Synonyms: Apristurus profundicolus
Common name: Onefin catshark
Original description species: Smith & Radcliffe, 1912
Genus: Pentanchus Smith & Radcliffe, 1912
Family: Pentanchidae Smith, 1912
Order: Carcharhiniformes
Superorder: Galeomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii