Cretolamna catoxodon
Siverson, Lindgren, Newbrey, Cederström & Cook, 2015
Classification: Elasmobranchii Lamniformes Otodontidae
Reference of the original description
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type. Acta Palaeontologica Polonica, 60(2), 339–384
Types
Cretolamna catoxodon
Cretolamna catoxodon
Description:
Citation: Cretolamna catoxodon Siverson, Lindgren, Newbrey, Cederström & Cook, 2015: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
Description
Original diagnosis after Siverson, Lindgren, Newbrey, Cederström & Cook, 2015 [22014]: Anterior teeth equipped with slender cusp; straight, very slightly curved or moderately distally inclined. Outer margin of cusplets more-or-less vertical on upper anterior teeth. Root symmetrical in labial/lingual views on first upper and lower anterior teeth but asymmetrical in basal view with one lobe more compressed than the other. Lingual protuberance of root poorly demarcated in basal view in upper anterior teeth but highly protruding in profile view, overhanging the neck. Most upper lateroposterior teeth equipped with rounded cusplets, lacking distinct apex.
Original diagnosis after Siverson, Lindgren, Newbrey, Cederström & Cook, 2015 [22014]: Anterior teeth equipped with slender cusp; straight, very slightly curved or moderately distally inclined. Outer margin of cusplets more-or-less vertical on upper anterior teeth. Root symmetrical in labial/lingual views on first upper and lower anterior teeth but asymmetrical in basal view with one lobe more compressed than the other. Lingual protuberance of root poorly demarcated in basal view in upper anterior teeth but highly protruding in profile view, overhanging the neck. Most upper lateroposterior teeth equipped with rounded cusplets, lacking distinct apex.
References
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
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
