Bivalvia - Cardiida - Ungulinidae
Synonym: Diplodontidae Carpenter 1861
Parent taxon: Ungulinoidea according to E. V. Coan and P. Valentich-Scott 2012
See also Beu et al. 1990, Bouchet et al. 2010, Carter et al. 2011, Clark and Arnold 1923, Coan et al. 2000, Dockery 1982, Nevesskaja 2009, Newell 1965, Rosenberg 2005, Todd 2001, Vokes 1980, Ward 1992 and Ward and Blackwelder 1987
Sister taxa: none
Subtaxa: Brachymeris Bruetia Cycladicama Cyclodicama Diplodonta Joannisiella Numella Ungulina
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Angola (1 collection), Australia (3), Belgium (1), Bermuda (1), Cayman Islands (2), Chile (4), Costa Rica (2), Cuba (1), Djibouti (2), the Dominican Republic (2), Ecuador (1), Egypt (2), Eritrea (2), Haiti (1), Jamaica (1), Japan (3), Mayotte (1), Mexico (6), Morocco (2), Mozambique (1), Namibia (3), the Netherlands (1), New Zealand (1), Pakistan (1), Panama (2), Peru (1), South Africa (7), Spain (1), Taiwan (1), Turkey (1), Turks and Caicos Islands (1), the United Kingdom (8), United States (69: Alaska, California, Florida, Louisiana, New Jersey, North Carolina, South Carolina, Virginia), Uruguay (2), Venezuela (2), Yemen (3)
• Pliocene to Pleistocene of Ecuador (1), United States (2: California, Florida)
• Pliocene of Belgium (6), Chile (1), Colombia (1), Costa Rica (1), the Dominican Republic (2), Ecuador (3), Egypt (1), Holy See (Vatican City State) (1), Indonesia (11), Jamaica (4), Japan (6), the Netherlands (1), New Zealand (4), Pakistan (2), Panama (3), the Philippines (1), the Russian Federation (3), the United Kingdom (6), United States (29: Alaska, California, Florida, North Carolina, Oregon, South Carolina, Virginia), Venezuela (4)
• Miocene to Pliocene of Indonesia (1), United States (1: Alaska)
• Miocene of Algeria (7), Argentina (1), Australia (2), Austria (2), Belgium (1), Bulgaria (2), Colombia (7), the Dominican Republic (3), Germany (3), India (4), Indonesia (5), Italy (4), Japan (27), Mexico (1), Morocco (2), New Zealand (1), Pakistan (1), Panama (12), Poland (2), the Russian Federation (20), Saudi Arabia (2), United States (57: Alaska, California, Florida, Maryland, New Jersey, North Carolina, Oregon)
• Oligocene to Miocene of Australia (1), United States (3: Florida)
• Oligocene of Austria (3), Canada (1: British Columbia), France (9), Hungary (2), Japan (7), New Zealand (2), Pakistan (1), Panama (4), the Russian Federation (5), United States (34: Alabama, California, Mississippi, North Carolina, Oregon, Washington)
• Eocene of Belgium (1), Egypt (4), France (1), India (2), Japan (3), Libya (1), New Zealand (4), Pakistan (1), Panama (1), Peru (2), the Russian Federation (1), the United Kingdom (3), United States (127: Alabama, Arkansas, California, Louisiana, Mississippi, Oregon, South Carolina, Texas, Virginia, Washington), Venezuela (1)
• Paleocene of Austria (1), Belgium (2), China (1), Germany (1), New Zealand (1), Nigeria (1), the Russian Federation (1), United States (11: Alabama, California, Maryland, Texas)
• Cretaceous of Hungary (1), Serbia and Montenegro (1), Switzerland (2), United States (12: California, Colorado, North Carolina)
Total: 663 collections including 785 occurrences