Soumyasaurus Facts
| Diet | Omnivore |
| Height | 0.3m |
| Length | 1.2m |
| Weight | 5 kg |
| Environment | Land |
| Era | Triassic |
| Period | Late Triassic |
| Type | Other |
| Location | North America |

| Diet | Omnivore |
| Height | 0.3m |
| Length | 1.2m |
| Weight | 5 kg |
| Environment | Land |
| Era | Triassic |
| Period | Late Triassic |
| Type | Other |
| Location | North America |
Although once thought to be related to dinosaurs, Soumyasaurus is now known to be a silesaurid dinosauriform, a member of an ancient group of archosaurs that lived alongside the earliest true dinosaurs during the Late Triassic period. This small reptile inhabited the ancient landscapes of what is now western Texas around 227 million years ago, during the Norian stage of the Late Triassic.
Soumyasaurus was a relatively small creature, measuring approximately 1.2 metres in length and standing about 30 centimetres tall at the hip. Like other silesaurids, it likely walked on two legs and possessed a mix of primitive archosaur features alongside some characteristics that would later become prominent in true dinosaurs. Its lightweight build suggests it was an agile animal, well-suited to navigating the diverse Triassic ecosystems of ancient North America.
As an omnivore, Soumyasaurus likely fed on a varied diet including small animals, insects, and plant material. This flexible feeding strategy would have been advantageous during the Late Triassic, a time of significant ecological change when early dinosaurs and their relatives were beginning to diversify and establish themselves in various ecological niches.
The discovery of Soumyasaurus has provided valuable insights into the evolution of dinosauriforms and helps scientists better understand the relationships between early archosaurs and the dinosaurs that would eventually dominate terrestrial ecosystems.
Soumyasaurus possessed the characteristic silesaurid body plan with a relatively small, lightweight frame and long hindlimbs adapted for bipedal locomotion. Its skull featured a mix of primitive archosaur traits alongside some derived characteristics shared with early dinosaurs.
Soumyasaurus likely lived as a ground-dwelling omnivore, using its agility to hunt small prey and forage for plant material. As a relatively small animal in Late Triassic ecosystems, it would have needed to remain alert to avoid larger predators whilst taking advantage of diverse food sources.
Soumyasaurus was first described by Sterling Nesbitt and colleagues in 2020. The original fossils were discovered at Cooper Canyon Formation, western Texas, USA.