinct groups (e.g. Dinosaurs, Ammonites...”

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End-Cretaceous marine mass extinction not caused by productivity collapse

by Alegret, Laia, Thomas, Ellen, Lohmann, Kyger C
Published in Proceedings of the National Academy of Sciences (2012)
“... been the main cause of extinction of calcifying plankton and ammonites, and recovery of productivity...”

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