Cephalopoda - Pseudorthocerida - Spyroceratidae

Alternative combination: Orthoceras crotalum

Belongs to Spyroceras according to B. Kröger 2008

Sister taxa: Spyroceras cyrtopatronus, Spyroceras damesi, Spyroceras fukuijense, Spyroceras latepatronus, Spyroceras patronus

Ecology: fast-moving nektonic carnivore