An colossal prehistoric creature, estimated to be as substantial as nine elephants, has been unearthed in Thailand.
This newly identified dinosaur, christened Nagatitan chaiyaphumensis, roamed the planet over 100 million years ago, during the Early Cretaceous period.
It belonged to the sauropod classification, characterized by an elongated tail, an extended neck, and a voracious appetite for vegetation, much like the historically debated Brontosaurus.
Its estimated weight reached approximately 28 tons, with a remarkable length of around 27 meters (89 feet).
This dimension is truly immense, exceeding the weight of the widely recognized (and famously enormous) Dippy the Diplodocus by over 10 tons.
Consequently, Nagatitan holds the distinction of being the most substantial dinosaur ever discovered within Southeast Asia.
However, in comparison to Patagotitan, a sauropod believed to have weighed roughly 70 tons and potentially the largest terrestrial animal to have ever existed, Nagatitan would have been considered only modestly gigantic.
The nomenclature of Nagatitan also carries significant meaning.
“Naga” is a reference to mythical aquatic serpents prominently featured in Asian and Buddhist folklore. “Titan” originates from the Titans, the primordial deities of ancient Greek mythology.
The specific epithet “Chaiyaphumensis” is derived from the province of Chaiyaphum in Thailand, the geographical location where the skeletal remains were unearthed.
As detailed in a recent scientific publication authored by a collaborative group of researchers from Thailand and University College London (UCL), the remnants of Nagatitan were first identified in 2016 near the margin of a now-dry pond in northeastern Thailand.
To meticulously analyze the delicate fossilized material and facilitate inter-institutional study, the research team employed a surface-scanning methodology to generate precise three-dimensional digital representations.
“The specimens were examined both in Thailand and at UCL. The advent of 3D scanning and printing has enabled us to study the specimen and gather data without the necessity of physical travel,” stated Paul Upchurch, a paleobiologist at UCL and a co-author of the research study.
When juxtaposed with other dinosaur fossil discoveries, this collection was remarkably comprehensive, exhibiting several distinct morphological characteristics that differentiate it from those of other known sauropods.
The inventory of fossilized remains included eight vertebrae, five ribs, portions of the pelvic girdle, a humerus, and a femur, in addition to several unidentified fragments.
This dinosaur appears to represent a significant terminal lineage. The paleontologists have aptly named it “the last titan” due to its discovery within the Khok Kruat Formation, recognized as the most recent dinosaur-fossil-bearing geological stratum in Thailand.
The Khok Kruat Formation is a rich repository of diverse fossilized organisms, encompassing ancient sharks, turtles, pterosaurs, early crocodile relatives, and formidable carnivorous theropods, including an 8-meter-long shark-toothed predator.
During the Early Cretaceous epoch, this region likely comprised shrublands and savannas interspersed with a winding river system. As airborne reptiles would have swiftly swooped down to catch fish from the waterways, Nagatitan might have extended its elongated neck to draw in substantial quantities of water.
As is typical for fauna, sauropods appear to have adapted effectively to escalating temperatures, irrespective of their immense size. It is plausible that they developed a substantial surface area as a mechanism for dissipating heat.
Subsequently, the geological environment underwent a dramatic transformation, marking the conclusion of the dinosaurs’ dominance in Southeast Asia.
“It is improbable that younger geological layers deposited towards the end of the dinosaur era will contain dinosaurian remains, as the region had by that point become a shallow marine environment,” elucidated Thitiwoot Sethapanichsakul, a paleontologist at UCL and the lead author of the research paper.
“Therefore, this individual may represent the final or most recent large sauropod species we are likely to discover in Southeast Asia.”
Nagatitan not only signifies an important “last” but also represents an exciting inaugural discovery for those involved in its unearthing.
“My passion for dinosaurs dates back to my childhood,” shared Sethapanichsakul.
“This research not only establishes a novel species but also fulfills a lifelong aspiration of naming a dinosaur.”
