There are 11 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23750 | S. Holland | St. Peter Sandstone Cephalopods, Illinois, Iowa, Wisconsin Blackriveran - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23768 | S. Holland | Dunleith Formation, Beecher Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23769 | S. Holland | Dunleith Formation, Eagle Point Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23770 | S. Holland | Dunleith Formation, Fairplay Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23773 | S. Holland | Dunleith Formation, Rivoli Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23775 | S. Holland | Dunleith Formation, Sherwood Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23776 | S. Holland | Dunleith Formation, Wall Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23777 | S. Holland | Dunleith Formation, Wyota Member Cephalopods, Illinois, Iowa, Wisconsin Shermanian - Ordovician 4-5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23779 | S. Holland | Wise Lake Formation, Rifle Hill Member Cephalopods, Illinois, Iowa, Wisconsin Edenian - Ordovician 5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23780 | S. Holland | Dubuque Formation Cephalopods, Illinois, Iowa, Wisconsin Edenian - Ordovician 5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 23783 | S. Holland | Scales Shale, Elgin Member Cephalopods, Illinois, Iowa, Wisconsin Edenian/Maysvillian - Ordovician 5 - Illinois, Iowa, Wisconsin | Catalani (1987) |