Élasmobranches (requins et raies) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); longicephalus: longus (L.), long; cephalus, from kephale (Gr.), head, about ¼ of total length (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Écologie
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