Nam Nao National Park: Norian - Rhaetian, Thailand

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Prosauropoda indet. Huene 1920
1 specimen
distal end of fused ischia; palaeontological collection of the Department of Mineral Resources, Bangkok, no. NN1-1
    = Sauropodomorpha indet. Huene 1932
Buffetaut et al. 2000
see common names

Geography
Country:Thailand State/province:Phetchabun
Coordinates: 16.8° North, 101.8° East (view map)
Paleocoordinates:21.1° North, 92.6° East
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
10 m.y. bin:Triassic 4
Key time interval:Norian - Rhaetian
Age range of interval:228.00000 - 201.30000 m.y. ago
Stratigraphy
Formation:Nam Phong
Stratigraphic resolution:bed
Stratigraphy comments: Nam Phong Formation has been dated as late Norian–Rhaetian on the basis of palynomorphs (Racey et al. 1996. Journal of Petroleum Geology 19: 5–40), although new data based on subsurface observations and palynology suggests that the formation should be split into lower and upper parts, and that the upper part may be Jurassic in age, and possibly even Late Jurassic (Racey & Goodall 2009. Geol. Soc. Lond. Spec. Publ. 315: 69-83). At outcrop, only Norian-Rhaetian palynomorphs have yet beeen recovered, and so a Late Triassic age is retained for the vertebrate remains at present
Lithology and environment
Primary lithology:gray,red siltstone
Secondary lithology:brown,red,yellow sandstone
Lithology description: "greyish-red to pale red siltstones and resistant beds of pale red to pale yellowish brown sandstone and conglomerate."
Environment:fluvial-lacustrine indet.
Geology comments: "The succession is dominated by braided and meandering channels interbedded with lacustrine or floodplain sequences" (Racey & Goodall 2009. Geol. Soc. Lond. Spec. Publ. 315: 69-83)
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Disassociated major elements:all
Fragmentation:frequent
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:35967
Authorizer:M. Carrano, R. Butler Enterer:M. Carrano, R. Butler
Modifier:M. Carrano Research group:vertebrate
Created:2004-01-12 08:28:53 Last modified:2021-06-15 12:56:44
Access level:the public Released:2004-01-12 08:28:53
Creative Commons license:CC BY
Reference information

Primary reference:

9661. E. Buffetaut, V. Martin, N. Sattayarak and V. Suteethorn. 1995. The oldest known dinosaur from southeast Asia: a prosauropod from the Nam Phong Formation (late Triassic) of northeast Thailand. Geological Magazine 132(6):739-742 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

62069 E. Buffetaut. 1997. Southeast Asian dinosaurs. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 689-691 [M. Carrano/M. Carrano]
36763ETE E. Buffetaut. 1998. The succession of dinosaur assemblages in Thailand. In A. M. G. de Carvalho, A. M. Andrade, V. F. dos Santos, J. Cascalho, R. Taborda, (eds.), I Encontro Internacional sobre Paleobiologia dos Dinossáurios. Museu Nacional de História Natural, Lisboa 89-97 [M. Carrano/M. Carrano]
31097ETE E. Buffetaut, V. Suteethorn, V. Martin, H. Tong, Y. Chaimanee and S. Triamwichanon. 1995. New dinosaur discoveries in Thailand. International Conference on Geology, Geotechnology and Mineral Resources of Indochina (Geo-Indo '95), 22-25 November 1995, Khon Kaen, Thailand 157-161 [M. Carrano/M. Carrano]
13033ETE,5% 52900E. Buffetaut, V. Suteethorn, G. Cuny, H. Tong, J. Le Loeuff, S. Khansubha, and S. Jongautchariyakul. 2000. The earliest known sauropod dinosaur. Nature 407:72-74 [M. Carrano/M. Carrano/J. Alroy]
77164 E. Buffetaut, V. Suteethorn, and H. Tong. 2006. Dinosaur assemblages from Thailand: a comparison with Chinese faunas. In J.-C. Lü, Y. Kobayashi, D. Huang, & Y.-N. Lee (eds.), Papers from the 2005 Heyuan International Dinosaur Symposium 19-37 [M. Carrano/M. Carrano]