Tan Lac Formation, Song Da Basin, NW Vietnam: Olenekian, Vietnam
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ceratitida
- Tirolitidae
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Tirolites sp.
Mojsisovics 1879
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Bivalvia
- Pectinida
- Entoliidae
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Entolium discites
(Schlotheim 1820)
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| ssp. microtis | ||||||||||
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Bivalvia
- Trigoniida
- Myophoriidae
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Neoschizodus laevigatus
(Ziethen 1830)
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| ssp. elongatus | ||||||||||
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Costatoria costata
(Zenker 1833)
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| see common names | ||||||||||
Geography
| Country: | Vietnam |
| Coordinates: | 21.5° North, 104.0° East (view map) |
| Paleocoordinates: | 2.7° North, 94.0° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | basin |
Time
| Period: | Triassic | Epoch: | Early/Lower Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Olenekian | ||
| Age range of interval: | 251.20000 - 247.20000 m.y. ago |
Stratigraphy
| Formation: | Tan Lac | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: 800-900 m thick. | |||||
Lithology and environment
| Primary lithology: | tuffaceous "mixed carbonate-siliciclastic" |
| Secondary lithology: | green marl |
| Includes fossils? | Y |
| Lithology description: Tuffaceous sandstone, tuffite, red siltstone, sandstone, greenish marl, clayish limestone. Marls contain fossils. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 44762 | ||
| Authorizer: | D. Bottjer | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-09-17 09:59:13 | Last modified: | 2004-09-17 12:59:13 |
| Access level: | the public | Released: | 2004-09-17 09:59:13 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11693. | V. Khuc. 2000. The Triassic of Indochina Peninsula and its interregional correlation. Permian-Triassic Evolution of Tethys and Western Circum-Pacific 221-233 [D. Bottjer/M. Clapham/M. Clapham] |