Family Squalidae Bonaparte 1834 (dogfish shark)

Chondrichthyes - Squaliformes - Squalidae

Parent taxon: Squaliformes according to B. W. Kent 2018

See also Adnet et al. 2008, Bendix-Almgreen 1983, Biddle 1993, Bigelow 1994, Cassier 1966, Cvancara and Hoganson 1993, Jordan 1963, Kriwet 2003, Long 1992, Purdy et al. 2001 and Underwood 2006

Sister taxa: Centrophoridae, Centropterus, Centrosqualus, Cretascymnus, Dalatiidae, Dalatioidea, Eoetmopterus, Etmopteridae, Gibbechinorhinus, Microetmopterus, Paraechinorhinus, Proetmopterus, Protoxynotus, Pseudoechinorhinus, Scymnorhinidae, Somniosidae, Squalogaleus

Subtaxa: Acanthias Acanthidium Acanthorhinus Atractophorus Centrophoroides Centroscyllium Dalatias Entoxychirus Isistius Lepidorhinus Machephilus Megasqualus Nasisqualus Paracentroscyllium Protosqualus Scymnodon Spinax Squalinae Squalus Trigonognathus Zameus

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Ecology: nektonic carnivore

Distribution:

• Quaternary of the United Kingdom (1 collection)

• Pliocene of Ecuador (2), Japan (1), Mexico (1), United States (2: California, North Carolina)

• MN 13 of Portugal (2)

• Miocene of Argentina (2), Colombia (1), Costa Rica (1), the Czech Republic (2), Denmark (1), France (2), Japan (8), Mexico (1), the Netherlands (3), Panama (3), Portugal (1), Slovakia (2), South Africa (1), United States (7: California, Delaware, Virginia, Washington), Venezuela (1)

• Oligocene of the Czech Republic (1), France (1), Germany (3), Japan (1), the Netherlands (1), United States (1: California)

• Eocene of Antarctica (3), France (1), the United Kingdom (15), United States (1: Virginia), Uzbekistan (1)

• Paleocene of France (1), Morocco (1), New Zealand (3), United States (2: California, New Jersey)

• Cretaceous of Argentina (1), Chile (1), Germany (1), India (1), Israel (1), Japan (1), Lebanon (1), Lithuania (4), New Zealand (1), Sweden (5), United States (14: South Dakota, Texas, Wyoming)

• Triassic of France (2)

Total: 114 collections including 140 occurrences

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