Alternative spelling: Cyrenacea
Parent taxon: Veneroitei according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Olsson 1931 and Parker 1982
Sister taxa: Arcticoidea, Chamoidea, Gaimardioidea, Glossoidea, Hemidonacoidea, Mactroidea, Ungulinoidea, Veneroidea
Subtaxa: Cyrenidae Cyrenoididae Glauconomidae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Panama (1 collection), Peru (1), the United Kingdom (1), United States (3: Florida)
• Pliocene of United States (1: California)
• Miocene of Israel (1), Switzerland (1)
• Oligocene to Miocene of United States (11: Florida, Georgia)
• Oligocene of Bulgaria (1), Peru (1), Romania (9)
• Eocene of Bulgaria (3), Colombia (1), France (1), Greenland (2), Italy (1), Romania (1), the United Kingdom (42)
• Paleocene of Austria (1), Poland (1)
• Cretaceous of Austria (1), Canada (2: British Columbia), China (1), France (2), Germany (1), Peru (1), Poland (1), Spain (4), the United Kingdom (3), United States (2: Maryland, New Mexico)
• Jurassic of Greenland (1), Tanzania (1), the United Kingdom (1)
• Triassic of Italy (3)
• Ordovician of Estonia (2), Sweden (1)
Total: 111 collections including 135 occurrences