Clade Malacostega Levinsen 1902
Parent taxon: Anasca according to R. S. Bassler 1953
See also Schmidt 2003
Sister taxa: Bicellariellidae, Cellularina, Coilostega, Cribrimorpha, Farciminariidae, Inovicellata, Opesiulidae, Pseudostega, Pyriporopsis, Scrupariina, Scrupocellariidae
Subtaxa: Hincksinidae
Distribution:
• Quaternary of United States (3: California, Florida, Maryland collections)
• Miocene to Oligocene of Australia (3)
• Miocene of Indonesia (3)
• Oligocene to Miocene of Australia (2)
• Eocene of Colombia (1), United States (1: Mississippi)
• Paleocene of Austria (1)
Total: 14 collections including 15 occurrences