Holopodidae with entire animal reduced to a convex cap or rounded cone of variable height. First primibrachial (and ... [details]
Articulata with cup with or without proximale or distinct basals that may be hidden; cup may be elongated and ... [details]
Holopodina with cup thick walled, with 5 radials separated by distinct sutures; one radial commonly considerably ... [details]
Holopodina with Cup composed of fused radials attached by slightly extended base to substrate without articulation ... [details]
Cyrtocrinida with cup with radials and base (so-called dorsal element) attached directly to substrate. Generally no ... [details]
Holopodidae with cup tubular, more or less irregular, commonly with radial ridges or rows of tubercles. Upper edge ... [details]
Sclerocrinidae with cup asymmetric, formed mostly by first primibrachials with closely fitting extensions that seal ... [details]
Same as genus. [details]
Eudesicrinidae with cup compact, with deep radial cavity, lower portion a fused cylinder (perhaps basals, or basals ... [details]
Cyrtocrinina with cup compact, commonly asymmetrical, highly variable and typically more or less oblique and ... [details]