†family Nucleocrinidae Bather 1899 (blastoid)
Blastoidea - Nucleocrinida - Nucleocrinidae
Parent taxon: Nucleocrinida according to J.A. Waters and A.S. Horowitz 1993
See also Beaver et al. 1967
Sister taxa: none
Subtaxa: Elaeacrinus Nucleocrinus Placoblastus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution: