Synaphobranchus Johnson [J. Y.] 1862:169 Masc. Synaphobranchus kaupii Johnson 1862. Type by monotypy. •Valid as Synaphobranchus Johnson 1862 -- (Blache et al. 1973:252 [ref. 7185], Karrer 1982:84 [ref. 5679], Asano in Masuda et al. 1984:26 [ref. 6441], Saldanha & Bauchot in Whitehead et al. 1986:591 [ref. 13676], Castle 1986:190 [ref. 5644], Paxton et al. 1989:108 [ref. 12442], Robins & Robins 1989:219 [ref. 13287], Gomon et al. 1994:196 [ref. 22532], Sulak & Shcherbachev 1997:1161 [ref. 22986], Smith 1999:1660 [ref. 24661], Mecklenburg et al. 2002:121 [ref. 25968], Smith 2003:722 [ref. 26989], Paxton et al. 2006:263 [ref. 28995], Smith 2008:164 [ref. 30621], Fricke et al. 2009:18 [ref. 30213], Almeida et al. 2010:66 [ref. 31350], Zhang et al. 2010:314 [ref. 31511], Parin et al. 2014:48 [ref. 33547], Smith & Stewart 2015:247 [ref. 34234], Bañón et al. 2016:304 [ref. 34397], Fricke et al. 2018:42 [ref. 35805], Ho et al. 2018:68 [ref. 36038], Fricke et al. 2019:53 [ref. 36673]). Current status: Valid as Synaphobranchus Johnson 1862. Synaphobranchidae: Synaphobranchinae.