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Genus Deania
Brier shark - The birdbeak dogfish has a very long narrow snout, no anal fin, two long and low dorsal fins with grooved spines, small rectangular pectoral fins, and pitchfork-like denticles.
Rough longnose dogfish - Rough longnose dogfish have an extremely long snout, no anal fin, small grooved dorsal spines, and rough pitchfork-shaped dermal denticles.
Arrowhead dogfish - Arrowhead dogfish have extremely long angular snouts, no anal fin, small first dorsal and long rear dorsal spines, and pitchfork shaped dermal denticles.
Longsnout dogfish - Longsnout dogfish have an extremely long angular snout, no anal fin, dorsal fins of similar size with the first placed high on the back and the second having a longer rear free tip, and pitchfork shaped dermal denticles.
