There are 10 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 13200 | M. Foote | Roadcut near Turkey Creek on south side of county highway east of Fort Atkinson (= Porocrinus fayettensis-Pleurocystites beckeri-Sygcaulocrinus typus Community at) Richmondian - Ordovician 5 - Iowa | Frest et al. (1999) |
| 23237 | S. Holland | Fort Atkinson Limestone Ostracodes of Iowa Maysvillian - Ordovician 5 - Iowa | Swain (1987) |
| 23524 | S. Holland | Fort Atkinson Limestone Echinoderms, Upper Mississippi Valley (Illinois, Iowa) Maysvillian - Ordovician 5 - Illinois, Iowa | Kolata et al. (1987) |
| 23785 | S. Holland | Fort Atkinson Limestone Cephalopods, Illinois, Iowa, Wisconsin Maysvillian - Ordovician 5 - Illinois, Iowa, Wisconsin | Catalani (1987) |
| 28166 | S. Holland | Maquoketa Group, Fort Atkinson Fm, northeastern Iowa-northwestern Illinois Richmondian - Ordovician 5 - Iowa, Illinois | Elias (1983) |
| 28167 | S. Holland | Maquoketa Group, Fort Atkinson Fm, southern Illinois Richmondian - Ordovician 5 - Illinois | Elias (1983) |
| 75744 | P. Novack-Gottshall | Unit 8, Fort Atkinson Formation Richmondian - Ordovician 5 - Wisconsin | Sivon (1980) |
| 192093 | P. Wagner | Kankakee River Richmondian - Ordovician 5 - Illinois | Wang (1949) |
| 197197 | P. Wagner | Clermont Richmondian - Ordovician 5 - Iowa | Parsley (1970) |
| 204093 | P. Wagner | Three quarters of a mile southwest of Ossian Richmondian - Ordovician 5 - Iowa | Wang (1949) |