AMNH291, Bed 16, Mameura, Rio Vilcanota section 2 (Permian to of Peru)

Where: Cusco, Peru (14.4° S, 71.1° W: paleocoordinates 29.5° S, 48.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Copacabana Group, Asselian to Asselian (298.9 - 290.1 Ma)

• 96 feet thick.

• group of beds-level stratigraphic resolution

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

• Shale, black, fissile, with interbedded thin limestones, one near the middle and one at the base containing silicified brachiopods.

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 41343: authorized by David Bottjer, entered by Matthew Clapham on 13.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Euomphalina - Omphalotrochidae
Omphalotrochus obtusispira Shumard 1859 snail
Stenolaemata
 Cystoporida - Hexagonellidae
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Stems and rare plates
Strophomenata
 Productida - Echinoconchidae
Juresania hispida Chronic 1949
 Productida - Productidae
"Marginifera capaci" = Kozlowskia capaci
"Marginifera capaci" = Kozlowskia capaci d'Orbigny 1842
 Orthotetida - Derbyiidae
Derbyia buchi d'Orbigny 1842
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia sicuaniensis Chronic 1949
 Athyridida - Athyrididae
Composita subtilita Hall 1852
n. ssp. peruviana
 Spiriferida - Trigonotretidae
"Neospirifer condor" = Gypospirifer condor
"Neospirifer condor" = Gypospirifer condor d'Orbigny 1842
 Spiriferida - Elythidae
Phricodothyris guadalupensis Shumard 1859
n. ssp. peruensis
 Rhynchonellida - Wellerellidae
Wellerella osagensis Shumard and Swallow 1858
n. ssp. peruviana
 Orthida - Rhipidomellidae
Rhipidomella cora d'Orbigny 1842