Skip to Main Content

Protocardia rara

Geological Range

Campanian to Maastrichtian

Paleogeographic Distribution

Colorado to Montana

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (CO)
Fox Hills Formation (WY)
Campanian
Pierre Shale (SD) [Campanian]
Unknown Stage
Pierre Shale (MT)
<i>Protocardia rara</i> from the Pierre Shale of Meade County, South Dakota (FHSMIP 1334).
Protocardia rara from the Pierre Shale of Meade County, South Dakota (FHSMIP 1334).
Stratigraphic position unknown
Stratigraphic position unknown