WoRMS taxon details

Neogymnocrinus Hess, 2006

714678  (urn:lsid:marinespecies.org:taxname:714678)

accepted
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marine, brackish, fresh, terrestrial
recent only
Hess H (2006) Crinoids from the Lower Jurassic (Pliensbachian) of Arzo, southern Switzerland. <i>Schweizerische paläontologische Abhandlungen</i> 126:143 p., 29 fig., 29 pl. [details]   
WoRMS (2024). Neogymnocrinus Hess, 2006. Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=714678 on 2024-04-12
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2013-01-04 19:58:01Z
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original description Hess H (2006) Crinoids from the Lower Jurassic (Pliensbachian) of Arzo, southern Switzerland. <i>Schweizerische paläontologische Abhandlungen</i> 126:143 p., 29 fig., 29 pl. [details]   

basis of record Hess H. (2011). Cyrtocrinida. <em>In: Hess H, Messing CG, Ausich WI (Eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea, vol. 3. University of Kansas Press, Lawrence, Kansas.</em> 180–206. [details]   
From editor or global species database
Diagnosis Sclerocrinidae with cup asymmetric, formed mostly by first primibrachials with closely fitting extensions that seal adoral side of the cup. Radials rudimentary or fused with proximal columnal. Crown strongly asymmetric, with some arms much shorter than others; branching and number of arms highly variable; primibrachial 1 or 2 axillary; further branching may occur to the quartibrachial 13, and first brachials of 3 consecutive brachitaxes may all be axillary. Primibrachial 1 and secundibrachial 1 united orally, enclosing radial furrow; arms may curl inward to form a compact fist. Brachials asymmetrical, more or less cuneate in aboral view, thicker part with pinnule socket and thinner part developed into winglike extension, coiled pinnules fitting into depression on the extension of the neighboring brachial; all brachial articulations muscular. Column composed of a granular or smooth proximal columnal of variable length, and a smooth, much shorter distal columnal attached to the substrate by a slightly expanded base.  [details]