original description
Clark, A. H. (1909). A revision of the crinoid families Thalassometridae and Himerometridae. <em>Proc. Biol. Soc. Washington.</em> 22:1-22. [details]
basis of record
Clark, A. H. (1950) A monograph of the existing crinoids. 1(4c). Bulletin of the U.S. National Museum 82:1-383, 32 pls. [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis A genus of Charitometridae with genital pinnules tapering evenly from the usually more or less broadened earlier segments to a delicate tip; portion distal to gonad much longer than gonad; brachitaxes and arm bases rounded aborally with or without fine raised median line or tubercular, granular, lamellar or spinous ornamentation; oral pinnules markedly longer than unusually short genital and distal pinnules. [details]