extensus, Lycodapus Gilbert [C. H.] 1896:455 [United States Commission of Fish and Fisheries, Report of the Commissioner v. 19 (for 1893) (art. 6); ref. 1628] North of Unalaska Island, Alaska, U.S.A., 53°33'50"N, 167°46'50"W, Albatross station 3324, depth 109 fathoms. Holotype (unique): USNM 48638 (poor condition). Type catalog: Springer & Anderson 1997:18 [ref. 22953]. •Status uncertain, nomen dubium -- (Peden & Anderson 1978:1957 [ref. 8895], Anderson 1994:118 [ref. 21438], Anderson & Fedorov 2004:48 [ref. 27603]). Nomen Dubium. Zoarcidae: Lycodinae. Habitat: marine.