Obispo Fm., San Lucas, Bolivia: Arenig, Bolivia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Asaphida
- Asaphidae
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Niobides sp.
Harrington and Leanza 1957
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Megalaspis sp.
Angelin 1851
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Hoekaspis sp.
Kobayashi 1937
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Trilobita
- Olenida
- Olenidae
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Hypermecaspis sp.
Harrington and Leanza 1957
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Cephalopoda
- Ellesmerocerida
- Eothinoceratidae
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Margaritoceras sp.
Cecioni and Flower 1985
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Cephalopoda
- Ellesmerocerida
- Ellesmeroceratidae
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Pachendoceras sp.
Ulrich and Foerste 1936
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Cephalopoda
- Endocerida
- Endoceratidae
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Endoceras sp.
Hall 1847
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| see common names | |||||||
Geography
| Country: | Bolivia |
| Coordinates: | 20.0° South, 65.0° West (view map) |
| Paleocoordinates: | 33.2° South, 165.6° West (Wright 2013) |
| Geographic resolution: | local area |
Time
| Period: | Ordovician | ||
| 10 m.y. bin: | Ordovician 2-3 | ||
| *Period: | Early/Lower Ordovician | *Epoch: | Early/Lower Arenig |
| *International age/stage: | Early/Lower Arenig | ||
| Key time interval: | Arenig | ||
| Age range of interval: | 477.1 - 468 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Obispo |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | gray,red or brown lithified "shale" |
| Secondary lithology: | siltstone |
| Lithology description: dark gray cone-in-cone concretions in gray shale and siltstone intercalated with gray-brown sandstone | |
| Environment: | offshore |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete | |
Metadata
| Database number: | 8846 | ||
| Authorizer: | A. Miller | Enterer: | P. Novack-Gottshall |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2000-09-01 11:20:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2000-11-20 13:53:40 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 625. | L. Branisa. 1965. Los fosiles guias de Bolivia: I. Paleozoico. Boletin de Servicio Geologico de Bolivia. La Paz, Bolivia 6:1-282 [A. Miller/P. Novack-Gottshall/P. Wagner] |