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Didymoceras nebrascense

Geological Range

Didymoceras nebrascense Zone: Upper Campanian 75.19 ± 0.28

Paleogeographic Distribution

Wyoming to Montana

Stratigraphic Occurrences

Maastrichtian
Pierre Shale (SD)
Campanian
Bearpaw Shale (Upper) (MT) [Campanian]
Mesaverde Formation (Teapot Ss Member) (WY)
Unknown Stage
Pierre Shale (SD)
Pierre Shale (WY)
Holotype of <i>Didymoceras nebrascense</i> (USNM 469). Original unmodified images provided by courtesy of the Smithsonian NMNH and adapted and presented here under a Creative Commons BY-NC 4.0 license (NMNH GUID http://n2t.net/ark:/65665/3fac1e44b-6640-4962-9450-7f3c8fce2b8d).
Holotype of Didymoceras nebrascense (USNM 469). Original unmodified images provided by courtesy of the Smithsonian NMNH and adapted and presented here under a Creative Commons BY-NC 4.0 license (NMNH GUID http://n2t.net/ark:/65665/3fac1e44b-6640-4962-9450-7f3c8fce2b8d).
<i> Didymoceras nebracense </i> from the Pierre Shale of Custer County, South Dakota (YPM 006093).
Didymoceras nebracense from the Pierre Shale of Custer County, South Dakota (YPM 006093).
Stratigraphic position unknown
Stratigraphic position unknown