Where: Junin, Peru (11.4° S, 75.7° W: paleocoordinates 21.9° S, 47.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Mitu Group, Artinskian to Artinskian (290.1 - 272.3 Ma)
• Age of Mitu Group is not well-constrained, overlies Asselian-early Artinskian Copacabana Group unconformably. Bed is 108 feet thick
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, pebbly shale and lithified 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 41386: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Crurithyris planoconvexa Shumard 1855 | |
Strophomenata | |
"Marginifera capaci" = Kozlowskia capaci
"Marginifera capaci" = Kozlowskia capaci d'Orbigny 1842 |