Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 0; Vertebrae: 41 - 44
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Bass, A.J., L.J.V. Compagno and P.C. Heemstra 1986 Squalidae. p. 49-62. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 6577)
http://www.fishbase.org/references/FBRefSummary.php?id=6577&speccode=670
