Bajada del Agrio - Basal facies, Neuquen, Argentina: Late/Upper Valanginian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Mytilida
- Mytilidae
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Modiolus cf. subsimplex
(d'Orbigny 1850)
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Bivalvia
- Ostreida
- Pinnidae
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Pinna robinaldina
d'Orbigny 1844
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea gabrielis
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Bivalvia
- Trigoniida
- Myophorellidae
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Steinmanella transitoria
Steinmann 1881
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Steinmanella pehuenmapuensis
Leanza 1998
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see common names |
Geography
Country: | Argentina |
Coordinates: | 38.0° South, 69.8° West (view map) |
Paleocoordinates: | 37.0° South, 32.9° West |
Basis of coordinate: | estimated from map |
Geographic resolution: | small collection |
Time
Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
Stage: | Valanginian | 10 m.y. bin: | Cretaceous 1 |
Key time interval: | Late/Upper Valanginian | ||
Age range of interval: | 140.20000 - 136.40000 m.y. ago |
Stratigraphy
Formation: | Bajada del Agria | Local bed: | 1 | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Basal facies |
Lithology and environment
Primary lithology: | gray lithified mudstone |
Secondary lithology: | concretionary lithified "limestone" |
Includes fossils? | Y |
Includes fossils? | Y |
Environment: | transition zone/lower shoreface |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some macrofossils |
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 44678 | ||
Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
Modifier: | W. Kiessling | Research group: | marine invertebrate |
Created: | 2004-09-16 11:07:50 | Last modified: | 2004-09-17 03:50:42 |
Access level: | the public | Released: | 2004-09-16 11:07:50 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
11681. | D. G. Lazo. 2003. Taxonomy, facies relationships and palaeobiology of bakevelliid bivalves from the Lower Cretaceous of west-central Argentina . Cretaceous Research 24(6):765-788 [W. Kiessling/W. Kiessling/W. Kiessling] |