aceratus, Chaenichthys Lönnberg [E.] 1906:(5) 97 [Kongliga Vetenskaps-Academiens Handlingar, Stockholm n. s., Series 4, v. 40 (no. 5); ref. 12988] South Georgia Island, South Atlantic. Holotype (unique): NRM SYD/1904508.3001. •Valid as Cryodraco aceratus Lönnberg 1906 -- (Voskoboinikova 2000:329 [ref. 25153]). •Valid as Chaenocephalus aceratus (Lönnberg 1906) -- (Iwami & Kock 1990:381 [ref. 21699], Miller 1993:426 [ref. 21297], Voskoboinikova 1997:370 [ref. 23336], Pequeño 1997:84 [ref. 23536], Frolkina et al. 1998:130 [ref. 24763], Eastman & Eakin 2000:17 [ref. 24631], Prirodina 2002:733 [ref. 26573], Balushkin 2000:S99 [ref. 29555], Arana et al. 2020:315 [ref. 41264], Uzunova et al. 2020:[4] [ref. 37628], Eastman & Eakin 2021:[5] [ref. 38307]). Current status: Valid as Chaenocephalus aceratus (Lönnberg 1906). Channichthyidae. Distribution: South Atlantic: South Georgia, South Orkney Islands. Habitat: marine.