Helicoplacoidea - Helicoplacidae

Full reference: J. W. Durham. 1967. Notes on the Helicoplacoidea and early echinoderms. Journal of Paleontology 41(1):97-102

Parent taxon: Helicoplacidae according to B. C. Wilbur 2006

See also Durham 1967, Durham 1993 and Sepkoski 2002

Sister taxa: Helicoplacus, Waucobella

Subtaxa: Polyplacus kilmeri

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Type: Polyplacus kilmeri

Ecology: stationary epifaunal suspension feeder

Distribution: found only at WP-1, Westgard Pass [Upper Poleta Fm] (Cambrian of California)

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Specimen images are retrieved through the ePANDDA API.