Cerro Solitario, Empozada Form., Mendoza, Argentina - Tortello and Bordonaro 199: Middle Cambrian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Agnostida
- Agnostidae
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Agnostus microcephalus
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1 specimen | |||||||||
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? Kormagnostus beltensis
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1 specimen | |||||||||
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Kormagnostus seclusus
(Walcott 1884)
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14 specimens | |||||||||
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Agnostida
- Ptychagnostidae
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Ptychagnostus aculeatus
(Angelin 1851)
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3 specimens | |||||||||
| (2 cephalons, 1 pygidium, frags) | ||||||||||
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Lejopyge laevigata
(Dalman 1828)
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20 specimens | |||||||||
| (13 cephala, 7 pygidia) | ||||||||||
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Agnostida
- Spinagnostidae
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Tomagnostella exsculpta
(Angelin 1851)
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16 specimens | |||||||||
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Agnostida
- Clavagnostidae
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Clavagnostus repandus
(Westergard 1930)
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2 specimens | |||||||||
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Clavagnostus calensis
Rusconi 1950
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15 specimens | |||||||||
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Agnostida
- Diplagnostidae
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Oedorhachis typicalis
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4 specimens | |||||||||
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Diplagnostus planicauda
(Angelin 1851)
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3 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Mendoza |
| Coordinates: | 32.9° South, 68.8° West (view map) | ||
| Paleocoordinates: | 41.2° South, 126.1° West | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Miaolingian |
| 10 m.y. bin: | Cambrian 3-4 | ||
| *Period: | Middle Cambrian - Late/Upper Cambrian | *Epoch: | Late/Upper St. David's |
| *International age/stage: | Late/Upper Menevian | ||
| Key time interval: | Middle Cambrian | Zone: | L. laevigata |
| Age range of interval: | 509 - 497 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Empozada | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: JA: laevigata zone is late Middle Cambrian according to Gradstein et al. 2004 | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Secondary lithology: | lithified "shale" |
| Includes fossils? | Y |
| Lithology description: general: isolated, predominantly carbonate blocks (olistoliths). Thinly bedded limestone and black shale. | |
| Environment: | offshore shelf |
Taphonomy
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Revisions of the Carlos Rusconi collections in the Museum of Natural Sciences of Mendoza, Argentina. Includes only agnostid trilobites. | |
Metadata
| Database number: | 9811 | ||
| Authorizer: | J. Alroy, M. Patzkowsky | Enterer: | P. Borkow, J. Alroy |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2001-01-22 12:01:00 | Last modified: | 2007-02-25 21:32:09 |
| Access level: | the public | Released: | 2001-01-22 12:01:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 849. | M. F. Tortello and O. L. Bordonaro. 1997. Cambrian Agnostid trilobites from Mendoza, Argentina: A systematic revision and biostratigraphic implications. Journal of Paleontology 71(1):74-86 [M. Patzkowsky/P. Borkow] |