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Placenticeras whitfieldi

Geological Range

Campanian to Maastrichtian

Paleogeographic Distribution

Colorado to Montana

Stratigraphic Occurrences

Maastrichtian
Pierre Shale (SD)
Campanian
Bearpaw Shale (Upper) (MT) [Campanian]
Pierre Shale (MT)
Unknown Stage
Cody Shale (WY)
Pierre Shale (NE)
Pierre Shale (SD)
Telegraph Creek Formation (WY)
Tepee Butte (CO)
<i> Placenticeras whitfieldi </i> from the Late Cretaceous of South Dakota (YPM 224090).
Placenticeras whitfieldi from the Late Cretaceous of South Dakota (YPM 224090).
<i> Placenticeras whitfieldi </i> from the Late Cretaceous Pierre Shale (YPM 219132).
Placenticeras whitfieldi from the Late Cretaceous Pierre Shale (YPM 219132).
Stratigraphic position unknown
Stratigraphic position unknown