AMNH306, Bed 34, Ambo section 16 (Permian to of Peru)

Where: Huanuco, Peru (10.1° S, 76.2° W: paleocoordinates 23.3° S, 51.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Copacabana Group, Asselian to Asselian (298.9 - 290.1 Ma)

• 20 feet thick.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, shelly/skeletal, yellow sandstone and lithified, shelly/skeletal limestone

• Sandstone, yellowish, fossiliferous, interbedded with thin layers of fossiliferous limestone.

Size class: macrofossils

Preservation: replaced with silica

Collection methods: bulk, chemical,

Primary reference: N. D. Newell, J. Chronic, and T.G. Roberts. 1953. Upper Paleozoic of Peru. Geological Society of America Memoir 58:1-276 [D. Bottjer/M. Clapham/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41388: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Stems and rare plates
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia sicuaniensis Chronic 1949
 Spiriferida - Elythidae
Phricodothyris guadalupensis Shumard 1859
n. ssp. peruensis