Cretalamna gertericorum

Siverson, Lindgren, Newbrey, Cederström & Cook, 2015


Classification: Elasmobranchii Lamniformes Otodontidae

Reference of the original description
Siversson, M. & Lindgren, J. & Newbrey, M.G. & Cederström, P. & Cook, T.D. (2015)
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384

Synonyms / new combinations and misspellings
Cretolamna gertericorum

Types
Cretalamna gertericorum
Holotype: UM: BET 5; Paratype: UM: BET 4; WAM(fossil): 13.5.8–12;


Description:


Citation: Cretalamna gertericorum Siverson, Lindgren, Newbrey, Cederström & Cook, 2015: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026

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Description
Original diagnosis after Siverson, Lindgren, Newbrey, Cederström & Cook, 2015 [22014]: Anterior teeth with slender, elongated cusps. Basal view of root triangular in upper and lower anterior teeth. Upper lateroposterior teeth from posterior half of inferred lateroposterior hollow with concave labial profile and broad, strongly distally curved cusp in labial/lingual views. Cusplets relatively upright in lateroposterior teeth but divergent in anterior teeth. Median indentation of basal edge of root small and tightly curved in lateroposterior teeth.

Remarks
shark-references Species-ID=14221;

References
Tanaka, T. & Kohno, N. (2025)
Paleozoic, Mesozoic and Cenozoic Chondrichthyes from the Japanese Islands. National Museum of Nature and Science Monographs, 56, 1–184
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
DOI: 10.1126/science.abn2080
Condamine, F.L. & Romieu, J. & Guinot, G. (2019)
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116
Siversson, M. & Lindgren, J. & Newbrey, M.G. & Cederström, P. & Cook, T.D. (2015)
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
DOI: 10.4202/app.2012.0137