A2-Arroyo La Laguna, Bed 429a, San Juan: Pliensbachian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Scleractinia
- Montlivaltiidae
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? Montlivaltia sp.
Lamouroux 1821
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Bivalvia
- Trigoniida
- Myophorellidae
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? Myophorella sp.
Bayle 1878
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| see common names | |||||||
Geography
| Country: | Argentina | State/province: | San Juan |
| Coordinates: | 32.3° South, 70.0° West (view map) | ||
| Paleocoordinates: | 32.8° South, 31.1° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Pliensbachian | 10 m.y. bin: | Jurassic 2 |
| Key time interval: | Pliensbachian | ||
| Age range of interval: | 192.90000 - 184.20000 m.y. ago |
Stratigraphy
| Formation: | El Cholo | ||||
| Local section: | Arroyo La Laguna | Local bed: | 429a | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: formation also known as Puesto Araya | |||||
Lithology and environment
| Primary lithology: | calcareous sandstone |
| Secondary lithology: | sandy "limestone" |
| Lithology description: fine calcareous sandstones and sandy limestones, with tuff grains and several shell beds | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 33696 | ||
| Authorizer: | A. Miller | Enterer: | K. Layou |
| Modifier: | A. Khan | Research group: | marine invertebrate |
| Created: | 2003-08-05 13:18:38 | Last modified: | 2013-08-05 22:04:56 |
| Access level: | the public | Released: | 2003-08-05 13:18:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 3975. | S. E. Damborenea. 1987. Early Jurassic Bivalvia of Argentina: Part 1, Stratigraphical introduction and superfamilies Nuculanacea, Arcacea, Mytilacea and Pinnacea. Palaeontographica A199(1-3):23-111 [W. Kiessling/W. Kiessling] |