Bajada del Agrio, Shell Bed A, Neuquen, Argentina: Late/Upper Valanginian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Polychaeta
- Sabellida
- Serpulidae
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Parsimonia antiquata
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Cephalopoda
- Ammonitida
- Neocomitidae
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Neocomites sp.
Uhlig 1905
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya gigantea
(Sowerby 1836)
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea gurgitis
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Bivalvia
- Cardiida
- Veneridae
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Aphrodina quintucoensis
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Bivalvia
- Carditida
- Astartidae
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Eriphyla argentina
Burckh and Weaver 1907
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Bivalvia
- Trigoniida
- Myophorellidae
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Steinmanella pehuenmapuensis
Leanza 1998
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Bivalvia
- Trigoniida
- Megatrigoniidae
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Pterotrigonia (Rutitrigonia) coihuicoensis
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| Pterotrigonia (R.) coihuicoensis | ||||||||||
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Bivalvia
- Trigoniida
- Trigoniidae
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Trigonia carinata
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Bivalvia
- Ostreida
- Bakevelliidae
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Gervillella aviculoides
(Sowerby 1814)
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Bivalvia
- Ostreida
- Gryphaeidae
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Aetostreon sp.
Bayle 1878
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| spelled with current rank as Exogyra (Aetostreon) | ||||||||||
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Amphidonte (Ceratostreon) sp.
(Bayle 1878)
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| original and current combination Ceratostreon | ||||||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea gabrielis
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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: | 139.80000 - 132.60000 m.y. ago |
Stratigraphy
| Formation: | Bajada del Agria | Local bed: | 2 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Middle facies shell bed A, Neocomites Subzone | |||||
Lithology and environment
| Primary lithology: | fine,medium,yellow lithified sandstone |
| Secondary lithology: | gray lithified mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Environment: | shoreface |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 44679 | ||
| Authorizer: | W. Kiessling | Enterer: | W. Kiessling |
| Modifier: | W. Kiessling | Research group: | marine invertebrate |
| Created: | 2004-09-16 11:15:15 | Last modified: | 2004-09-17 03:48:33 |
| Access level: | the public | Released: | 2004-09-16 11:15:15 |
| 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] |