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: "Antarctosaurus" brasiliensis

Length*: | 13.5 m | 44.3 ft |
Weight*: | 12 t | 26,455 lb |
Speed: | 28 km/h | 17 mph |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Turonian-Santonian
Years: 93.9–83.6 Ma
Details
Status: nomen dubium
Author: Arid & Vizzotto
Year: 1971
Distribution
Area: South America
Country: Brazil
Region: São Paulo
Formation: Adamantina
Sources
Material: Partial left femur, partial right humerus and incomplete dorsal vertebra.
References: Arid, F.M. & Vizotto, L.D. (1971). Antarctosaurus brasiliensis, um novo saurópode do Crétaceo superior do sul do Brasil.