Arroyo Malo main section, sample 18: Rhaetian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Limidae
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Pseudolimea riccardii
Damborenea 2012
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Bivalvia
- Pectinida
- Pectinidae
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? Praechlamys cf. valoniensis
(Defrance 1825)
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| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Mendoza |
| Coordinates: | 34.8° South, 69.9° West (view map) | ||
| Paleocoordinates: | 40.5° South, 29.3° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Rhaetian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Rhaetian | ||
| Age range of interval: | 208.50000 - 201.40000 m.y. ago |
Stratigraphy
| Formation: | Arroyo Malo | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The report of Choristoceras cf. marshi Hauer from some levels of this sequence (Riccardi & Iglesia Llanos, 1999; Riccardi, 2008c) supports a late Rhaetian age for that part of the succession. Most of the fauna described here was found between 10 and 80 m below the main level with Choristoceras. | |||||
Lithology and environment
| Primary lithology: | planar lamination lithified mudstone |
| Environment: | prodelta |
| Geology comments: Mainly fandeltaic facies with planar laminated mudstones, fine sandstones and conglomeratic lenses deposited by low- and high-density turbidity currents and debris flows. | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MLP |
| Collection method comments: The material described here was collected over many years from different fossiliferous levels of the Arroyo Malo Formation during several field seasons. | |
Metadata
| Database number: | 132726 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2012-08-25 09:44:49 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | the public | Released: | 2012-08-25 09:44:49 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 42739. | S. E. Damborenea and M. O. Manceñido. 2012. Late Triassic bivalves and brachiopods from southern Mendoza, Argentina. Revue de Paléobiologie, Genève, vol. spéc 11:317-344 [M. Clapham/M. Clapham] |