AMNH298, Bed 53, Pasaje-Picchu Section 8 (Permian to of Peru)

Where: Apurimac, Peru (13.6° S, 73.1° W: paleocoordinates 27.7° S, 50.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• 250 feet thick.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, red siltstone and lithified, dolomitic, shelly/skeletal, red limestone

• Siltstone, red, alternating with gray to red dolomitic, fossiliferous limestone, in beds about 0.5 ft. thick, graging at the top into coarse red sandstone, 15 ft. thick.

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 41334: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cyrtoneritimorpha - Orthonychiidae
Orthonychia parva Shumard and Swallow 1858 snail
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Stems and rare plates
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia sicuaniensis Chronic 1949
 Athyridida - Athyrididae
Composita subtilita Hall 1852
n. ssp. peruviana
 Rhynchonellida - Wellerellidae
Wellerella minuta Chronic 1949