original description
(of Ptilometrinae AH Clark, 1914) Clark, A. H. (1914). Une étude philosophique de la relation entre les crinoïdes actuels et la temperature de leur habitat. Bulletin Institute Oceanographique Monaco 294:1-11. [details]
basis of record
Clark, A. H. (1947) A monograph of the existing crinoids. 1(4b). <i>Bulletin of the United States National Museum</i> 82:1-473, 43 pls. [details]
additional source
Gislén T (1934) A reconstruction problem: Analysis of fossil comatulids from North America, with a survey of all known types of comatulid arm ramifications. Lunds Universitets Årsskrift (Acta Univ. Lundensis), new series, 30(2):1-59 (Kungl. Fysiografiska Sällskapets Handlingar, n. ser., 45(11):1-59). [details]
From editor or global species database
Diagnosis A family of Tropiometracea with well-developed side and covering ambulacral plates; P1 resembling P2 but is shorter and more slender, with first two segments not noticeably enlarged; radial muscular fossae short and transversely linear; centrodorsal large, columnar; cirrus sockets in 15 or 20 crowded and often irregular columns; cirri with >25 cirrals, most with aboral spine. [details]