There are 2 matches

Collection Authorizer Collection name Reference
20963H. Sims Dongola Quadrangle Locality C Serpukhovian - Carboniferous 3 - Illinois Lacey and Eggert (1964)
23926H. Sims Union Co. Loc 8 Carboniferous - Carboniferous 1-5 - Illinois Jennings (1984)

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