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Hesperornis chowi

Geological Range

Late Cretaceous

Paleogeographic Distribution

South Dakota

Stratigraphic Occurrences

Unknown Stage
Pierre Shale (SD)
<i> Hesperornis chowi </i> from the Late Cretaceous Pierre Shale of Pennington County, South Dakota (YPM VP 017208).
Hesperornis chowi from the Late Cretaceous Pierre Shale of Pennington County, South Dakota (YPM VP 017208).

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