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)
• 45 feet thick, fusilines and Omphalotrochus at 30 ft, brachiopods at 35 ft (56b?).
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, shelly/skeletal 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 41376: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Reticulariina constricta Chronic 1949 | |
Cleiothyridina intonsa Chronic 1949 | |
Dielasma scitulum Chronic 1949 | |
Enteletes gibbosus n. sp.
Enteletes gibbosus n. sp. Chronic 1949 | |
Bivalvia | |
Septimyalina cf. burmai Newell 1942 clam | |
Edmondia sp. de Koninck 1841 clam | |
Gastropoda | |
Anomphalus sp. Meek and Worthen 1866 snail | |
Pseudozygopleura spp. Knight 1930 snail | |
Goniasma "sp. 1" Tomlin 1930 snail | |
Trochonematidae indet. von Zittel 1895 snail | |
Euconospira sp. Ulrich and Scofield 1897 snail | |
Crinoidea | |
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