Chondrichthyes - Squaliformes - Dalatiidae
Synonym: Scymnorhinidae
Parent taxon: Squaliformes according to I. Feichtinger et al. 2024
See also Adnet et al. 2008, Adnet et al. 2006, Cahuzac et al. 2007, Cassier 1966, Jordan 1963, Maisch IV et al. 2025, Nelson et al. 2016, Popov et al. 2025, Straube et al. 2015, Sykes 1971, Underwood and Schlogl 2013, Villafaña et al. 2020 and Welton 2016
Sister taxa: Centrophoridae, Centropterus, Dalatioidea, Eoscymnidae, Etmopteridae, Fredipristis, Oxynotidae, Paraechinorhinus, Somniosidae, Squalidae, Squalogaleus
Subtaxa: Acrosqualiolus Angoumeius Dalatias Eosqualiolus Euprotomicroides Euprotomicrus Hessinodon Isistius Oligodalatias Squaliodalatias Squaliolus Squaliomicrus
Type: Dalatias
Ecology: nektonic carnivore
Distribution:
• Mangapanian of New Zealand (3 collections)
• Blancan of Mexico (1)
• Pliocene of Belgium (1), Ecuador (2), Italy (1), Japan (2), New Zealand (1), United States (2: California, North Carolina)
• Miocene to Pliocene of Costa Rica (1), Ecuador (1), Japan (1), United States (1: Florida)
• Miocene of Colombia (2), Costa Rica (1), France (13), Germany (2), Hungary (1), Jamaica (1), Japan (7), New Zealand (2), Panama (3), Portugal (1), Slovakia (9), South Korea (2), Spain (1)
• Waitakian of New Zealand (2)
• Oligocene of New Zealand (1), United States (4: California, Oregon)
• Eocene of Antarctica (1), Barbados (5), Belgium (4), France (10), the Netherlands (25), New Zealand (1), the Russian Federation (3), Ukraine (3), the United Kingdom (8), United States (1: Virginia), Uzbekistan (1)
• Paleocene of Austria (1), Bulgaria (1), Denmark (1), New Zealand (1), United States (1: California)
• Cretaceous of Canada (2: British Columbia), Lithuania (1)
Total: 139 collections including 189 occurrences