†family Hemipneustidae Lambert 1917 (sea urchin)
Echinoidea - Holasteroida - Hemipneustidae
Full reference: J. Lambert. 1917. Note sur quelques Holasteridae. Bulletin de la Société des Sciences Historiques et Naturelles de l’Yonne 70:191-223
Parent taxon: Holasteroida according to A. Kroh and A. B. Smith 2010
Sister taxa: Calymnidae, Coraster, Corechinus, Coryslus, Eoholaster, Menuthiaster, Meridosternata, Nordenskjoeldaster, Physaster, Pomaster, Pseudholaster, Pseudholasteridae, Smithiaster, Stenonasteridae, Turanglaster
Subtaxa: none
Ecology: semi-infaunal detritivore
Distribution: there are no occurrences of Hemipneustidae in the database