Morphological diagnoses of higher taxa in Ophiuroidea (Echinodermata) in support of a new classification Author Stöhr, Sabine Author Hugall, Andrew F. Author Thuy, Ben Author Martynov, Alexander text European Journal of Taxonomy 2018 2018-03-21 416 1 35 journal article 22339 10.5852/ejt.2018.416 2eebb037-4ab1-433c-a9f6-8fe319e9fda9 3806109 AD094812-5768-43E9-BCC2-9226E69F0820 Family Ophiotomidae Paterson, 1985 stat. nov . Ophiotretidae O’Hara et al ., 2017: 421 , figs 1–2 (nomen nudum). Type genus Ophiotoma Lyman, 1883 ( type species: O . coriacea Lyman, 1883 ). Other genera Ophiocomina Koehler in Mortensen, 1920 , Ophiocopa Lyman, 1883 , Ophiomitra Lyman, 1869 , Ophiopristis Verrill, 1899a , Ophiotreta Verrill, 1899a . Diagnosis Dorsal disc with granules or long, thorny spines. Abradial genital plate with concave adradio-distal tip. Arm spines flattened, laterally serrated. Dental plate fragmented ( Ophiotreta , Ophiocopa ) or entire ( Ophiocomina , Ophiotoma ), sockets shallow. Ventral clusters of short, papilliform teeth in Ophiotreta and Ophiocomina . Arm spine articulation lobes with small perforations or imperforate. Ridge on the inner side of the lateral arm plates with two kinks and a ventro-proximalwards pointing projection associated with the dorsal kink. This family was mistakenly named Ophiotretidae in O’Hara et al . (2017) . Remarks The species Ophiocomina australis H.L. Clark, 1928 is a Clarkcoma species (Naughton et al. 2014; O’Hara et al. 2017 ), which leaves Ophiocomina monotypic. Ophiotoma is polyphyletic ( O’Hara et al. 2017 ).