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Gillicus arcuatus

Geological Range

Turonian to Santonian

Paleogeographic Distribution

Kansas to Wyoming to South Dakota

Stratigraphic Occurrences

Santonian
Niobrara Formation (Smoky Hill) (KS)
Coniacian
Niobrara Formation (Smoky Hill Member) (KS)
Turonian
Carlile Shale (Turner Sandy Member) (SD)
Unknown Stage
Carlile Shale (Blue Hill Mbr) (KS)
Niobrara Formation (Smoky Hill Mbr) (KS)
Pierre Shale (SD)
Pierre Shale (WY)
<i> Gillicus arcuatus </i> from the Late Cretaceous Niobrara Fm. of Graham County, Kansas (YPM VP 58768).
Gillicus arcuatus from the Late Cretaceous Niobrara Fm. of Graham County, Kansas (YPM VP 58768).

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