There are 9 matches

Collection Authorizer Collection name Reference
23789S. Holland Sardeson Collection, Pecatonica Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23790S. Holland Sardeson Collection, Mifflin Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23791S. Holland Sardeson Collection, Grand Detour Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23792S. Holland Sardeson Collection, Nachusa Formation, Illinois and Iowa Blackriveran - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23797S. Holland Sardeson Collection, Ion Formation, Buckhorn Member, Illinois and Iowa Kirkfieldian - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23798S. Holland Sardeson Collection, Ion Formation, St. James Member, Illinois and Iowa Kirkfieldian - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23799S. Holland Sardeson Collection, Dunleith Formation, Beecher Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa Rice and Hedblom (1987)
23800S. Holland Sardeson Collection, Dunleith Formation, Eagle Point Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa Catalani (1987)
23801S. Holland Sardeson Collection, Dunleith Formation, Fairplay Member, Illinois and Iowa Shermanian - Ordovician 4-5 - Illinois, Iowa Catalani (1987)

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