Cephalopoda - Ammonoida - Pericyclidae
Parent taxon: Pericyclidae according to W. M. Furnish et al. 2009
See also Korn 2006
Sister taxa: Ammonellipsitinae, Hammatocyclinae, Helicocyclinae
Subtaxa: Asiacyclus Caenocyclus Goniocycloides Goniocyclus Nodopericyclus Orthocyclus Parahammatocyclus Parasiacyclus Pericyclus Polaricyclus Rhiphaeocyclus
Ecology: fast-moving nektonic carnivore
Distribution:
• Permian of India (1 collection)
• Carboniferous of Algeria (26), Bosnia and Herzegovina (1), France (1), Germany (3), Ireland (1), Morocco (3), the Russian Federation (1), the United Kingdom (1), United States (28: Arkansas, Idaho, Indiana, Kansas, Kentucky, Missouri, Montana, Nevada, New Mexico, Utah), Uzbekistan (5)
Total: 71 collections including 108 occurrences