| Phylum: Brachiopoda Class: Articulata Location: Tucson Mountains. Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Cnidaria Class: Anthozoa Subclass: Zoantharia Order: Rugosa Rugose Coral Location: Tucson Mountains. Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Echinodermata Class: Crinoidea Crinoid Stems (poorly preserved) Location: Tucson Mountains. Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Echinoid Plate Location: Tucson Mountains. Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spine Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spine Age: Mid to late Permian Formation: Rain Valley | ![]() |
| Phylum: Echinodermata Class: Crinoidea Crinoid Section with Urchin Spines and Branching Bryozoa Location: Tucson Mountains. Age: Mid to late Permian Formation: Rain Valley | ![]() |