Genus
Valid Extinct

Phuwiangosaurus

Martin et al. 1994

Phuwiangosaurus is a genus of titanosauriform dinosaur from the Early Cretaceous (Valanginian-Hauterivian) Sao Khua Formation of Thailand. The type species, P. sirindhornae, was described by Martin, Buffetaut, and Suteethorn in a 1993 press release and was formally named in 1994. The species was named to honor Princess Maha Chakri Sirindhorn of Thailand, who was interested in the geology and palaeontology of Thailand, while the genus was named after the Phu Wiang area, where the fossil was discovered. The precise affinities of Phuwiangosaurus among titanosauriform sauropods are uncertain, though several studies have classified it as a euhelopodid.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
15
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Phuwiangosaurus
click to enlarge
fossil femur of Phuwiangosaurus sirindhornae, an extinct sauropod © Ghedoghedo · CC BY-SA 3.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Saurischia Unranked clade
›
Sauropodomorpha Unranked clade
›
Massopoda Unranked clade
›
Sauropodiformes Unranked clade
›
Sauropoda Unranked clade
›
Gravisauria Unranked clade
›
Eusauropoda Unranked clade
›
Neosauropoda Unranked clade
›
Macronaria Unranked clade
›
Titanosauriformes Unranked clade
›
Somphospondyli Unranked clade
›
Euhelopodidae Unranked clade
›
Phuwiangosaurus Genus
Measurements
Length
18,7 m ⓘ
Phuwiangosaurus sirindhornae  
Mass
11 000 kg ⓘ
Phuwiangosaurus sirindhornae  
Fossil sites 15 geolocated sites
Distribution
Top countries
🇹🇭 Thailand
15
Geological formations
Sao Khua
14
Khok Kruat
1
Temporal distribution
Aptian (121.4–113.2 Ma)
1
Barremian (125.77–121.4 Ma)
14
Species (1)
Phuwiangosaurus sirindhornae 126 Ma
Images 2
Bibliography
Original description
V. Martin, E. Buffetaut, and V. Suteethorn. 1994. A new genus of sauropod dinosaur from the Sao Khua Formation (Late Jurassic or Early Cretaceous) of northeastern Thailand. Compte Rendus de l'Academie des Sciences, Paris, série IIa 319:1085-1092
Bibliography (7)
A. Samathi, S. Suteethorn, and T. Boonjarern, K. Sutcha, V. Suteethorn. 2024. Dinosaur fauna from the Lower Cretaceous of Phu Kao-Phu Phan Kham, northeastern Thailand: a review and update. Palaeoworld 33(2):420–438 DOI ↗
P. Chanthasit, S. Suteethorn, and W. Naksri, H. Tong, K. Wongko, T. Sonoda. 2019. New vertebrate fossil site from the Early Cretaceous Sao Khua Formation, Sakon Nakhon Province, northeastern Thailand. Open Journal of Geology 9:619-622 DOI ↗
N. Boonchai, P. J. Grote, and P. Jintasakul. 2009. Paleontological parks and museums and prominent fossil sites in Thailand and their importance in the conservation of fossils. PaleoParks - The Protection and Conservation of Fossil Sites Worldwide. Carnets de Géologie/Notebooks on Geology, Book 2009/03, Brest Chapter 07:75-95
E. Buffetaut, V. Suteethorn, and J. Le Loeuff, G. Cuny, H. Tong, S. Khansubha. 2002. A review of the sauropod dinosaurs of Thailand. The Symposium on Geology of Thailand, Bangkok, 26-31 August 2002
V. Martin, V. Suteethorn, and E. Buffetaut. 1999. Description of the type and referred material of <i>Phuwiangosaurus sirindhornae</i> Martin, Buffetaut and Suteethorn, 1994, a sauropod from the Lower Cretaceous of Thailand. Oryctos 2:39-91
V. Suteethorn, V. Martin, and E. Buffetaut, S. Triamwichanon, Y. Chaimanee. 1995. A new dinosaur locality in the Lower Cretaceous of northeastern Thailand. Compte Rendus de l'Academie des Sciences, Paris, série IIa 321:1041-1047
V. Martin, E. Buffetaut, and V. Suteethorn. 1994. A new genus of sauropod dinosaur from the Sao Khua Formation (Late Jurassic or Early Cretaceous) of northeastern Thailand. Compte Rendus de l'Academie des Sciences, Paris, série IIa 319:1085-1092