Overosaurus Facts
| Diet | Herbivore |
| Height | 3m |
| Length | 10m |
| Weight | 5 tonnes |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Sauropod |
| Location | Argentina |

| Diet | Herbivore |
| Height | 3m |
| Length | 10m |
| Weight | 5 tonnes |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Sauropod |
| Location | Argentina |
Overosaurus was a fascinating sauropod dinosaur that lived in what is now Argentina during the Late Cretaceous period, approximately 86 to 84 million years ago. This long-necked herbivore roamed the ancient landscapes of Patagonia, representing one of the smaller members of the sauropod group found in this region.
Unlike some of its massive Patagonian relatives, Overosaurus was relatively modest in size for a sauropod, measuring about 10 metres in length. This made it considerably smaller than giants like Argentinosaurus, yet it still possessed the classic sauropod body plan with a long neck, long tail, and four sturdy legs. Its compact size may have been an adaptation to specific environmental conditions or food sources in its habitat.
As a herbivore, Overosaurus would have spent most of its time feeding on the abundant plant life of the Late Cretaceous. Its long neck allowed it to reach vegetation at various heights, from ground-level ferns to taller conifers and flowering plants that were becoming more common during this period. The dinosaur's teeth were adapted for stripping leaves and soft plant material, which it would have swallowed whole to be processed in its large digestive system.
Overosaurus lived during an important time in dinosaur evolution, when South America was home to a diverse array of sauropods. Its discovery has helped palaeontologists better understand the variety and relationships of Late Cretaceous sauropods in Patagonia, contributing valuable insights into how these magnificent creatures evolved and adapted to their environments.
Overosaurus was distinguished by its relatively small size compared to other Patagonian sauropods, measuring only 10 metres in length. It possessed the typical sauropod features of a long neck and tail, but in more modest proportions than its giant relatives.
Overosaurus likely lived in small herds, moving through the Patagonian landscape in search of suitable vegetation. As a smaller sauropod, it may have been more selective in its feeding habits, targeting specific plants that larger sauropods might have overlooked.
Overosaurus was first described by Sebastián Apesteguía and colleagues in 2013. The original fossils were discovered at Overo locality, Patagonia, Argentina.