Pichaihue valley PHo20, Agrio Formation, Neuquén Basin, Neuquén: Early/Lower Hauterivian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Trigoniida
- Myophorellidae
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Myophorella sp.
Bayle 1878
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea sp.
Lamarck 1801
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| see common names | |||||||
Geography
| Country: | Argentina |
| Coordinates: | 37.7° South, 70.2° West (view map) |
| Paleocoordinates: | 37.3° South, 34.1° West |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Hauterivian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Early/Lower Hauterivian | ||
| Age range of interval: | 132.60000 - 125.77000 m.y. ago |
Stratigraphy
| Formation: | Agrio | Member: | Pilmatué | ||
| Local section: | Pichaihue valley | Local bed: | PHo20 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: upper part of the lower member (Pilmatué) of the Agrio Formation; Holcoptychites neuquensis zone, Holcoptychites agrioensis subzone | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Secondary lithology: | lithified siltstone |
| Lithology description: Fine to very fine sandstones and interbedded siltstones. The upper half is more silty. With oyster-rich hard siltstone and hard, pale brown fine sandstone. (11.0 m) | |
| Environment: | transition zone/lower shoreface |
| Geology comments: shoreface to offshore paleoenvironments on a storm-dominated, shallow marine ramp (PBDB coll. 50185) | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 61602 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate |
| Created: | 2006-06-21 04:13:50 | Last modified: | 2006-06-21 07:13:50 |
| Access level: | the public | Released: | 2006-06-21 04:13:49 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17755. | M. B. Aguirre-Urreta and P. F. Rawson. 2003. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: the Hauterivian genus Holcoptychites. Cretaceous Research 24(5):589-613 [W. Kiessling/U. Merkel] |