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Ptychotrygon greybullensis

Geological Range

Maastrichtian

Paleogeographic Distribution

North Dakota

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (ND)
<i> Ptychotrygon greybullensis </i> from the Maastrichtian Fox Hills Fm. of North Dakota. Image is derived from Hoganson et al. (2019; Bulletins of American Paleontology No. 398) and is used here with permission of the Paleontological Research Institution, which retains the copyright.
Ptychotrygon greybullensis from the Maastrichtian Fox Hills Fm. of North Dakota. Image is derived from Hoganson et al. (2019; Bulletins of American Paleontology No. 398) and is used here with permission of the Paleontological Research Institution, which retains the copyright.
Stratigraphic position unknown
Stratigraphic position unknown