|Named By:||J. E. Powell in 1990|
|Time Period:||Late Cretaceous, 95-90 Ma|
|Location:||Argentina, Chubut Province - Bajo Barreal Formation|
|Size:||Up to ten meters long|
|Fossil(s):||Remains of three individuals, one of which is represented by an articulated and almost complete partial post cranial specimen|
|Classification:||| Chordata | Reptilia | Dinosauria | Saurischia | Sauropodomorpha | Sauropoda | Titanosauria | Lithostrotia ||
Epachthosaurus (meaning "heavy lizard") was a genus of dinosaur from the Late Cretaceous. It was a titanosaurid sauropod. Its fossils have been found in Central and Northern Patagonia in South America.