There are 11 matches

Collection Authorizer Collection name Reference
23788S. Holland Sardeson Collection, Glenwood Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23789S. Holland Sardeson Collection, Pecatonica Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23790S. Holland Sardeson Collection, Mifflin Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23791S. Holland Sardeson Collection, Grand Detour Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23792S. Holland Sardeson Collection, Nachusa Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23794S. Holland Sardeson Collection, Quimbys Mill Formation, Illinois and Iowa Blackriveran - Ordovician 4 - Illinois, Iowa Catalani (1987)
23795S. Holland Sardeson Collection, Spechts Ferry Formation, Illinois and Iowa Blackriveran/Rocklandian - Ordovician 4 - Illinois, Iowa Catalani (1987)
23796S. Holland Sardeson Collection, Guttenberg Formation, Illinois and Iowa Rocklandian/Kirkfieldian - Ordovician 4 - Illinois, Iowa Catalani (1987)
23798S. Holland Sardeson Collection, Ion Formation, St. James Member, Illinois and Iowa Kirkfieldian - Ordovician 4 - Illinois, Iowa Catalani (1987)
173287P. Wagner Section in abandoned quarry ¼ mile southeast of Gale Gamachian - Ordovician 5 - Illinois Savage (1913)
173289P. Wagner 2½ kilometers north of Thebes Gamachian - Ordovician 5 - Illinois Savage (1913)

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