echinatum, Leiodon Wood [W.] 1846:174 [Proceedings of the Boston Society of Natural History v. 2 (1845-1848); ref. 4760] About 80 miles east of Portland, Maine, U.S.A. Holotype (unique): whereabouts unknown (stuffed). Not mentioned in Yano et al. 2004 [ref. 28078]. •Synonym of Somniosus microcephalus (Bloch & Schneider 1801) -- (Compagno 1984:103 [ref. 6474], Dyldin 2015:56 [ref. 34524]). Current status: Synonym of Somniosus microcephalus (Bloch & Schneider 1801). Somniosidae. Habitat: marine.