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Chouteau Formation (Union Co. Illinois) (Carboniferous to of the United States)

Where: Union County, Illinois (37.5° N, 89.2° W: paleocoordinates 23.6° S, 36.6° W)

• coordinate based on political unit

When: Chouteau Formation, Kinderhookian to Kinderhookian (360.7 - 353.8 Ma)

• Late Kinderhookian and Osagean

Environment/lithology: marine; carbonate

Primary reference: D. K. Brezinski. 1998. Trilobites from the Lower Mississippian starved basin facies of the southern United States. Journal of Paleontology 72(4):718-725 [J. Alroy/M. Sommers/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9: authorized by John Alroy, entered by Mike Sommers on 20.11.1998

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