†subclass Polyplacida Durham 1967
Full reference: J. W. Durham. 1967. Notes on the Helicoplacoidea and early echinoderms. Journal of Paleontology 41(1):97-102
Parent taxon: Helicoplacoidea according to J. W. Durham 1967
See also Durham 1993
Sister taxa: Helicoplacida, Helicoplacidae, Westgardellidae
Subtaxa: none
Ecology: stationary low-level epifaunal suspension feeder
Distribution: there are no occurrences of Polyplacida in the database