USNM806b, Cerros de los Monos, El Antimonio, Sonora: Wordian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Lophophyllidae
Lophophyllidium sp. Grabau 1928
Fairly common category
Strophomenata - Productida
Marginifera informal sp. 2 Waagen 1884
Rare category
Strophomenata - Productida - Paucispiniferidae
Liosotella subrugosa Cooper 1953
Rare category
Strophomenata - Productida - Echinoconchidae
Waagenoconcha montpelierensis (Girty 1910)
Rare category
synonym of Bathymyonia nevadensis
Rhynchonellata - Rhynchonellida - Wellerellidae
Wellerella lemasi Cooper 1953
Common category
Subspecies "minor" (1 measurement)
Rhynchonellata - Spiriferinida - Reticulariinidae
Spiriferellina sonorensis n. sp. Cooper 1953
Common category
recombined as Reticulariina sonorensis
(1 measurement)
Rhynchonellata - Athyridida - Neoretziidae
Hustedia meekana (Shumard 1858)
Fairly common category
(2 measurements)
    = Hustedia shumardi Torres-Martínez et al. 2016
Torres-Martínez et al. 2016
Rhynchonellata - Athyridida - Athyrididae
Composita cf. grandis Cooper 1953
Very rare category
Rhynchonellata - Terebratulida - Dielasmatidae
Dielasma sp. King 1856
Rare category
Rhynchonellata - Terebratulida - Cryptonellidae
Heterelasma contrerasi Cooper 1953
Rare category
(1 measurement)
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 3
Key time interval:Wordian
Age range of interval:268.80000 - 265.10000 m.y. ago
Stratigraphy
Formation:Antimonio Local bed:Spiriferellina Zone
Stratigraphy comments: "Monos Beds"; Spiriferellina Zone is uppermost limestone beds
Lithology and environment
Primary lithology:blue cherty/siliceous "limestone"
Lithology description: Purer, bluish limestone with abundant dark brown nodular masses of chert
Environment:marine indet.
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:40810
Authorizer:D. Bottjer, M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2004-07-01 11:20:34 Last modified:2004-07-01 16:35:25
Access level:the public Released:2004-07-01 11:20:34
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]

Secondary references:

61293 M. A. Torres-Martínez, F. Sour-Tovar, and R. Barragán. 2016. Permian (Leonardian) brachiopods from Paso Hondo Formation, Chiapas, southern Mexico. Paleobiogeographical implications. Journal of South American Earth Sciences 71:71-81 [M. Clapham/M. Clapham/M. Clapham]