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Idonearca shumardi

Geological Range

Maastrichtian.

Paleogeographic Distribution

South Dakota.

Stratigraphic Occurrences

Maastrichtian
Pierre Shale (SD)
<i>Idonearca shumardi</i> from the Pierre Shale of South Dakota (FHSMIP 1341).
Idonearca shumardi from the Pierre Shale of South Dakota (FHSMIP 1341).

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