Paleontologists have identified a massive prehistoric snake species from fossilized remains recovered in Gujarat, western India. The specimen, designated Vasuki indicus, lived approximately 47 million years ago during the Middle Eocene epoch. Based on analysis of 27 well-preserved vertebral bones, researchers estimate the snake could have measured between 10.9 and 15.2 meters in length, placing it among the largest snakes known to science. The unusually broad vertebrae suggest the creature possessed a thick, cylindrical body capable of supporting considerable weight. Scientists named the species after Vasuki, a mythical serpent from Hindu mythology associated with the deity Shiva.
The exact size of Vasuki remains uncertain, as complete skeletal material was not recovered. Researchers employed comparative methods using vertebrae from modern snakes to estimate the ancient reptile’s dimensions, though different calculation approaches yielded varying results. The estimated length places Vasuki in direct comparison with Titanoboa, a giant snake from South America that lived approximately 60 million years ago and reached lengths around 13 meters. However, scientists caution that substantial uncertainty accompanies their size calculations, and whether Vasuki actually exceeded Titanoboa cannot be definitively determined from available evidence.
Based on anatomical features, researchers suggest Vasuki likely hunted through ambush rather than active pursuit, given its considerable size and associated skeletal structure that would have favored relatively slow movement. The snake probably employed constriction to subdue prey, similar to modern anacondas and pythons. Its anatomy indicates the creature may have inhabited wetlands and marshy environments rather than exclusively aquatic settings. The tropical climate of Middle Eocene India, with estimated average temperatures around 28 degrees Celsius, may have supported the growth of such enormous reptiles, as snakes rely on external heat sources for metabolic regulation.
Vasuki represents a distinct evolutionary lineage within Madtsoiidae, an extinct family of snakes that persisted for approximately 100 million years. Related species have been identified across multiple continents including Africa, Europe, South America, and Australia, suggesting that giant madtsoiid snakes originated in the Indian subcontinent before dispersing during geographic and climate shifts. Additional research published in 2025 documented a diverse community of ancient snakes from the same Eocene deposits in western India, including aquatic species and other extinct reptile groups, providing broader context for understanding prehistoric snake evolution and distribution.
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