There are 6 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 3309 | A. Miller | Wassonville Fm., southeastern Iowa Tournaisian - Carboniferous 1 - Iowa | Laudon (1931) |
| 3310 | A. Miller | Chapin Fm., Productus ovatus Zone, north-central Iowa Tournaisian - Carboniferous 1 - Iowa | Laudon (1931) |
| 3313 | A. Miller | Chapin Fm., Streptorhynchus Zone, north-central Iowa Tournaisian - Carboniferous 1 - Iowa | Laudon (1931) |
| 3314 | A. Miller | Chapin Fm., Cyathaxonia Zone, north-central Iowa Tournaisian - Carboniferous 1 - Iowa | Laudon (1931) |
| 3339 | A. Miller | Maynes Creek Fm., Productus sedaliensis Zone, Franklin Co., IO Tournaisian - Carboniferous 1 - Iowa | Laudon (1931) |
| 5814 | A. Miller | English River Sandston of southeastern Iowa and west central Illinois, Early Mis Tournaisian - Carboniferous 1 - Iowa/Illinois | Carter (1988) |