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Drepanochilus evansi

Geological Range

Campanian to Maastrichtian

Paleogeographic Distribution

South Dakota to Montana

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (SD)
Fox Hills Formation (Iron Lightning Member) (SD)
Fox Hills Formation (Timber Lake Member) (SD)
Fox Hills Formation (Trail City Member) (SD)
Campanian
Pierre Shale (MT)
Pierre Shale (SD) [Campanian]
Unknown Stage
Bear Paw Shale (MT)
<i> Drepanochilus evansi </i> from the Late Cretaceous Pierre Shale Fm. of Meade County, South Dakota (FHSMIP 1264).
Drepanochilus evansi from the Late Cretaceous Pierre Shale Fm. of Meade County, South Dakota (FHSMIP 1264).
Stratigraphic position unknown
Stratigraphic position unknown