AMNH298, Bed 44, Pasaje-Picchu Section 8: Asselian - Sakmarian, Peru

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea
Crinoidea indet. Miller 1821
Stems and rare plates
Bivalvia - Pectinida - Heteropectinidae
Aviculopecten crassispinosus Chronic 1949
Rare category
recombined as Cassianoides crassispinosus
Bivalvia - Pectinida - Streblochondriidae
Streblochondria sp. Newell 1938
Rare category
Strophomenata - Productida - Echinoconchidae
Juresania hispida Chronic 1949
Common category
Strophomenata - Orthotetida - Derbyiidae
Derbyia buchi (d'Orbigny 1842)
Rare category
Rhynchonellata - Spiriferinida - Reticulariinidae
Reticulariina fruticosa n. sp. Chronic 1949
Abundant category
(8 measurements)
Rhynchonellata - Spiriferinida - Punctospiriferidae
Punctospirifer adstrictus n. sp. Chronic 1949
Abundant category
(10 measurements)
Rhynchonellata - Athyridida - Neoretziidae
Hustedia meridionalis Chronic 1949
Abundant category
(30 measurements)
Rhynchonellata - Athyridida - Athyrididae
Composita subtilita (Hall 1852)
Abundant category
n. ssp. peruviana (32 measurements)
Rhynchonellata - Terebratulida - Dielasmatidae
Dielasma scitulum Chronic 1949
Rare category
Rhynchonellata - Rhynchonellida - Wellerellidae
Wellerella osagensis (Shumard and Swallow 1858)
Common category
n. ssp. peruviana (18 measurements)
Stenolaemata - Cryptostomata - Septoporidae
Silvaseptopora n. gen. incaica Chronic 1949
Common category
recombined as Septopora incaica
see common names

Geography
Country:Peru State/province:Apurimac
Coordinates: 13.6° South, 73.1° West (view map)
Paleocoordinates:27.7° South, 50.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Permian Epoch:Cisuralian
Key time interval:Asselian - Sakmarian
Age range of interval:298.90000 - 290.10000 m.y. ago
Stratigraphy
Geological group:Copacabana
Local section:8, Pasaje-Picchu Local bed:44
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: 125 feet thick.
Lithology and environment
Primary lithology:shelly/skeletal,gray lithified "limestone"
Includes fossils?Y
Lithology description: Limestone, massive, light gray, weathers rough. Partially a bryozoan reef.
Environment:marine indet.
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,chemical,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:41358
Authorizer:D. Bottjer Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2004-07-13 16:46:57 Last modified:2017-05-23 16:34:15
Access level:the public Released:2004-07-13 16:46:57
Creative Commons license:CC BY
Reference information

Primary reference:

11104. 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]