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 3rd-5th through 4th-8th genital pinnule segments much broadened; portion distal to expansion abruptly narrower and shorter than expanded portion; ray base profiles making a wide angle with the dorsoventral axis; up to 15 cirrals (usually at most 13); arms <75 mm, rarely >45 mm long. [details]