Field Photos From the Sonoita Expedition 10/2000
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spine Location: Near Sonoita Az. Age: Permian Formation: Colina In places, this formation appears to made of Sea Urchin Spines |  |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spine Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Sea Urchin Spines Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Echinodermata Subphylum: Echinozoa Class: Echinoidea Large Urchin Spine Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Echinodermata Class: Crinoidea Crinoid Stem Location: Near Sonoita Az. Age: Pennsylvanian Formation: Horquilla |  |
| Phylum: Cnidaria Class: Anthozoa Subclass: Zoantharia Order: Rugosa Rugose Coral Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Cnidaria Class: Anthozoa Subclass: Zoantharia Order: Rugosa Rugose Coral Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Brachiopod Strophomenide and Chaetetes Coral (A marker species for the Horquilla Limestone) Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Brachiopoda Class: Articulata Order: Strophomenidina Suborder: Productid Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Brachiopoda Class: Articulata Order: Strophomenidina Suborder: Productid Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Brachiopoda Class: Articulata Order: Strophomenidina Suborder: Productid Location: Near Sonoita Az. Age: Permian Formation: Colina |  |
| Phylum: Brachiopoda Class: Articulata Order: Strophomenidina Suborder: Productid Location: Near Sonoita Az. Age: Permian Formation: Colina |  |