Cephalopoda - Ammonitida - Polyptychitidae
Alternative spelling: Astieriptychites
Parent taxon: Polyptychites according to P. Alsen 2006
See also Bogomolov 1989 and Jeletzky and Kemper 1988
Sister taxa: Polyptychites (Amundiptychites), Polyptychites (Euryptychites), Polyptychites (Paleodichotomites), Polyptychites (Polyptychites), Polyptychites (Primitiviptychites), Polyptychites (Siberiptychites), Polyptychites balkwilli, Polyptychites brancoi, Polyptychites canadensis, Polyptychites clarkei, Polyptychites hapkei, Polyptychites hesperius, Polyptychites hoeli, Polyptychites lamplughi, Polyptychites multicostatus, Polyptychites multiplicatus, Polyptychites oerlinghusanus, Polyptychites orbitatus, Polyptychites pavlowi, Polyptychites saxonicus, Polyptychites sublatissimus, Polyptychites tethyale, Polyptychites traski, Polyptychites trichotomus, Polyptychites villersensis
Subtaxa: Astieriptychites obsoletus Polyptychites (Astieriptychites) astieriformis Polyptychites (Astieriptychites) astieriptychus
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Canada (3: Northwest Territories collections), Greenland (2), the Russian Federation (21)
Total: 26 collections including 28 occurrences