Mataeocephalus is a genus of rattails.
Species There are currently six recognized species in this genus: Mataeocephalus acipenserinus (Gilbert & Cramer, 1897) (Sturgeon grenadier) Mataeocephalus adustus H. M. Smith & Radcliffe, 1912 Mataeocephalus cristatus Sazonov, Shcherbachev & Iwamoto, 2003 Mataeocephalus hyostomus (H. M. Smith & Radcliffe, 1912) Mataeocephalus kotlyari Sazonov, Shcherbachev & Iwamoto, 2003 (Kotlyar's whiptail) Mataeocephalus tenuicauda (Garman, 1899) (Slendertail grenadier)
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