There are 2 matches
| Collection | Authorizer | Collection name | Reference |
|---|---|---|---|
| 25041 | M. Foote | Tabulate Coral-Lamellar Stromatoporoid Comm., Llandovery, E Iowa and NW Illinois Llandovery - Silurian 1 - Iowa | Witzke and Johnson (1999) |
| 26691 | M. Foote | Brockocystis nodosaria-Polytryphocycloides Assoc., Llandovery, Eastern Iowa Rhuddanian/Aeronian - Silurian 1 - Iowa | Frest et al. (1999) |