Ptychotrygon ritchei
Meyer, 1974 (nomen nudum)
Classification: Elasmobranchii Rajiformes Ptychotrygonidae
Reference of the original description
Late Cretaceous elasmobranchs from the Mississippi and East Texas embayments of the Gulf Coastal Plain. Unpublished Ph.D. thesis, University of Texas at Arlington, 419 p., 106 fig.
Late Cretaceous elasmobranchs from the Mississippi and East Texas embayments of the Gulf Coastal Plain. Unpublished Ph.D. thesis, University of Texas at Arlington, 419 p., 106 fig.
Types
Ptychotrygon ritchei
Ptychotrygon ritchei
Description:
Citation: Ptychotrygon ritchei Meyer, 1974 (nomen nudum): In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 02/2026
Remarks
shark-references Species-ID=3187;
shark-references Species-ID=3187;
References
Late Cretaceous elasmobranchs from the Mississippi and East Texas embayments of the Gulf Coastal Plain. Unpublished Ph.D. thesis, University of Texas at Arlington, 419 p., 106 fig.
Late Cretaceous elasmobranchs from the Mississippi and East Texas embayments of the Gulf Coastal Plain. Unpublished Ph.D. thesis, University of Texas at Arlington, 419 p., 106 fig.
