Scientists Identify Largest Dinosaur Ever Found in Southeast Asia
The discovery of Nagatitan chaiyaphumensis sheds light on how massive sauropods thrived during a period of rising global temperatures.
Primary source: BBC World News. Full source links and update notes are below.
Fast summary
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- Nagatitan chaiyaphumensis weighed approximately 27 tonnes and reached 27 meters in length.
- The species lived between 100 and 120 million years ago in what is now Thailand's Chaiyaphum province.
- The discovery provides evidence of how gigantic herbivores adapted to extreme climatic conditions and rising CO2 levels.
What happened
A team of researchers from the UK and Thailand has formally identified a new species of giant long-necked dinosaur, Nagatitan chaiyaphumensis. The species was identified from fossils recovered a decade ago near a pond in northeastern Thailand. It is now recognized as the largest dinosaur ever found in Southeast Asia, with a mass comparable to nine adult Asian elephants.
What's new in this update
A study led by Thitiwoot Sethapanichsakul of University College London, published in the journal Scientific Reports, details the unique characteristics of the Nagatitan. Researchers described the find as 'the last titan' of Thailand because the fossils were located in the region's youngest dinosaur-bearing rock formation, dating back 100 to 120 million years.
Key details
The Nagatitan was a member of the sauropod family, a group of long-necked herbivores that includes the diplodocus. At 27 meters in length, it was twice the size of a Tyrannosaurus rex. The name Nagatitan combines 'naga,' a serpent from Southeast Asian folklore, with the Greek 'titan,' while 'chaiyaphumensis' denotes the province where the remains were discovered.
Background and context
Thailand is increasingly recognized for its paleontological diversity, now boasting 14 named dinosaur species. The Nagatitan roamed the Earth during a period of high atmospheric carbon dioxide and rising temperatures. Co-author Prof Paul Upchurch noted that the existence of such large animals during this era is scientifically significant, as massive bodies typically struggle to dissipate heat in extreme climates.
What to watch next
Further research will focus on how the high temperatures of the Cretaceous period impacted the plant life that sustained these massive herbivores. Additionally, because the Nagatitan fossils were found in the youngest available rock layers before the region became a shallow sea, scientists believe this may be the final major sauropod discovery possible in the area.
Why it matters
This discovery establishes Thailand as a critical site for understanding dinosaur evolution and how large-bodied species survived during historical periods of high global heat.
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