There are 4 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 3408 | J. Alroy | Rockford (Mallory) Frasnian - Devonian 4 - Iowa | Wallace (1978) |
| 6253 | A. Miller | Rockford brick and Tile Company pit, Lime Creek Formation, Iowa Frasnian - Devonian 4 - Iowa | De Keyser (1977) |
| 54695 | A. Stigall | Palo Givetian - Devonian 3 - Iowa | Rode and Lieberman (2004) |
| 54945 | A. Stigall | Rockford Frasnian - Devonian 4 - Iowa | Rode and Lieberman (2004) |