The sailfin roughshark is the only Atlantic roughshark have an incline first dorsal fin spine.

Sailfin rough sharks live in the northeast and eastern central Atlantic. They are found along the slope of Scotland and Mid-Atlantic ridge, and from Morocco to the Gulf of Guinea.

The angular rough shark has a broad, flattened head, a short, blunt nose, and two tall, sail-like dorsal fins.

The angular roughshark typically moves by gliding along the seabed, pausing frequently to hover over the sandy or muddy surface.

Rough sharks have triangular cross sections.

Rough sharks are named for their atypically large dermal denticles.

The Caribbean roughshark was described in 1961 yet was only lately observed in its natural environment.