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Graphidula culbertsoni

Geological Range

Campanian to Maastrichtian

Paleogeographic Distribution

South Dakota to Montana

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (SD)
Fox Hills Formation (Timber Lake Member) (SD)
Fox Hills Formation (Trail City Member) (SD)
Pierre Shale (SD)
Campanian
Pierre Shale (MT)
Pierre Shale (SD) [Campanian]
<i> Graphidula culbertsoni </i> from the Maastrichtian Fox Hills Fm. of Dewey County, South Dakota (SDSM 144582).
Graphidula culbertsoni from the Maastrichtian Fox Hills Fm. of Dewey County, South Dakota (SDSM 144582).
Stratigraphic position unknown
Stratigraphic position unknown