A revision of the comatulid genus Stephanometra AH Clark with a rediagnosis of the genus Lamprometra AH Clark (Echinodermata: Crinoidea) Author Rankin, Dana L. Author Messing, Charles G. text Zootaxa 2008 1888 1 35 journal article 10.5281/zenodo.184295 6202d01a-26eb-4e35-b367-5598c060def7 1175-5326 184295 Lamprometra AH Clark, 1913 Comatula (part) Leuckart, 1833 :387 . Alecto (part) Müller, 1841 :185 . Comatula ( Alecto ) (part): Müller, 1847 :261 . Antedon (part) Lütken, 1874:190 (in Carpenter, 1879 ). Actinometra (part) Carpenter, 1888 :60 . Himerometra (part) AH Clark, 1907 :356 . Dichrometra (part) AH Clark, 1909a :13 . Lamprometra AH Clark, 1913a :142 –143.— Gislén, 1922 :76 ; 1924:150.—AH Clark, 1941 :472 –537.— Utinomi & Kogo, 1965 :274 –276.—AM Clark & Rowe, 1971 .—AM Clark, 1972 .— Zmarzly, 1985 :352 .— Chen et al. , 1988 :78 .— Kogo, 1998 :61 –63, 65–67. Diagnosis . A genus of Mariametridae with centrodorsal thin, discoidal; radials partly or completely concealed by centrodorsal; cirrus sockets restricted to centrodorsal margin, not encroaching on broad aboral pole; brachitaxes separated or in close lateral apposition; brachitaxis ossicles usually thickened laterally, producing characteristically apposed flattened margins, sometimes weakly crenulate, or weakly thickened with margins not apposed; cirri of <35 cirrals; distal cirrals smooth or bearing aboral carination that may develop into a low triangular spine; P1, P2 and sometimes P3 with reduced ambulacral groove; P2 largest, tapering to finely flagellate tip; pinnulars barely longer than broad; articular facets normally developed.