Titanoboa vs Vasuki: Is India’s 47-Million-Year-Old Snake the Largest Ever?

Titanoboa was as long as a school bus and as thick as a man’s waist, and for fifteen years it was the undisputed largest snake that ever lived. Then, in April 2024, scientists at IIT Roorkee described 27 vertebrae pulled from a lignite mine in Kutch, Gujarat — a 47-million-year-old serpent they named Vasuki indicus, possibly longer still. Here are the verified facts about Titanoboa, the Indian challenger to its crown, and — clearly labelled — the fictional “encounter” story this post is known for.

AI-generated impression. No photograph of a living Titanoboa exists — it died out 58 million years ago.

The five that give you the scale

13 mTitanoboa’s estimated length — about 42 feet, longer than a city bus. The biggest living snakes top out around 7 m.

1,135 kgIts estimated weight — more than a tonne, over ten times a large anaconda.

FishIts main food, according to the skull found in 2012 — not crocodiles, as every documentary claimed.

Gujarat, 2024Where Vasuki indicus was found: 11–15 m long, 47 million years old, and possibly the new record holder.

30 °C+The average year-round temperature its swamp needed — a clue to how hot the Earth was 58 million years ago.

12 verified facts about Titanoboa

The discovery

1. It was found in a coal mine. The Cerrejón mine in northern Colombia, one of the world’s largest open-pit coal mines, exposed a 58-million-year-old rainforest. Fossil hunters collected vertebrae there from 2004; the snake was formally described in Nature in February 2009.
2. The vertebrae were so big they were mistaken for crocodile bones. A single Titanoboa vertebra is wider than a man’s hand; the largest anaconda vertebra would fit inside it with room to spare.
3. Its name means “titanic boa” — Titanoboa cerrejonensis, after the mine. It was a relative of today’s boas and anacondas, not a python.
4. The skull turned up three years later. Snake skulls are fragile and rarely fossilise; the 2012 find showed teeth suited to gripping slippery prey — fish — rather than the bone-crushing crocodile-hunter of popular imagination.

The animal

5. About 13 metres long, over a tonne in weight. Estimates come from scaling the vertebrae against living boas; the widest part of its body was about a metre across.
6. It lived 58–60 million years ago, in the Paleocene — just a few million years after the asteroid wiped out the dinosaurs, in a world where reptiles briefly got enormous again.
7. It needed a hothouse Earth. Cold-blooded animals can only grow this large in constant heat; Titanoboa implies year-round temperatures of 30–34 °C in equatorial South America, far above today’s 26 °C.
8. It spent most of its time in water, like a modern anaconda — the only way to support a tonne of body without legs — hunting fish, turtles and small crocodilians in the swamp.
9. It shared its swamp with giant turtles (Carbonemys, with a shell 1.7 m long) and dyrosaurid crocodiles — a complete oversized ecosystem preserved in one mine.
10. A full-size model rode into New York. The Smithsonian’s 48-foot Titanoboa replica was unveiled at Grand Central Terminal in 2012 before touring US museums.

The challenger from India

11. Vasuki indicus may have been longer. 2024 Named after the serpent around Shiva’s neck, it was described by Debajit Datta and Sunil Bajpai of IIT Roorkee in Scientific Reports (April 2024) from 27 vertebrae found at the Panandhro lignite mine, Kutch. Estimated length: 11–15 metres; weight about a tonne.
12. It is a different kind of snake — and 11 million years younger. Vasuki belonged to the extinct Madtsoiidae family, lived about 47 million years ago in a warm coastal swamp, and was probably a slow ambush constrictor. Guinness now lists the two as rivals for the title; neither can be crowned until a more complete Vasuki skeleton is found.

	Titanoboa	Vasuki indicus	Green anaconda (living)
Length	~13 m	11–15 m (estimate)	up to ~7 m
Weight	~1,135 kg	~1,000 kg (estimate)	~100 kg
Age	58–60 million years	~47 million years	alive today
Found	Cerrejón, Colombia (2009)	Kutch, Gujarat (2024)	Amazon basin

Myth busters

Three Titanoboa “facts” the internet keeps getting wrong

✗Titanoboa hunted crocodiles.
Its skull and teeth say fish. It may have taken small crocodilians, but it was built for the water, not for wrestling giants.

✗Titanoboa is still the largest snake ever, unchallenged.
Since 2024, India’s Vasuki indicus is a serious rival — the two are now listed as comparable.

✗Titanoboa could still be alive in the Amazon.
No. It needed a climate several degrees hotter than anywhere on Earth today, and no snake fossil younger than 58 million years comes close. The story below is fiction.

Short fiction — not a real event

“Operation Serpent’s Shadow”

AI-generated illustration.

In the heart of the Amazon, rumours had swirled for years about a creature thought long extinct. Locals spoke of a serpent that stalked the rivers, dismissed as myth — until a research team found a fossil that seemed far too fresh to be sixty million years old.

Operation Serpent’s Shadow sent a helicopter low over the canopy. What the crew saw made the pilot’s voice shake on the radio: a body the colour of wet bark, thick as a tree trunk, winding through a brown river with impossible grace. Then the tracks — more of them, deeper in — and the question none of them wanted to ask aloud: a breeding population?

As they circled back for evidence, the great head rose from the water and turned toward the helicopter, unhurried, as if taking their measure. Then it slid beneath the canopy and was gone. The footage was sealed; the rumours were not. Somewhere beneath that green, something older than the Andes was still waiting.

A story written for FactReact. Titanoboa is extinct; the facts above are the real ones.

Read more on FactReact

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Sources: Nature (2009) – Head et al., giant boid snake from the Palaeocene · Scientific Reports (2024) – Datta & Bajpai, Vasuki indicus · Down To Earth – Gujarat snake fossil · Smithsonian Magazine – how Titanoboa was found · Guinness World Records – largest snake ever

Last fact-checked: October 2026.