| 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 |  |
| Plant Stem? High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Plant debris High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
Plant debris High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
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| Phylum: Mollusca Class: Bivalvia (Pelecypoda) Bivalve/Concreation High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Concreation High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |
| Concreation High Resosution Image Location: Tucson Mountains Age: Early Cretaceous Formation: Amole Arkose |  |