List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Collinia sp.
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41 specimens | |||||||||
Gastropoda
- Bellerophontida
- Tropidodiscidae
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Tropidodiscus sp.
Meek and Worthen 1866
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not counted | ||||||||||
Gastropoda
- Euomphalina
- Euomphalidae
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Poleumita sp.
Clarke and Ruedemann 1903
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not counted | ||||||||||
Euomphalopterus sp.
Roemer 1876
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not counted | ||||||||||
unclassified
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Brachiopoda indet.
Cuvier 1805
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1 specimen | |||||||||
Strophomenata
- Strophomenida
- Stropheodontidae
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Stropheodontidae indet.
Caster 1939
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1 specimen | |||||||||
Strophomenata
- Strophomenida
- Eopholidostrophiidae
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Mesopholidostrophia sp.
Williams 1950
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7 specimens | |||||||||
Strophomenata
- Strophomenida
- Strophonellidae
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Strophoprion sp.
Twenhofel 1914
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19 specimens | |||||||||
synonym of Strophonella | ||||||||||
Strophomenata
- Strophomenida
- Amphistrophiidae
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Amphistrophiella (Sulcastrophiella) sp.
Harper and Boucot 1978
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9 specimens | |||||||||
spelled with current rank as Amphistrophia (Amphistrophiella) | ||||||||||
sgn. (Sulcastrophiella) | ||||||||||
Mclearnitesella sp.
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15 specimens | |||||||||
synonym of Mclearnites | ||||||||||
Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena sp.
Dalman 1828
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20 specimens | |||||||||
Rhynchonellata
- Orthida
- Dalmanellidae
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Isorthis (Ovalella) sp.
Walmsley and Boucot 1975
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17 specimens | |||||||||
sgn. (Ovalella) | ||||||||||
Resserella sp.
Bancroft 1928
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26 specimens | |||||||||
Rhynchonellata
- Orthida
- Rhipidomellidae
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Dalejina sp.
Havlicek 1953
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8 specimens | |||||||||
Rhynchonellata
- Spiriferida
- Cyrtiidae
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Eospirifer sp.
Schuchert 1913
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6 specimens | |||||||||
Macropleura sp.
Boucot 1963
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2 specimens | |||||||||
Rhynchonellata
- Spiriferida
- Delthyrididae
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Delthyris sp.
Dalman 1828
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50 specimens | |||||||||
Rhynchonellata
- Athyridida
- Meristidae
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Amerista sp.
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1 specimen | |||||||||
Rhynchonellata
- Athyridida
- Meristellidae
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? Meristina sp.
Hall 1867
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2 specimens | |||||||||
Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira sp.
Hall 1859
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35 specimens | |||||||||
Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa sp.
Dalman 1828
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23 specimens | |||||||||
Rhynchonellata
- Rhynchonellida
- Rhynchonellidae
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Rhynchonellidae indet.
Gray 1848
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4 specimens | |||||||||
Rhynchonellata
- Rhynchonellida
- Hebetoechiidae
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Sphaerirhynchia sp.
Cooper and Muir-Wood 1951
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8 specimens | |||||||||
Craniata
- Craniopsida
- Craniopsidae
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Craniops sp.
Hall 1859
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4 specimens | |||||||||
Stenolaemata
- Cryptostomata
- Fenestellidae
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Fenestellidae indet.
King 1850
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4 specimens | |||||||||
Trilobita
- Odontopleurida
- Odontopleuridae
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Exallaspis sp. n. sp.
Ramsköld and Chatterton 1991
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2 specimens | |||||||||
see common names |
Geography
Country: | Mexico | State/province: | Tamaulipas |
Coordinates: | 23.8° North, 99.3° West (view map) | ||
Paleocoordinates: | 25.6° South, 76.1° West | ||
Geographic resolution: | small collection |
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 |
Collection method comments: "JS93-121A is the main collection. JS93-121B is a small supplemental collection from a bed 3 m E of 121A. JS93-121 includes fossils from beds at JS93-121A and from several layers within 3 m to W." |
Metadata
Database number: | 5121 | ||
Authorizer: | J. Alroy | Enterer: | M. Sommers |
Modifier: | M. Sommers | Research group: | marine invertebrate |
Created: | 1999-08-30 17:29:34 | 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] |