USNM806q, Cerros de los Monos, El Antimonio, Sonora: Wordian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Rhynchonellida - Wellerellidae
? Uncinunellina pulchra Cooper 1953
Rare category
Rhynchonellata - Rhynchonellida - Petasmariidae
Leiorhynchoidea cloudi Cooper 1953
Abundant category
see common names

Geography
Country:Mexico State/province:Sonora
Coordinates: 30.8° North, 112.6° West (view map)
Paleocoordinates:11.7° North, 40.3° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Permian Epoch:Guadalupian
Stage:Wordian 10 m.y. bin:Permian 4
Key time interval:Wordian
Age range of interval:266.90000 - 264.28000 m.y. ago
Stratigraphy
Formation:Antimonio Local bed:Leiorhynchoidea Zone
Stratigraphy comments: "Monos Beds"; Leiorhynchoidea zone is third-highest in the succession
Lithology and environment
Primary lithology:red calcareous "shale"
Lithology description: Reddish limestone shale
Environment:marine indet.
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:40838
Authorizer:D. Bottjer Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2004-07-01 13:02:17 Last modified:2004-07-01 16:55:23
Access level:the public Released:2004-07-01 13:02:17
Creative Commons license:CC BY
Reference information

Primary reference:
11030. G. A. Cooper, C. O. Dunbar, H. Duncan, A. K. Miller, and J. B. Knight. 1953. Permian fauna at El Antimonio, western Sonora, Mexico. Smithsonian Miscellaneous Collections 119(2):1-111 [D. Bottjer/M. Clapham/P. Wagner]