Macrocephenchelys Fowler [H. W.] 1934:275 Fem. Macrocephenchelys brachialis Fowler 1934. Type by original designation (also monotypic). Has been placed in its own family Macrocephenchelyidae; now placed in the Congridae -- (see McCosker et al. 1989:256 [ref. 13288], also Smith 1989:512 [ref. 13285]). •Valid as Macrocephenchelys Fowler 1934 -- (Robins & Robins 1971 [ref. 7127], Karrer 1982:48 [ref. 5679], Castle 1990 [ref. 15487], Smith 1999:1685 [ref. 24661], Hoese & Gates 2006:296 [ref. 28997], Ho et al. 2010:23 [ref. 31218], Lin et al. 2018:187 [ref. 36045], Kodeeswaran et al. 2023:1 [ref. 40191]). Current status: Valid as Macrocephenchelys Fowler 1934. Congridae: Congrinae.