Uragasaurus fossil map
Where fossils of Uragasaurus have been found, shown on the Earth as it looked about 145 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 145 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Sauropods & prosauropods |
|---|---|
| Lived | 149.2–137.05 million years ago (Tithonian to Berriasian) |
| Periods | Jurassic, Cretaceous |
| Family | Mamenchisauridae |
| Named by | Nilpanapan et al. 2026 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | Thailand |
| Rock formations | Phu Kradung |
About Uragasaurus
Uragasaurus (lit. 'serpent lizard') 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.
Text in “About” is quoted from the Wikipedia article Uragasaurus (revision 1365168268), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q140464483.