Field Photos From the Sonoita Expedition July 2002

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Phylum: Mollusca
Class: Gastropoda
Sub-class: Prosobranchia
Order: Archaeogastropoda
Genus: Straparollus
Snail
Location: Near Sonoita Az.
Age: Permian
Formation: Colina
Phylum: Bryozoa
Class: Stenolaemata
Order: Fenestrata
Bryozoa
Location: Near Sonoita Az.
Age: Permian
Formation: Colina
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