| Urchin Spines Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Urchin Spines Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Urchin Spines Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Bryozoa Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Brachiopod Productid Dictyoclostus sp. Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Coral Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |
| Brachiopod Internal mold of the pedicle valve Location: Near Sonoita Az. Age: Pennsylvanian/Permian Formation: Unknown | ![]() |