AMNH297, Bed 15a, 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 15 in total is 860 feet thick, fossils at 380, 530, 765, and 820 ft above base.

• group of beds-level stratigraphic resolution

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

• Limestone, gray, with interbedded thin units of black shale, contains silicified fossils and non-silicified fusulines.

Size class: macrofossils

Preservation: original calcite, 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 41354: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Stems and rare plates
Rhynchonellata
 Athyridida - Athyrididae
Composita subtilita
Composita subtilita Hall 1852
n. ssp. peruviana