†family Hemicosmitidae Jaekel 1918
Rhombifera - Hemicosmitoida - Hemicosmitidae
Parent taxon: Hemicosmitida according to J. F. Bockelie 1979
See also Beaver et al. 1967 and Regnéll 1945
Sister taxa: Caryocrinitidae, Heterocystitidae
Subtaxa: Corylocrinus Hemicosmites Tricosmites
Ecology: stationary epifaunal suspension feeder
Distribution: