| Darriwilian/Sandbian/Katian | Womble Shale | Arkansas | | 3 |
| Darriwilian/Sandbian/Katian | Decorah Formation | Iowa | | 8 |
| Darriwilian/Sandbian/Katian | Specht's Ferry | Illinois | | 1 |
| Katian | Whitewater Formation | Indiana | | 2 |
| Katian | Richmondian Series | Indiana | | 8 |
| Katian | Eden Shale | Indiana | | 1 |
| Katian | Mount Hope | Indiana | | 2 |
| Katian | Maysville Formation | Indiana | | 7 |
| Katian | Cincinnatian Series | Indiana | | 3 |
| Katian | Kope Formation | Indiana | | 1 |
| Katian | Maquoketa Group | Indiana | | 1 |
| Katian | Lexington Limestone | Indiana | | 1 |
| Katian | Trenton Limestone | Indiana | | 7 |
| Sandbian | Plattin Formation | Indiana | | 1 |
| Sandbian | Black River Group | Indiana | | 1 |
| Darriwilian/Sandbian/Katian | Chazy Limestone | Kentucky | | 3 |
| Darriwilian/Sandbian/Katian | Dolgeville Formation | New York | | 1 |
| Darriwilian | Deepkill Shale | New York | | 1 |
| Tremadocian | Day Point | New York | | 1 |
| Darriwilian/Sandbian/Katian | Viola Formation | Oklahoma | | 1 |
| Darriwilian | Oil Creek Formation | Oklahoma | | 1 |
| Tremadocian | West Springs Creek | Oklahoma | | 1 |
| Tremadocian | Bellefonte Dolomite | Pennsylvania | | 1 |
| Sandbian/Katian | Fernvale Limestone | Tennessee | | 1 |
| Darriwilian | Pierce Limestone | Tennessee | | 1 |
| Darriwilian | Woods Hollow Formation | Texas | | 1 |
| Darriwilian | Whistle Creek Limestone | Virginia | | 1 |
| Brande Limestone | | | 1 |
| Leiber | | | 1 |
| General Ordovician | Miscellaneous | USA | | 20 |
| Sanbian | Kirkfield Limestone | Ontario | | 1 |
| General Ordovician | Miscellaneous | Non-USA | International Collection | 3 |
