Where: Ayacucho, Peru (12.8° S, 74.2° W: paleocoordinates 26.7° S, 50.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Copacabana Group, Asselian to Asselian (298.9 - 290.1 Ma)
• 250 feet thick, silicified fossils at base, fusulines at 60, 70, 95, 165, 230, 240 feet above base.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, shelly/skeletal, gray, blue 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 41370: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
"? Avonia boulei" = Echinauris boulei
"? Avonia boulei" = Echinauris boulei Kozlowski 1914 | |
Rhynchonellata | |
Dielasma scitulum Chronic 1949 |