Cretodus
''Cretodus'' is an extinct genus of large mackerel sharks belonging to the proposed family Pseudoscapanorhynchidae. ''Cretodus'' lived during the Late Cretaceous, ranging from the CenomanianCicimurri, D. J. (2001). "Fossil selachians from the Belle Fourche Shale (Cretaceous, Cenomanian), Black Hills region of South Dakota and Wyoming." ''Mountain Geologist,'' 38:181-192. to the ConiacianHamm S.A. & Cicimurri D. J. (2011). "Early Coniacian (Late Cretaceous) selachian fauna from the basal Atco Formation, lower Austin Group, north central Texas." ''Paludicola'', 8(3): 107-127. (approximately 100 to 89 million years ago). The genus is well-known from strata deposited in the Western Interior Seaway (North America), and from the Late Cretaceous of Europe, Africa, and possibly Asia. ''Cretodus'' is primarily represented in the fossil record by isolated teeth and vertebral centra, though a couple of associated dentitions and vertebral columns have been found. Description Prior to 2017, ...
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Pseudoscapanorhynchidae
Pseudoscapanorhynchidae is a family of extinct mackerel sharks that lived during the Cretaceous and potentially the Paleogene. It currently includes '' Cretodus'', ''Eoptolamna'', '' Leptostyrax'', ''Protolamna'', ''Pseudoscapanorhynchus'', and possibly ''Lilamna ''Lilamna'' is an extinct genus of mackerel sharks from the Wulagen Formation of the Tarim Basin, China. It was originally named ''Archaeolamna apophysata'', but that generic name was preoccupied by '' Archaeolamna kopingensis''. ''Lilamna'' was ...''. References {{Taxonbar, from=Q108853709 Lamniformes Prehistoric cartilaginous fish families ...
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