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Modiolus galpinianus

Geological Range

Campanian to Maastrichtian

Paleogeographic Distribution

South Dakota to Montana

Stratigraphic Occurrences

Maastrichtian
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)
Unknown Stage
Fox Hills Formation (ND)
Pierre Shale (MT)
<i>Modiolus galpinianus</i> from the Fox Hills Formation (Timber Lake Member) of Corson County, South Dakota (YPM 24118).
Modiolus galpinianus from the Fox Hills Formation (Timber Lake Member) of Corson County, South Dakota (YPM 24118).
Stratigraphic position unknown
Stratigraphic position unknown