Scientists Unearth Southeast Asia's Largest Dinosaur in Thailand

Researchers have identified Nagatitan chaiyaphumensis, the largest known dinosaur from Southeast Asia, following the excavation of its fossils in Thailand's Chaiyaphum province. This Cretaceous Period sauropod, which lived approximately 113 million years ago, is estimated to have been nearly 27 meters long and weighed between 25 and 28 tons. The discovery was initiated by a local villager, leading scientists to recover significant skeletal remains, including spine, rib, pelvis, and leg bones. Notably, the humerus measured 1.78 meters. Although the head and teeth were not found, experts believe Nagatitan was a bulk browser feeding on conifers and seed ferns in a subtropical environment. Due to its immense size, it likely faced little threat from predators, such as an 8-meter-long relative of Carcharodontosaurus. The findings, published in Scientific Reports by researchers including Thitiwoot Sethapanichsakul from University College London, highlight the rapid growth rates of sauropods as a defense mechanism. While massive, Nagatitan was smaller than South American giants like Argentinosaurus, marking a significant addition to the understanding of prehistoric ecosystems in the region.