Field Photos 11-2003 through 1-2004

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Phylum: Echinodermata
Class: Crinoidea
Crinoid Stem
Location: Tucson Mountains.
Age: Mid to late Permian
Formation: Rain Valley
Phylum: Brachiopoda
Class: Articulata
Order: Rhynchonellida
Location: Tucson Mountains
Age: Mid to late Permian
Formation: Concha
Phylum: Brachiopoda
(Unidentified)
Location: Tucson Mountains
Age: Mid to late Permian
Formation: Concha
Phylum: Brachiopoda
Class: Articulata
Order: Rhynchonellida
(Magnified)
Location: Tucson Mountains
Age: Mid to late Permian
Formation: Concha
Phylum: Brachiopoda
(Unidentified)
Location: Tucson Mountains
Age: Mid to late Permian
Formation: Concha
Phylum: Brachiopoda
Class: Articulata
Order: Strophomenidina
Suborder: Productid
The concavo-convex shell symmetry can be seen here. In cross section these look like crescent moons.
Location: Tucson Mountains.
Age: Mid to late Permian
Formation: Concha
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: Brachiopoda
Class: Articulata
Order: Spiriferidea
Suborder: Athyrididina
Genus: Composita

Age: Mid to late Permian
Formation: Concha
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