![]() Information References and Further Sources It is thought the extinct Titanoboa would have had a similar appearance. Photograph by James DiLoreto, Smithsonian. Yet, remarkable finds like it show life’s extraordinary ability to bounce back after mass extinctions, and can tell palaeontologists about the palaeoenvironment that these animals lived in. On the surface, Titanoboa cerrejonensis may just seem like another terrifying monster not to worry too much about, as it is long dead now. So with little competition from other animals, Titanoboa was able to grow to huge sizes to prey upon the other animals it shared its habitat with. After the K-PG mass extinction at the end of the Cretaceous Period, many ecological niches were left open for the surviving types of life, especially the roles of large predators in the ecosystem. This highlights how Titanaboa likely came to evolve. This suggests that large modern lizards are rare today due to the function of competition with other mammalian carnivores, not because of the function of modern temperatures. Furthermore, others have argued that Head et al.’s findings were overestimating the palaeotemperature, and another study stated the extinct large lizard Varanus ( Megalania) prisca would be 3 to 4 times longer than predicted by the largest living lizard today if the same approach used with Titanoboa was applied. However, many studies have argued against this, suggesting that Titanoboa is an inappropriate palaeothermometer because it would have been able to have some control over its internal body temperature with its behaviour. suggests there would need to be a minimum mean annual temperature of 30 – 34 OC for the snake to survive, 3.8 – 7.2 ☌ above the modern value. Based on the colossal size of Titanoboa, a study authored by Head et al. Poikilothermic, or cold-blooded, animals like snakes rely on the outside environment to regulate their body temperature, and therefore their maximum size is often limited by the temperature of their environment. What might be most interesting about Titanoboa’s discovery are the implications of the palaeoclimate of the area at the time. ![]() ![]() It is unclear if Titanoboa was a constrictor, using its own body to asphyxiate its prey like its modern relatives, or if it successfully predated in a different way. ![]() Being able to exploit both environments meant that it had access to more varied prey types, and could avoid causing damage to its own body, due to its huge size, by letting the water support its weight. It likely lived in both the water and on land. Related to modern Boa Constrictors, Titanoboa lived in the wet tropical rainforest that grew in what is now Cerrejón, Colombia. Snake skulls are made of delicate bones so they rarely fossilise, and the skull finds provide a unique insight into Titanoboa’s morphology and evolutionary history. Then, of course, they found the enormous vertebrae of Titanoboa, and remarkably, three skull fragments. Over time, many familiar rainforest plants, like banana, chocolate, and coconuts, were found in the area, as well as many large vertebrates, like giant crocodile-like animals and huge turtles to name a few. This amazing find came after a geology student visiting Cerrejón on a field trip found several plant fossils in several pieces of sandstone, the first clues of the presence of the rainforest that developed there 60 million years ago. However, it has nothing on the nightmare fuel of Titanoboa cerrejonensis, the largest snake ever discovered. The largest snake alive today is the Giant Anaconda, measuring an average of 5 m in length, and weighing just under 250 kg. ![]() ![]()
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