Every month, 100,000 readers use the Dinosaur Database, but we receive no support from you. Developing and updating the database requires a lot of work. Therefore, as of September 1, 2025, the database will be closed. If you want it to remain open and be updated, please support us via the "Buy us a coffee" button available on every page or via the Support page.
Dinosaur: Isanosaurus attavipachi

Length*: | 8.3 m | 27.2 ft |
Weight*: | 1.3 t | 2,866 lb |
*The largest known specimen
Period
Epoch: Late Triassic
Stage: Late Norian-Rhaetian
Years: 227–201.4 Ma
Details
Status: valid
Author: Buffetaut et al.
Year: 2000
Distribution
Area: Asia
Country: Thailand
Region: Chaiyaphum
Formation: Nam Phong
Locations
Sources
Material: Vertebrae, neural arch, chevron bones, fragmentary ribs, right sternal plate, right scapula and left femur.
References: Buffetaut, E., Suteethorn, V., Cuny, G., Tong, H., Le Loeuff, J., Khansubha, S., & Jongautchariyakul, S. (2000). The earliest known sauropod dinosaur.