Na Duong Coal Mine (base of lower lignite seam): Bartonian - Priabonian, Vietnam
collected 2012, 2013
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Anthracotheriidae
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Bothriogenys langsonensis n. sp.
Ducrocq et al. 2015
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| ND-2013-03-14-4 - type; referred material: ND-2013-03-13-6, ND- 2013-03-14-2, ND-2013-03-13-4 and ND-2012-02-18-1 | ||||||||||
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Bothriogenys vietnamensis n. sp.
Ducrocq et al. 2015
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| ND-2012-Pha 1 - type; referred material: ND-2012-02-17-1, ND-2012-Pha 2, ND-2012-02-16-1, ND-2013-03-14-1, ND-2012-02-17-2, ND-2013-03-13-2 and ND 2013-03-14-3 | ||||||||||
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Anthracokeryx naduongensis n. sp.
Ducrocq et al. 2015
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| ND-2012-02-15-1 - type; referred material: ND-2012-02-16-2, ND-2013-03-13-3 and ND-2013-03-15-1 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Vietnam | State/province: | Lang Son | County: | Loc Binh |
| Coordinates: | 21.8° North, 106.1° East (view map) | ||||
| Paleocoordinates: | 21.6° North, 105.0° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 3 | ||
| Key time interval: | Bartonian - Priabonian | ||
| Age range of interval: | 41.20000 - 33.90000 m.y. ago | ||
| Age estimate: | 39 to 34 Ma (unknown) |
Stratigraphy
| Formation: | Na Duong | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Attributed to the middle–late Eocene age by Bohme et al. (2013), but Ducrocq et al. (2015) argue for an early late Eocene or middle late Eocene age. Garbin et al (2019) give an upper Bartonian - late Priabonian (34-39 Ma) age.
Base of the lower lignite seam of the Na Duong Formation | |||||
Lithology and environment
| Primary lithology: | claystone |
| Secondary lithology: | lignite |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Lignitic clays | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 2012, 2013 |
Metadata
| Database number: | 176502 | ||
| Authorizer: | P. Mannion | Enterer: | P. Mannion |
| Modifier: | P. Mannion | ||
| Created: | 2016-02-15 11:50:51 | Last modified: | 2019-02-19 02:10:27 |
| Access level: | the public | Released: | 2016-02-15 11:50:51 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 58106. | S. Ducrocq, M. Benammi, O. Chavasseau, Y. Chaimanee, K. Suraprasit, P. Pha, V. Phuong, P. Phach, and J.-J. Jaeger. 2015. New anthracotheres (Cetartiodactyla, Mammalia) from the Paleogene of northeastern Vietnam: biochronological implications. Journal of Vertebrate Paleontology 35(3):e929139:1-11 [P. Mannion/P. Mannion] |