There are 2 matches

Collection Authorizer Collection name Reference
23809S. Holland Sardeson Collection, Dubuque Formation, Illinois, Iowa Edenian - Ordovician 4 - Illinois, Iowa Catalani (1987)
23810S. Holland Sardeson Collection, Scales Shale, Elgin Member, Illinois and Iowa Edenian/Maysvillian - Ordovician 4 - Illinois, Iowa Catalani (1987)

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