In a groundbreaking study recently published in Scientific Reports, researchers from the Indian Institute of Technology (IIT) Roorkee have unveiled a remarkable find from the pages of prehistoric history. A team of scientists hailing from IIT Roorkee, led by Dr. Debajit Datta, has meticulously analyzed dinosaur fossils from the Middle Jurassic era. These remarkable remains were discovered in the arid expanse of the Thar desert, nestled within the Jaisalmer Basin, by the diligent efforts of the Geological Survey of India.
The spotlight of this discovery shines upon a sauropod dinosaur, belonging to the distinctive Dicraeosauridae family and the superfamily Diplodocoidea. What sets these fossils apart is not just their lineage but also their age – a staggering 167 million years old. Meet Tharosaurus indicus, a moniker derived from its Indian origin and its desert dwelling. This newly identified sauropod brings with it a legacy that predates all others of its kind.
For aeons, sauropods have captivated the world with their colossal proportions. Debajit Datta, a key author of the study, notes that these giants could grow taller than a hundred feet. However, the Dicraeosauridae clan, of which Tharosaurus is a part, boasts a unique distinction. These sauropods possessed comparatively shorter necks and tails, setting them apart from their long-necked relatives.
Middle Jurassic: A Cryptic Era
The discovery serves as a rare glimpse into the Middle Jurassic epoch, an era that remains enigmatic due to sparse fossil evidence. Advait Jukar, a palaeontologist at the University of Arizona, suggests that the scarcity of exposed rocks from this period contributes to the dearth of findings. Additionally, the scientific community’s focus on exploring exposed rocks in India during this specific time frame has been relatively limited.
Remarkably, India has previously been a haven for early sauropods, including Kotasaurus and Barapasaurus, unearthed in the Kota Formation of Telangana. As Dr. Datta remarks, the presence of Tharosaurus alongside these ancient cousins underscores the evolution of sauropods on the Indian subcontinent during the Middle Jurassic.
The Puzzle of Pangaea and Global Migration
Tharosaurus‘ ancient home was quite different from present-day India. 167 million years ago, India was part of Gondwanaland, a collection of continents including Africa, South America, Madagascar, and Antarctica. Datta suggests that India’s role in the evolutionary story of sauropods is significant, positing it as the epicenter for the radiation of diplodocoid dinosaurs to other corners of the world.
The theory finds support in the fact that diplodocoid fossils in other continents hail from a more recent geological period. This suggests the likelihood of India being the birthplace of early diplodocoid radiation. Furthermore, the discovery of archaic sauropod fossils in India, coupled with Tharosaurus‘ presence, underscores the nation’s pivotal role in the evolutionary timeline of sauropods.
Unveiling the Past, One Fossil at a Time
While the discovery of Tharosaurus indicus is monumental, researchers acknowledge that the puzzle remains incomplete. The fossils provide tantalizing glimpses into the past, revealing parts of the dinosaur’s backbone. However, more discoveries are needed to assemble a comprehensive picture of sauropod evolution during this crucial period.
The search for ancient relics continues, as paleontologists aspire to unearth more treasures from the sands of time. Dr. Bajpai emphasizes the necessity for further exploration in the Jaisalmer region, suggesting that it holds untapped potential for Middle Jurassic dinosaur findings.
In a world where dinosaur discoveries often command international attention, Indian paleontology is poised to rise to prominence. As Dr. Jukar laments the scarcity of Indian dinosaur discoveries, researchers echo the call for increased investment in paleontological studies and the establishment of natural history museums.
As the scientific community stands on the cusp of unraveling prehistoric mysteries, the legacy of Tharosaurus indicus serves as a testament to the rich history that lies buried beneath the earth’s surface.
Rohini Subrahmanyam, a freelance journalist, contributed to this report.
