There are 7 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 23469 | S. Holland | Dunleith Formation, Beecher Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Iowa, Illinois | Kolata et al. (1987) |
| 23470 | S. Holland | Dunleith Formation, Eagle Point Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Illinois, Iowa | Kolata et al. (1987) |
| 23471 | S. Holland | Dunleith Formation, Fairplay Member Echioderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Illinois, Iowa | Kolata et al. (1987) |
| 23477 | S. Holland | Dunleith Formation, Sherwood Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Illinois, Iowa | Kolata et al. (1987) |
| 23481 | S. Holland | Dunleith Formation, Wall Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Illinois, Iowa | Kolata et al. (1987) |
| 23486 | S. Holland | Dunleith Formation, Wyota Member Echinoderms, Upper Mississippi Valley Shermanian - Ordovician 4-5 - Illinois, Iowa | Kolata et al. (1987) |
| 138446 | P. Wagner | Cotylacrinna Sample 1 Burr Oak (coll. Brower) Katian - Ordovician 5 - Iowa | Brower (2013) |