Graua Limestone: Bed 6: Early Aptian, Ethiopia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cyclamminidae
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Choffatella decipiens
Schlumberger 1905
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Bivalvia
- Ostreida
- Gryphaeidae
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Exogyra conica
(Sowerby 1813)
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Bivalvia
- Ostreida
- Ostreidae
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Geography
| Country: | Ethiopia |
| Coordinates: | 9.1° North, 41.8° East (view map) |
| Paleocoordinates: | 18.9° South, 37.1° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Barremian | ||
| Key time interval: | Early Aptian | ||
| Age range of interval: | 121.4 - 119.5 m.y. ago |
Stratigraphy
| Formation: | Amba Aradam | Member: | Graua Limestone |
| Local order: | bottom to top |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | burrows lithified cherty/siliceous "limestone" |
| Includes fossils? | Y |
| Lithology description: 2 m, marly limestone, burrowed and wavy bedded | |
| Environment: | shallow subtidal indet. |
| Glacial or sequence phase: | transgressive |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 46589 | ||
| Authorizer: | L. Ivany | Enterer: | P. Wall |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-01-20 10:05:05 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-01-20 10:05:05 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 12436. | A. Bosellini, A. Russo, and R. Schroeder. 1999. Stratigraphic evidence for an Early Aptian sea-level fluctuation: the Graua Limestone of south-eastern Ethiopia. Cretaceous Research 20:783-791 [L. Ivany/P. Wall/P. Wall] |