Cuidad Victoria, JS93-79: Homerian - Gorstian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
Anthozoa indet. Ehrenberg 1834
1 specimen
tetracoral
Trilobita
Trilobita indet. Walch 1771
1 specimen
Craniata - Craniopsida - Craniopsidae
Craniops sp. Hall 1859
1 specimen
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophiella (Sulcastrophiella) sp. Harper and Boucot 1978
4 specimens
spelled with current rank as Amphistrophia (Amphistrophiella)
sgn. (Sulcastrophiella)
Strophomenata - Strophomenida - Strophonellidae
Strophoprion sp. Twenhofel 1914
1 specimen
synonym of Strophonella
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
6 specimens
Strophomenata - Orthotetida - Chilidiopsidae
Coolinia sp. Bancroft 1949
8 specimens
spelled with current rank as Fardenia (Coolinia)
Rhynchonellata - Spiriferida - Cyrtiidae
Eospirifer sp. Schuchert 1913
12 specimens
Rhynchonellata - Spiriferida - Delthyrididae
Delthyris sp. Dalman 1828
69 specimens
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
7 specimens
Rhynchonellata - Athyridida - Meristidae
Amerista sp.
3 specimens
Rhynchonellata - Athyridida - Meristellidae
Meristina sp. Hall 1867
7 specimens
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Sphaerirhynchia sp. Cooper and Muir-Wood 1951
14 specimens
Rhynchonellata - Rhynchonellida - Rhynchonellidae
Rhynchonellidae indet. Gray 1848
3 specimens
Rhynchonellata - Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
28 specimens
Rhynchonellata - Orthida - Dalmanellidae
Resserella sp. Bancroft 1928
25 specimens
Isorthis (Ovalella) sp. Walmsley and Boucot 1975
10 specimens
sgn. (Ovalella)
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina sp. Havlicek 1953
1 specimen
Rhynchonellata - Atrypida - Atrypidae
Atrypa sp. Dalman 1828
43 specimens
Stenolaemata - Cryptostomata - Fenestellidae
Fenestellidae indet. King 1850
4 specimens
Gastropoda - Euomphalina - Euomphalidae
3 specimens
see common names

Geography
Country:Mexico State/province:Tamaulipas
Coordinates: 23.8° North, 99.3° West (view map)
Paleocoordinates:25.6° South, 76.0° West
Geographic resolution:small collection
Time
Period:Silurian
10 m.y. bin:Silurian 2
*Period:Middle Silurian - Late/Upper Silurian
*International age/stage:Homerian - Gorstian
Key time interval:Homerian - Gorstian
Age range of interval:430.50000 - 425.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Canon de Caballeros Member:Upper
Stratigraphic resolution:member
Stratigraphy comments: Macropleurella and Sphaerirhynchia suggest a late Wenlock - early Ludlow age, supported by Amphistrophiella (S.) carillobravoi.
Lithology and environment
Primary lithology: lithified argillaceous,silty siltstone
Secondary lithology: sandstone
Lithology description: consists of shaley siltstone and very fine-grained sandstone and a few beds of fine-to-medium grained sandstone.
Environment:offshore
Geology comments: Upper member fauna belong to BA3 but Janius community, representing high-diversity, level bottom, moderately turbulent environments.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:5124
Authorizer:J. Alroy Enterer:M. Sommers
Research group:marine invertebrate
Created:1999-08-30 18:30:21 Last modified:2003-07-18 18:05:03
Access level:the public Released:2000-11-20 13:53:25
Creative Commons license:CC BY
Reference information

Primary reference:

212. A. J. Boucot, R. B. Blodgett, and J. H. Stewart. 1997. European province Late Silurian brachiopods from the Ciudad Victoria area, Tamaulipas, northeastern Mexico. Geological Society of America Special Paper 321:273-293 [J. Alroy/M. Sommers/P. Wagner]