Scientists have identified a new species of giant, long-necked dinosaur named 'Nagatitan' from fossils discovered in northeastern Thailand. The species, officially called 'Nagatitan chayaphumensis', lived between 100 and 120 million years ago, predating the Tyrannosaurus rex by about 40 million years. Measuring 27 meters in length and weighing around 27 tons, it is the largest dinosaur ever found in Southeast Asia and belongs to the herbivorous sauropod family.

The fossils were unearthed a decade ago near a pond in Thailand’s Chaiyaphum province by a team of researchers from the United Kingdom and Thailand. The study, published in the journal Scientific Reports, was led by Thai PhD researcher Thitiot Sethapanisakul of University College London. Researchers believe Nagatitan may represent Thailand’s “last titan,” as the fossils were found in the youngest rock layers containing dinosaur remains.

The discovery is expected to shed light on how ancient climate changes influenced the evolution of large dinosaurs. Scientists noted that Nagatitan lived during a period of global warming and rising carbon dioxide levels, when giant sauropods adapted to high temperatures and changing vegetation.