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Giant New Dinosaur Identified From Remains Found in Thailand

  • On Thursday, researchers announced the discovery of Nagatitan chaiyaphumensis, a giant plant-eating sauropod unearthed in Thailand roughly 113 million years ago. This dinosaur is the largest ever found in Southeast Asia, measuring almost 90 feet long.
  • Rising atmospheric CO2 levels and arid conditions in Early Cretaceous Southeast Asia likely drove the species to evolve such massive proportions. Nagatitan used its long neck and tail to shed heat, thriving in savanna-like environments near meandering rivers.
  • Lead author Thitiwoot Sethapanichsakul described the specimen as a somphospondylan sauropod belonging to the Euhelopodidae family, unique to Asia. Researchers estimated the dinosaur weighed around 27 tons, with its front leg bone measuring around 5.8 feet long.
  • The study, published in Scientific Reports, dubs Nagatitan the 'last titan' of Thailand because the region later transformed into a shallow sea. It marks the 14th dinosaur species named in the country.
  • Excavation remains ongoing at the Chaiyaphum Province site, where experts believe additional fossils exist. Sethapanichsakul noted that researchers recently identified other large sauropod remains in a different Thai province, suggesting more discoveries may follow.
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Newly identified long-necked dino weighed same as 9 elephants

It has been named Nagatitan chaiyaphumensis.

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Popular Science broke the news in United States on Thursday, May 14, 2026.
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