†family Polyptychitidae Wedekind 1918 (ammonite)
Cephalopoda - Ammonitida - Polyptychitidae
Parent taxon: Perisphinctaceae according to A. Lukeneder 2004
See also Alsen 2006, Bogomolov 1989 and Wright et al. 1996
Sister taxa: Holcodiscidae, Isterites, Oosterellidae, Platylenticeratidae
Subtaxa: Polyptychitinae Siberites Simbirskitinae
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Australia (2 collections), Austria (1), Canada (42: British Columbia, Northwest Territories, Yukon), France (1), Georgia (1), Germany (1), Greenland (27), Mexico (2), Poland (16), the Russian Federation (73), Svalbard and Jan Mayen (9), the United Kingdom (1), United States (29: Alaska, California, Oregon)
Total: 205 collections including 368 occurrences