Field Photos From Sonoita April - June 2005
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Petrified Wood Age: Cretaceous Formation: Fort Crittenden |  |
| Leaves Age: Cretaceous Formation: Fort Crittenden |  |
| Bone Fragment? Age: Cretaceous Formation: Fort Crittenden |  |
| Phylum: Brachiopoda Class: Articulata Order: Spiriferidea Suborder: Athyrididina Genus: Composita Age: Age: Pennsylvanian? Formation: Horquilla Limestone? |  |
| Phylum: Echinodermata Crinoid stem Location: Near Sonoita Az. Age: Pennsylvanian? Formation: Horquilla Limestone? |  |