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.
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 41371: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Trochonematidae indet. von Zittel 1895 snail | |
Strobeus sp., "Strobeus ? regularis" = Soleniscus regularis
Strobeus sp. de Koninck 1881 snail
"Strobeus ? regularis" = Soleniscus regularis Cox 1857 snail | |
? Ananias sp., Peruvispira delicata n. gen.
? Ananias sp. Knight 1945 snail
Peruvispira delicata n. gen. Chronic 1949 snail | |
Pseudozygopleura spp. Knight 1930 snail | |
? Goniasma "sp. 2" Tomlin 1930 snail | |
? Orthonema sp. Meek and Worthen 1862 snail | |
Orthonychia pajerensis n. sp.
Orthonychia pajerensis n. sp. Chronic 1949 snail | |
? Retispira sp. Knight 1945 snail | |
Amphiscapha peruviana Chronic 1949 snail | |
Omphalotrochus obtusispira Shumard 1859 snail | |
Anomphalus sp. Meek and Worthen 1866 snail | |
Bivalvia | |
Astartella nasuta Girty 1908 clam | |
Rostroconchia | |
| |
Strophomenata | |
Waagenoconcha humboldti d'Orbigny 1842 | |
Kiangsiella pinguis n. sp.
Kiangsiella pinguis n. sp. Chronic 1949 | |
Rhynchonellata | |
"Neospirifer condor" = Gypospirifer condor
"Neospirifer condor" = Gypospirifer condor d'Orbigny 1842 | |
| |
Hustedia meridionalis Chronic 1949 | |
Cleiothyridina intonsa n. sp.
Cleiothyridina intonsa n. sp. Chronic 1949 | |
Rhynchopora aff. illinoisensis Worthen 1884 | |
| |
Stenolaemata | |
"Silvaseptopora incaica n. gen." = Septopora incaica
"Silvaseptopora incaica n. gen." = Septopora incaica Chronic 1949 | |
Polypora andina Chronic 1949 | |
Goniocladia peruviana n. sp.
Goniocladia peruviana n. sp. Chronic 1949 | |
Meekopora cf. prosseri Ullrich 1890 |