†family Cyrtocerinidae Flower 1946 (mollusk)
Cephalopoda - Cyrtocerinida - Cyrtocerinidae
Parent taxon: Cyrtocerinida according to B. Kröger and M. Aubrechtova 2017
See also Crick 1981, Stait 1983 and Teichert et al. 1964
Sister taxa: none
Subtaxa: Centrocyrtocerina Cyrtocerina Rummoceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Ordovician of Australia (2 collections), Canada (3: Northwest Territories, Ontario), Estonia (2), United States (25: Illinois, Iowa, Wisconsin, Indiana, Minnesota, Missouri, Ohio, Wisconsin)
Total: 32 collections including 38 occurrences