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Derbyia kansasensis

Geological Range

Missourian to Virgilian; Extinct.

Paleogeographic Distribution

Kansas to Missouri.

Stratigraphic Occurrences

Virgilian
Lecompton Limestone (Beil Limestone Member) (KS)
Stranger Formation (Iatan Limestone Member) (KS)
Missourian
Dewey Formation (Cement City Limestone) (MO)
Drum Limestone (KS)
Iola Limestone (KS)
Virgillian Map
Virgillian Map
Missourian Map
Missourian Map