Crassodontidanus is an extinct genus of sharks and the sole member of the family Crassodontidanidae, in the order Hexanchiformes. It contains two extinct species.A new Jurassic cow shark (Chondrichthyes, Hexanchiformes) with comments on Jurassic hexanchiform systematics. Swiss Journal of Geosciences, 104 (Suppl. 1): 107-114
Species Crassodontidanus serratus Fraas, 1855 Crassodontidanus wiedenrothi Thies, 1983
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