Alternative spelling: Gastrochaenacea
Parent taxon: Gastrochaenidina according to J. G. Carter et al. 2011
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Coan et al. 2000, Nevesskaja 2009, Newell 1965, Rosenberg 2005, Vokes 1980 and Ward and Blackwelder 1987
Sister taxa: none
Subtaxa: Gastrochaenidae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Italy (2 collections), Japan (2), Kenya (1), South Africa (1), United States (9: Florida, Hawaii, South Carolina), Uruguay (1), Yemen (1)
• Pliocene of Belgium (4), Costa Rica (1), Italy (1), Jamaica (3), Japan (1), Papua New Guinea (1), the United Kingdom (3), United States (2: Florida, South Carolina), Venezuela (2)
• Miocene to Pliocene of the Netherlands Antilles (3)
• Miocene of Algeria (1), Austria (2), Bulgaria (2), France (1), Hungary (1), Italy (2), Malta (1), Moldova (10), Panama (2), Poland (4), Trinidad and Tobago (1), United States (6: Florida)
• Oligocene to Miocene of United States (1: Florida)
• Oligocene of France (2)
• Eocene of France (1), Germany (2), Indonesia (1), Italy (1), Namibia (1), Ukraine (1), the United Kingdom (3), United States (12: Alabama, California, Mississippi, North Carolina, South Carolina)
• Paleocene of Belgium (1), France (1), United States (8: Georgia, Maryland, New Jersey, Virginia)
• Cretaceous of Chile (2), Colombia (1), Denmark (1), Egypt (2), France (2), Germany (1), India (1), Italy (2), Mexico (1), Mozambique (1), the Netherlands (1), Switzerland (5), United States (33: Alabama, California, Delaware, Maryland, Mississippi, Missouri, New Jersey, North Carolina, Tennessee, Texas)
• Jurassic of France (2), Germany (2), Poland (2), the United Kingdom (8)
• Permian of Pakistan (1)
Total: 174 collections including 206 occurrences