AMNH297, Bed 10a, Cerro Ampáy section 7, Abancáy (Permian to of Peru)

Where: Apurimac, Peru (13.6° S, 72.9° W: paleocoordinates 27.9° S, 49.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Bed 10 is 190 feet in total, fossils at 90 ft (10a?) and 150 ft above base.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, shelly/skeletal, gray limestone

• Limestone, gray, with veins of calcite, silicified fossils.

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 41349: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Euomphalina - Omphalotrochidae
Omphalotrochus obtusispira Shumard 1859 snail
Echinoidea
  -
Echinocrinus sp. Agassiz 1841 sea urchin
Plates
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Stems and rare plates
Strophomenata
 Productida - Productellidae
"Dictyoclostus boliviensis" = Alpavlia boliviensis
"Dictyoclostus boliviensis" = Alpavlia boliviensis d'Orbigny 1842
Rhynchonellata
 Athyridida - Athyrididae
Composita subtilita Hall 1852
n. ssp. peruviana