Parent taxon: Platycopina according to M. B. Forel 2022
See also Babinot and Colin 2011, Bergue and Govindan 2010, Kozur 1991 and Liebau 2005
Sister taxa: Barychilinoidea, Cavellinacea, Cavellinoidea
Subtaxa: Cytherellidae Cytherelloidea alabamensis Cytherelloidea bastropensis Cytherelloidea btaterensis Cytherelloidea byramensis Cytherelloidea castleberryensis Cytherelloidea chawneri Cytherelloidea danvillensis Cytherelloidea hiwanneensis Cytherelloidea leonensis Cytherelloidea montgomeryensis Cytherelloidea murdercreekensis Cytherelloidea ouachitensis Cytherelloidea rosefieldensis Cytherelloidea smithvillensis Cytherelloidea tombigbeensis Cytherelloidea veatchiana Cytherelloidea vicksburgensis Gotlandellidae Lichviniidae Spinososioellidae
Ecology: epifaunal detritivore-suspension feeder
Distribution:
• Quaternary of India (2 collections), Italy (1), Panama (1), South Pacific (11)
• Pliocene to Pleistocene of South Pacific (1)
• Pliocene of Australia (1), Egypt (1), Panama (1), South Pacific (3), United States (1: North Carolina)
• Miocene to Pliocene of Australia (1), North Atlantic (1)
• Miocene of Colombia (9), Greece (19), India (1), Italy (11), Mexico (1), Panama (1), Puerto Rico (3), South Africa (3), South Pacific (21), Trinidad and Tobago (8), United States (2: Florida), Venezuela (14)
• NN1 of South Pacific (1)
• Oligocene to Miocene of South Pacific (3)
• Oligocene of Antigua and Barbuda (4), Belgium (1), Germany (1), Indian Ocean (1), Mexico (7), Puerto Rico (3), South Pacific (11), United States (9: Alabama, Louisiana, Mississippi, Washington)
• H. alabamensis HOZ of South Pacific (5)
• Eocene to Oligocene of South Pacific (4)
• Eocene of Bangladesh (2), Benin (1), Hungary (2), India (1), Indian Ocean (5), Mexico (1), New Zealand (1), Nigeria (4), Pakistan (7), South Pacific (16), Southern Ocean (4), Togo (3), Tonga (1), Trinidad and Tobago (2), the United Kingdom (2), United States (34: Alabama, California, Louisiana, Mississippi, North Carolina, Texas)
• Paleocene of Argentina (16), Benin (4), Indian Ocean (3), North Atlantic (1), Togo (7), Trinidad and Tobago (12), Tunisia (1), United States (13: Alabama, Louisiana, Missouri, Texas)
• Cretaceous to Paleogene of Argentina (4)
• Cretaceous of Algeria (1), Antarctica (11), Argentina (7), Austria (1), Benin (3), France (3), Gambia (1), Germany (7), Japan (2), Mexico (1), Morocco (23), the Netherlands (2), Poland (2), Portugal (17), Saudi Arabia (1), South Atlantic (1), Tunisia (8), Ukraine (1), United States (17: Alabama, Oklahoma, Texas)
• Jurassic of Algeria (1), France (7), Germany (49), Madagascar (7), Poland (1), Portugal (21), the Russian Federation (8), Saudi Arabia (25), Spain (32), Switzerland (2), Türkiye (1), the United Kingdom (20)
• Triassic of Austria (13), Canada (10: Yukon), China (1), Indian Ocean (1), Iran (2), Israel (4), Italy (3), Türkiye (1)
• Permian of China (5), Oman (1), the United Kingdom (1)
• Carboniferous of United States (4: Colorado, Indiana, Kentucky)
• Devonian of France (3), Germany (1), the Russian Federation (4), Türkiye (1), Ukraine (1), United States (12: Alaska, Michigan, New York, Ohio)
• Silurian of Germany (1), the Russian Federation (1), the United Kingdom (4)
• Ordovician of United States (1: Minnesota)
Total: 673 collections including 964 occurrences