| 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 |  |
| 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 |  |
| Outcrop with Gastropods and Bivalves High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve Mold High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve Mold High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Gastropoda Snail High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve Mold High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve Mold High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve Mold High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |