The roughskin spurdog, Cirrhigaleus asper, is a dogfish of the family Squalidae, found circumglobally between latitudes 35°N and 35°S, at depths of between 200 and 600 m.
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Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2