There are 4 matches

Collection Authorizer Collection name Reference
23280S. Holland Sardeson Collection, Stewartville Formation Edenian - Ordovician 4 - Minnesota Rice and Hedblom (1987)
23281S. Holland Sardeson Collection, Dubuque Formation Edenian - Ordovician 4 - Minnesota Rice and Hedblom (1987)
23282S. Holland Sardeson Collection, Maquoketa Formation, Elgin Member Edenian/Maysvillian - Ordovician 4 - Minnesota Rice and Hedblom (1987)
23283S. Holland Sardeson Collection, Maquoketa Formation, Clermont Member Maysvillian - Ordovician 4 - Minnesota Rice and Hedblom (1987)

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