Thai and British palaeontologists have identified a new species of giant long-necked sauropod dinosaur named Nagatitan chaiyaphumensis [1, 2].

The discovery is significant because it provides critical clues about the ancient climate conditions that allowed such massive sauropods to evolve in Southeast Asia [5, 1].

Researchers discovered the fossils at the edge of a pond in Thailand [3, 4]. The remains date back more than 100 million years [2]. This timeline places the creature in an era of significant prehistoric biological diversification.

Nagatitan was a massive animal, reaching an estimated length of approximately 27 meters [1]. In terms of mass, scientists estimate the dinosaur weighed about 27 tonnes [1]. To provide a scale of its size, researchers said the species was about twice the size of a Tyrannosaurus rex [2].

The identification of Nagatitan chaiyaphumensis marks it as the largest dinosaur species ever found in Thailand [1]. The collaborative effort between Thai and British scientists highlights the international nature of modern palaeontology, a field that relies on cross-border expertise to reconstruct prehistoric ecosystems.

By analyzing the skeletal structure and the environment where the bones were found, the team aims to understand how these giants sustained themselves. The sheer size of the animal suggests a highly productive environment capable of supporting immense caloric needs.

Nagatitan was a massive animal, reaching an estimated length of approximately 27 meters.

The identification of Nagatitan chaiyaphumensis shifts the understanding of prehistoric Southeast Asia by proving the region could support mega-fauna on a scale previously associated with other continents. This discovery suggests that the paleoclimate of the region was sufficiently lush and stable to sustain the extreme metabolic demands of 27-tonne sauropods.