Upper Zorritas Formation, Chile: Tournaisian, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Chilenochonetes anna n. gen., n. sp.
Isaacson and Dutro 1999
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7 specimens | ||||||
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Strophomenata
- Orthotetida
- Schuchertellidae
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"Schuchertella" sp.
Girty 1904
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1 specimen | ||||||
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Rhynchonellata
- Spiriferinida
- Syringothyrididae
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Pseudosyrinx sp.
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1 specimen | ||||||
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Septosyringothyris covacevichi n. sp.
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5 specimens | ||||||
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? Septosyringothyris sp.
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5 specimens | ||||||
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Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
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Paurorhyncha chavelensis
(Amos 1958)
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9 specimens | ||||||
| recombined as Azurduya chavelensis | |||||||
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Cephalopoda
- Prolecanitida
- Prolecanitidae
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Eocanites sp.
Librovitch 1957
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Cephalopoda
- Goniatitida
- Prionoceratidae
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Imitoceras sp.
Schindewolf 1923
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Gastropoda
- Bellerophontida
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Bellerophon sp.
de Montfort 1808
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= Bellerophontoidea indet.
M'Coy 1851
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Wagner 2023 | ||||||
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Bivalvia
- Myalinida
- Myalinidae
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Posidoniella sp.
Koninck 1885
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Scyphozoa
- Conulariida
- Conulariidae
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Paraconularia sp.
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unclassified
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Zoophycos sp.
(Massalongo 1855)
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| see common names | |||||||
Geography
| Country: | Chile |
| Coordinates: | 24.5° South, 69.5° West (view map) |
| Paleocoordinates: | 64.4° South, 76.8° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
Time
| Period: | Carboniferous | Epoch: | Mississippian |
| Stage: | Tournaisian | 10 m.y. bin: | Carboniferous 1 |
| Key time interval: | Tournaisian | ||
| Age range of interval: | 358.90000 - 346.70000 m.y. ago |
Stratigraphy
| Formation: | Zorritas | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: fossils collected from unnamed upper member of the Zorritas Formation
collection is a composite of 2 sections near the towns of Zorritas and El Salto | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Secondary lithology: | lithified "shale" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: fossils were collected from siliclastic distribuary channels and prodelta facies. | |
| Environment: | deltaic indet. |
| Geology comments: depositional setting described as "high-stress environment in a clastic,nearshore setting" although in a table the infered paleoenvironment is categorized either as "delta platform distributary channels" or "interdistributary channels and prodeltas" | |
Taphonomy
| Modes of preservation: | mold/impression,trace |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | some |
| Disassociated major elements: | some |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | UNSM |
Metadata
| Database number: | 34753 | ||
| Authorizer: | N. Heim, P. Wagner | Enterer: | N. Heim, P. Wagner |
| Modifier: | N. Heim | Research group: | marine invertebrate |
| Created: | 2003-09-22 10:27:55 | Last modified: | 2004-09-13 17:54:38 |
| Access level: | the public | Released: | 2003-09-22 10:27:55 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 9260. | P. E. Isaacson and J. T. Dutro. 1999. Lower Carboniferous brachiopods from Sierra de Almeida, northern Chile. Journal of Paleontology 73(4):625-633 [N. Heim/N. Heim/N. Heim] |
Secondary references:
| 9042 | P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner] |