Bivalvia - Cardiida - Sphaeriidae
Synonym: Corneocycladidae Hannibal 1912
Parent taxon: Sphaerioidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Kosnik 2002, Lamprell and Healy 1998, Parker 1982 and Shoshani et al. 1989
Sister taxa: Kijidae, Sibireconchidae
Subtaxa: Corneocyclas Euglesinae Euperinae Pisidiinae Sphaeriinae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Australia (2 collections), Canada (3: Alberta, Ontario), the Congo-Kinshasa (2), France (2), Germany (2), Greece (1), Kenya (1), Mexico (1), Poland (4), Romania (1), Rwanda (1), the United Kingdom (2), United States (17: Arizona, California, Florida, Kansas, Michigan, Nevada, Ohio, Texas, Virginia)
• Villafranchian of Spain (3)
• Blancan of United States (1: Oregon)
• Pliocene to Pleistocene of the Congo-Kinshasa (4), Italy (1), Spain (6)
• Pliocene of Croatia (1), Indonesia (1), United States (5: California, Oregon)
• Turolian of Greece (1), the Russian Federation (1), Spain (1)
• Hemphillian of United States (1: California)
• Miocene of Austria (3), Bosnia and Herzegovina (5), Brazil (1), Croatia (2), Germany (3), Italy (2), Peru (1), Poland (1), Portugal (2), Türkiye (2)
• Oligocene of Panama (2)
• Eocene of France (1), United States (1: Nevada)
• Paleocene of Canada (5: Alberta, Saskatchewan)
• Cretaceous of Canada (16: Alberta, Saskatchewan), China (4), France (1), Japan (2), United States (7: Montana, North Dakota, South Dakota, Wyoming)
• Jurassic of China (1)
Total: 127 collections including 164 occurrences