Posidonichthys Briggs [J. C.] 1993:196 Masc. Posidonichthys hutchinsi Briggs 1993. Type by original designation (also monotypic). •Valid as Posidonichthys Briggs 1993 -- (Hoese & Bray 2006:1576 [ref. 29000], Hutchins 2008:741 [ref. 30658], Conway et al. 2020:889 [ref. 38030] in Cheilobranchinae). Current status: Valid as Posidonichthys Briggs 1993. Gobiesocidae: Cheilobranchinae.