Field Photos From the Sonoita Expedition July 2002
| Phylum: Mollusca Class: Gastropoda Sub-class: Prosobranchia Order: Archaeogastropoda Genus: Straparollus Snail Location: Near Sonoita Az. Age: Pennsylvanian Formation: Horquilla Limestone |  |
| Phylum: Bryozoa Class: Stenolaemata Order: Fenestrata Bryozoa Location: Near Sonoita Az. Age: Pennsylvanian Formation: Horquilla Limestone |  |