Nagaтιтan chaiyaphumensis: Thailand’s 27-Metre Giant Longer Than a Pickup Truck Makes Ancient Southeast Asia Even More Terrifying

In a May 2026 Scientific Reports paper, Thai and international researchers have formally named Nagaтιтan chaiyaphumensis — the largest dinosaur ever discovered in Southeast Asia and one of the biggest тιтanosauriforms on record. The partial skeleton, found by chance near a village pond in Chaiyaphum Province, northeastern Thailand, comes from the Early Cretaceous Khok Kruat Formation (~120–100 million years ago).

At an estimated 27 metres long and 45–54 tonnes — the weight of nine African elephants — this colossal sauropod was longer than a standard pickup truck and heavier than three African elephants. A single front limb bone measures 1.78 metres, taller than most humans. The name combines “Naga,” the legendary serpent of Thai mythology, with “тιтan” and the discovery province.

Phylogenetic analysis places Nagaтιтan within Euhelopodidae, but it does not form an endemic clade with Thailand’s other known sauropods. Its diagnostic vertebral features highlight greater тιтanosauriform diversity than previously recognised. Crucially, it is the geologically youngest sauropod in Thailand — “the last тιтan” — before rising sea levels flooded much of the region later in the Cretaceous.

Its enormous size supports models linking Middle Cretaceous warming and expanded dry, open habitats to a boom in giant Asian sauropods. Discovered by a local villager and now the 14th named dinosaur from Thailand, Nagaтιтan proves Southeast Asia hosted true giants and forces a complete re-evaluation of тιтanosauriform biogeography across the continent.

The “last тιтan” has finally stepped into the light, proving that ancient Southeast Asia was home to some of the most terrifyingly mᴀssive land animals Earth has ever seen.