| Phylum: Mollusca Class: Cephalopoda Natiloid Age: Mid to late Permian Formation: Concha High Resosution Image |  |
| Phylum: Mollusca Class: Cephalopoda Natiloid Age: Mid to late Permian Formation: Concha High Resosution Image |  |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spine Location: Tucson Mountains. Age: Mid to late Permian Formation: Concha Limestone High Resosution Image |  |
| Phylum: BrachiopodaBrachiopod Lophophore structures are exposed Age: Mid to late Permian Formation: Concha Limestone High Resosution Image |  |
| Phylum: Brachiopoda Class: Articulata Order: Spiriferidea Suborder: Athyrididina Genus: Composita Lophophore structures are exposed Age: Mid to late Permian Formation: Concha High Resosution Image |  |
| Field View High Resosution Image Location: Tucson Mountains |  |
| Petrified Wood High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Petrified Wood High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Petrified Wood High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Petrified Wood High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |