#ptychotrygonidae
Ptychotrygonidae
Extinct family of cartilaginous fishes
Ptychotrygonidae is an extinct family of cartilaginous fish from the Cretaceous period belonging to the suborder Sclerorhynchoidei. This family contains the genera Archingeayia, Asflapristis, Ptychotrygon, Ptychotrygonoides, and Texatrygon.
Fri 16th
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