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Spoon River [Carbondale Fm] (Carboniferous of the United States)

Where: Knox County, Illinois (40.3° N, 90.1° W: paleocoordinates 5.2° S, 25.2° W)

• coordinate based on nearby landmark

When: Oak Grove Member (Carbondale Formation), Desmoinesian (313.8 - 305.9 Ma)

• Middle Desmoinesian

Environment/lithology: marine; lithified lithology not reported

Primary reference: P. H. von Bitter and G. K. Merrill. 1998. Apparatus composition and structure of the Pennsylvanian conodont genus Gondolella based on assemblages from the Desmoinesian of northwestern Illinois, U.S.A. Journal of Paleontology 72(1):112-132 [J. Alroy/M. Sommers/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 30: authorized by John Alroy, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)