There are 4 matches

Collection Authorizer Collection name Reference
23276S. Holland Sardeson Collection, Platteville Formation Blackriveran/Rocklandian - Ordovician 4-5 - Minnesota Rice and Hedblom (1987)
23277S. Holland Sardeson Collection, Decorah Shale Rocklandian/Shermanian - Ordovician 4-5 - Minnesota Rice and Hedblom (1987)
23278S. Holland Sardeson Collection, Cummingsville Formation Shermanian - Ordovician 4-5 - Minnesota Rice and Hedblom (1987)
23280S. Holland Sardeson Collection, Stewartville Formation Edenian - Ordovician 5 - Minnesota Rice and Hedblom (1987)

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