Cephalopoda - Ammonitida - Holcodiscidae
Parent taxon: Perisphinctaceae according to P. F. Rawson and M. B. Aguirre-Urreta 2012
See also Aguirre-Urreta and Rawson 2003, Klein 2005, Reboulet 1996, Vasicek 2002 and Wright 1952
Sister taxa: Isterites, Oosterellidae, Platylenticeratidae, Polyptychitidae
Subtaxa: Almohadites Astieridiscus Gymnoplites Holcodiscus Jeanthieuloyites Jeanthieuolyites Metahoplites Parasaynoceras Pseudovaldedorsella Spitidiscinae Taveraidiscus
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Argentina (57 collections), Austria (4), Bulgaria (1), Chile (4), Colombia (5), the Czech Republic (3), France (74), Georgia (1), Hungary (13), India (1), Italy (18), Mexico (1), Morocco (9), Portugal (3), Romania (1), Slovakia (4), Spain (70), Tunisia (9), United States (2: Oregon)
• Jurassic to Cretaceous of Spain (1)
Total: 281 collections including 371 occurrences