AMNH301, Bed 38a, Rasuvilca Hills section 9, Pajege Canyon (Permian to of Peru)

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

• Limestone, blue-gray.

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

Rostroconchia
  -
Conocardium sp. Bronn 1835
Juveniles?
Bivalvia
 Carditida - Astartidae
Astartella nasuta Girty 1909 clam
Gastropoda
 Cyrtoneritimorpha - Orthonychiidae
Orthonychia pajerensis n. sp. Chronic 1949 snail
 Trochonematoidea - Trochonematidae
Trochonematidae indet. von Zittel 1895 snail
 Euomphalina - Omphalotrochidae
Omphalotrochus obtusispira Shumard 1859 snail
 Euomphalina - Euomphalidae
Amphiscapha peruviana Chronic 1949 snail
 Euomphalina - Anomphalidae
Anomphalus sp. Meek and Worthen 1866 snail
 Prosobranchia - Goniasmatidae
? Goniasma "sp. 2" Tomlin 1930 snail
 Prosobranchia - Orthonematidae
? Orthonema sp. Meek and Worthen 1862 snail
 Prosobranchia - Pseudozygopleuridae
Pseudozygopleura spp. Knight 1930 snail
 Bellerophontida - Bellerophontidae
? Retispira sp. Knight 1945 snail
 Murchisoniina - Gosseletinidae
Peruvispira delicata n. gen. Chronic 1949 snail
? Ananias sp. Knight 1945 snail
 Murchisoniina - Soleniscidae
"Strobeus ? regularis" = Soleniscus regularis, Strobeus sp.
"Strobeus ? regularis" = Soleniscus regularis Cox 1857 snail
Strobeus sp. de Koninck 1881 snail
Stenolaemata
 Fenestrida - Septoporidae
"Silvaseptopora incaica n. gen." = Septopora incaica
"Silvaseptopora incaica n. gen." = Septopora incaica Chronic 1949
 Fenestrida - Polyporidae
 Cystoporida - Goniocladiidae
Goniocladia peruviana n. sp. Chronic 1949
 Cystoporida - Hexagonellidae
Strophomenata
 Productida - Echinoconchidae
Waagenoconcha humboldti d'Orbigny 1842
 Orthotetida - Schuchertellidae
Kiangsiella pinguis n. sp. Chronic 1949
Rhynchonellata
 Athyridida - Neoretziidae
Hustedia meridionalis Chronic 1949
 Athyridida - Athyrididae
Cleiothyridina intonsa n. sp. Chronic 1949
 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 bidentata Girty 1909
n. ssp. parva
 Rhynchonellida - Rhynchoporidae