Genus
Valid Extinct

Uragasaurus

Nilpanapan et al. 2026

Uragasaurus is an extinct genus of mamenchisaurid sauropod dinosaur known from the Late Jurassic Phu Kradung Formation of Thailand. The genus contains a single species, Uragasaurus kalasinensis, known from a single dorsal (trunk) vertebra. It is the first member of the family Mamenchisauridae named from Thailand.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Uragasaurus
click to enlarge
Life reconstruction of a herd of five individuals of Uragasaurus kalasinensis inhabiting a Late Jurassic forest in Thailand, accompanied by a pair of rhamphorhynchoid pterosaurs and a metriacanthosaurid theropod. Artwork by Pakorn Chotchaiyaporn (Jæsica ẞababi). © A. Nilpanapan S. Manitkoon, V. Suteethorn & K. Lauprasert · CC BY 4.0 · Wikimedia
Uragasaurus
Uragasaurus
Uragasaurus
Uragasaurus
Uragasaurus
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
›
Mamenchisauridae Unranked clade
›
Uragasaurus Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇹🇭 Thailand
1
Geological formations
Phu Kradung
1
Temporal distribution
Tithonian (149.2–143.1 Ma)
1
Species (1)
Uragasaurus kalasinensis 149 Ma
News 2
Uragasaurus – A New Mamenchisaurid Sauropod from Thailand
bone limb vertebra Thailand fossil +4
A team of international researchers has named a remarkable new species of long-necked dinosaur from Thailand. Uragasaurus kalasinensis is the first formally described member of the Mamenchisauridae from Thailand. Although the fossil evidence consists of a single vertebra, the bone preserves a unique combination of anatomical features that enabled scientists to identify an entirely new
15/07/2026 everythingdinosaur
New Species of Long-Necked Dinosaur Identified in Thailand
New Species of Long-Necked Dinosaur Identified in Thailand
Thailand Dinosauria Mamenchisauridae Uragasaurus new species
Paleontologists working in northeastern Thailand have identified a new species of mamenchisaurid sauropod dinosaur, offering fresh evidence that a group of giant sauropods once thought to be almost exclusively East Asian also roamed mainland Southeast Asia. The post New Species of Long-Necked Dinosaur Identified in Thailand appeared first on Sci.News: Breaking Science News.
09/07/2026 sci-news
Images 5
Bibliography
Original description
A. Nilpanapan, S. Manitkoon, and V. Suteethorn, K. Lauprasert. 2026. A new mamenchisaurid sauropod from the Lower Phu Kradung Formation, Upper Jurassic of northeastern Thailand. Scientific Reports 16(1):21205:1-16 DOI ↗
Bibliography (1)
A. Nilpanapan, S. Manitkoon, and V. Suteethorn, K. Lauprasert. 2026. A new mamenchisaurid sauropod from the Lower Phu Kradung Formation, Upper Jurassic of northeastern Thailand. Scientific Reports 16(1):21205:1-16 DOI ↗