The discovery of some bones on the edge of a pond in Thailand a decade in the past has led to the identification of a brand new kind of dinosaur, with a large measurement, lengthy neck and tail, and a plant eating regimen.
Named “Nagatitan chaiyaphumensis” by researchers in Thailand and London, the reptile is the most important dinosaur ever to be found in Southeast Asia.
Weighing in at an estimated 27 metric tons — or virtually 60,000 kilos — it was roughly 27 meters lengthy, or virtually 89 ft, in line with the examine printed in the journal Scientific Reports on Thursday. For context, a big Tyrannosaurus rex would have weighed between 9,000 and 15,000 kilos and been greater than 12 meters lengthy (about 39 ft).
Nagatitan chaiyaphumensis belonged to a bunch of dinosaurs generally known as sauropods, which had been the most important animals ever to stroll on land. Among these plant-eating, long-necked, thick-legged dinosaurs, with a torso containing an enormous intestine, had been the Diplodocus and Brontosaurus.
The newly found dinosaur’s humerus, or entrance leg bone, measured 1.78 meters (virtually six ft) in size, in line with a press release.
“We don’t have a lot of specimens that are of that scale in Thailand,” lead examine creator and paleontologist Thitiwoot Sethapanichsakul, a PhD pupil at University College London, advised NCS on Friday.
“When I first laid eyes on the humerus, it was taller than me, and that was quite surprising,” he continued, including that the dinosaur is about double the scale of one other identified sauropod species in Thailand.
The leg bone was amongst a number of fossils found by an area resident on the aspect of a communal pond in northeastern Thailand in 2016, through the dry season when the water ranges had been decrease.
Skeletal remains had been found throughout fieldwork there between 2016 and 2019, and additional excavation work came about in 2024.
The researchers — from UCL and Thailand’s Department of Mineral Resources, Mahasarakham University and Suranaree University of Technology — took 3D scans of the remains, which got here from the dinosaur’s leg bones, backbone, ribs and pelvis, earlier than analyses revealed the animal was a beforehand unknown species.
The “naga” in Nagatitan chaiyaphumensis’ identify refers back to the identify of a mythological serpent from South and Southeast Asian folklore. “The Nagas are also often associated with water, and considering the dinosaur was found on the side of a communal pond, it just seemed very apt to have a serpent giant be the name,” Sethapanichsakul stated.
“Titan” pertains to giants from Greek mythology and refers back to the animal’s measurement, and “chaiyaphumensis” refers back to the Thai province in which the dinosaur was found.
“It fulfills a kind of childhood promise,” stated Sethapanichsakul, whose dwelling nation is Thailand. “That, yeah, I’m going to name a dinosaur one day. And I want it to be from Thailand.”
Nagatitan most likely lived through the late Early Cretaceous interval, round 120 million to 100 million years in the past, in line with the examine. It would have lived alongside smaller, medium-sized plant-eating dinosaurs, just like Iguanodons, in addition to “a kind of very early form of what we would call Ceratopsians, cousins of Triceratops,” Sethapanichsakul stated.
The setting at the moment was “very dry and warm,” he stated, including that the location the place the dinosaur was found represents a form of meandering river system that might have had “freshwater fish, freshwater sharks, crocodiles, turtles.”
Sethapanichsakul stated he thinks Thailand has “some of the highest diversity” of dinosaur fossils in Asia, partly resulting from having a really thick layer of sedimentary rocks from the Mesozoic Era, roughly 252 million to 66 million years in the past.
“These rocks are exposed to less rain and vegetation, which could end up eroding or destroying those bones,” he added.
A analysis heart has been arrange on the website of the invention, stated Sethapanichsakul, who continues to work on sauropods from Southeast Asia.
A life-sized reconstruction of the Nagatitan chaiyaphumensis is on show on the Thainosaur Museum in Bangkok.