Llallagua Formation, SW Bolivia: Llandovery, Bolivia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Artiopoda
- Phacopida
- Dalmanitidae
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Dalmanites sp.
Barrande 1852
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Rhynchonellata
- Orthida
- Orthidae
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Dalejina sp.
Havlicek 1953
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanellidae indet.
Schuchert 1913
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Rhynchonellata
- Pentamerida
- Syntrophiidae
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Rhynchonellata
- Atrypida
- Atrypidae
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| species name in quotes | ||||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena rhomboidalis
(Wahlenberg 1818)
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| species name in quotes | ||||||||||
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Leptaena cf. rhomboidalis
(Wahlenberg 1818)
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Plectodonta sp.
Kozlowski 1929
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Strophomenata
- Strophomenida
- Chonetidae
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Strophomenata
- Strophomenida
- Strophochonetidae
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Protochonetes sp.
Muir-Wood 1962
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Geography
| Country: | Bolivia |
| Coordinates: | 17.8° South, 64.8° West (view map) |
| Paleocoordinates: | 61.4° South, 170.4° East (Wright 2013) |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Llandovery |
| 10 m.y. bin: | Silurian 1 | *Epoch: | Late/Upper Llandovery |
| Key time interval: | Llandovery | ||
| Age range of interval: | 443.1 - 432.9 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Llallagua | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: age based in part on occurrence of Monograptus turriculatus in overlying Kirusillas Formation | |||||
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Environment: | marine indet. |
| Geology comments: "The Llallagua fauna belongs to the North Silurian Realm rather than to the Malvinokaffric Realm. This surprising conclusion suggests that a warm-water, near-shore currfent permitted the N. Hemisphere benthos to exist during the lat Llandovery in N and C Bolivia in about the BA 3 to 5 position." | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 25084 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2002-08-27 15:55:12 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-08-27 15:55:12 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 7031. | G. Laubacher, A. J. Boucot, and J. Gray. 1982. Additions to Silurian stratigraphy, lithofacies, biogeography and paleontology of Bolivia and southern Peru. Journal of Paleontology 56(5):1138-1170 [M. Foote/M. Foote/M. Foote] |