| Dizygocrinus gorbyi, Hylodecrinus briareus and Dichocrinus sp. Warsaw Formation Adams Co., Illinois Size: 11 cm across the crinoids. | 
|
| Dizygocrinus gorbyi, Hylodecrinus briareus and Dichocrinus sp. Warsaw Formation Adams Co., Illinois Size: 11 cm across the crinoids. |
|