''Tethytrygon'' is an extinct genus of stingray in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Dasyatidae.

References

Shark references - Extinct - complete list

Fossilworks - †Dasyatis muricata Volta 1796 (ray)
Dasyatis {{rajiformes-stub