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

Group

Dinosaures

Herbivore Ground dwelling, gregarious Terrestrial

click to enlarge

The holotype anterior dorsal vertebra of Uragasaurus kalasinensis (PRC 460) in anterior (a) and posterior (b) views. Digital rendering of the specimen in anterior (c), posterior (d), right lateral (e), left lateral (f), dorsal (g), and ventral (h) views. Asterisk refers to an autapomorphic character. The blue highlight indicates the pneumatic fossa and pleurocoel. © A. Nilpanapan S. Manitkoon, V. Suteethorn & K. Lauprasert · CC BY 4.0 · Wikimedia

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Unranked clade

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Saurischia Unranked clade

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Sauropodomorpha Unranked clade

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Massopoda Unranked clade

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Sauropodiformes Unranked clade

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Sauropoda Unranked clade

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Gravisauria Unranked clade

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Eusauropoda Unranked clade

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Mamenchisauridae Unranked clade

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Uragasaurus Genus

Fossil sites 1 geolocated sites

Distribution

Top countries

🇹🇭 Thailand

Geological formations

Phu Kradung

Temporal distribution

Tithonian (149.2–143.1 Ma)

Species (1)

Uragasaurus kalasinensis 149 Ma

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)

Uragasaurus

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