Cretodus

Cretodus is an extinct genus of mackerel sharks belonging to the proposed family Pseudoscapanorhynchidae.[1] It lived during the Late Cretaceous, approximately 100 to 89 million years ago.[2] The genus is best known from formations formed in the Western Interior Seaway, but is also known from the late Cretaceous of Europe, Africa, and possibly Asia. It is mainly known from isolated teeth and vertebral centra, though a few associated dentitions and spines have been found.[1]

Cretodus
Temporal range: Cenomanian - Coniacian
Cretodus crassidens tooth from the Atco Formation of Texas
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Order:
Lamniformes
Family:
Psuedoscapanorhynchidae
Genus:
Cretodus

Sokolov, 1965
Cretodus simplicatus teeth from Texas, Upper Eagle Ford Group

Species

Shimada & Everhart (2019) attributed the following species to the genus, asserting they were chronospecies belonging to three grades of crown broadness.[1][3]

  • Cretodus longiplicatus
  • Cretodus semiplicatus
  • Cretodus gigantea
  • Cretodus houghtonorum
  • Cretodus crassidens

References
  1. Shimada, Kenshu; Everhart, Michael J. (2019-07-04). "A new large Late Cretaceous lamniform shark from North America, with comments on the taxonomy, paleoecology, and evolution of the genus Cretodus". Journal of Vertebrate Paleontology. 39 (4): e1673399. doi:10.1080/02724634.2019.1673399. ISSN 0272-4634. S2CID 209439997.
  2. "ELASMO.COM Fossil Genera: Cretodus". www.elasmo.com. Retrieved 2020-08-13.
  3. "Gli squali fossili: Serratolamna". squali.com. Retrieved 2015-05-16.
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