Chondrichthyes - Synechodontiformes
Full reference: C. J. Duffin and D. J. Ward. 1993. The Early Jurassic Palaeospinacid sharks of Lyme Regis, southern England. Belgian Geological Survey, Professional Papers, Elasmobranches et Stratigraphie 264:53-102
Parent taxon: Neoselachii according to S. Stumpf and J. Kriwet 2019
See also Delsate 2003, Delsate et al. 2002, Duffin 1998, Duffin and Ward 1993, Ginter et al. 2010, Johns 1997, Nelson et al. 2016, Rees 2000, Underwood 2006, Underwood et al. 1999, Underwood and Ward 2004 and Yamagishi 2004
Sister taxa: Agaleidae, Anachronistidae, Batoidea, Batomorphii, Dalatiiformes, Duffinselache, Galea, Galeomorphii, Grozonodon, Hopleacanthus, Mcmurdodontidae, Nanocetorhinus, Odontorhytis, Ostenoselachidae, Palaeocarcharidae, Rhomaleodus, Selachii, Squalea, Squalomorphii, Squatinomorphii, Vallisodus
Subtaxa: Keichouodus Mucrovenator Orthacodontidae Palaeospinacidae Paraorthacodontidae Parascylloides Polyfaciodus Rhomphaiodon Safrodus
Ecology: nektonic carnivore
Distribution:
• Eocene of Antarctica (1 collection), Barbados (1), Canada (1: British Columbia), Chile (1), United States (2: Alabama, California)
• Paleocene of France (1), New Zealand (4), the Russian Federation (1), United States (2: Maryland)
• Cretaceous of Algeria (1), Antarctica (1), Australia (1), Austria (1), Canada (3: Alberta, British Columbia), Chile (1), France (7), Germany (1), India (1), Israel (2), Japan (14), Kazakhstan (1), Lithuania (9), New Zealand (1), Poland (3), the Russian Federation (5), Spain (1), Sweden (17), Ukraine (6), the United Kingdom (53), United States (20: Montana, New Jersey, New Mexico, North Dakota, South Dakota, Wyoming)
• Jurassic to Cretaceous of France (2)
• Jurassic of Belgium (4), Denmark (1), France (12), Germany (19), Luxembourg (6), Poland (5), Spain (6), Sweden (1), Tanzania (1), the United Kingdom (8)
• Triassic of Belgium (6), Bulgaria (1), Canada (33: British Columbia), China (10), France (18), Germany (7), Japan (23), Luxembourg (2), the Netherlands (2), Oman (10), Poland (3), the Russian Federation (3), Svalbard and Jan Mayen (1), Turkey (1), the United Kingdom (22), United States (3: Idaho, Nevada)
• Permian of Oman (1), the Russian Federation (2)
Total: 376 collections including 525 occurrences