†superfamily Hemicosmitoida Jaekel 1918
Alternative spelling: Hemicosmitida
Parent taxon: Rhombifera according to C. R. C. Paul et al. 2019
See also Beaver et al. 1967 and Regnéll 1945
Sister taxa: none
Subtaxa: Caryocrinitidae Hemicosmitidae Heterocystitidae
Type: Hemicosmitidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Niagaran of United States (2: Indiana, Ohio collections)
• Silurian of Canada (8: Ontario, Québec), United States (47: Arkansas, Illinois, Indiana, Iowa, Missouri, New York, Oklahoma, Tennessee, Wisconsin)
• Arenig of China (3)
• Dawan of China (2)
• Ordovician of Algeria (1), Belgium (1), Estonia (19), Norway (7), Portugal (2), Spain (4), Sweden (4), Thailand (1), the United Kingdom (7)
Total: 108 collections including 131 occurrences