Scientists Stun with Discovery of Ancient Anacondas that Refused to Shrink: What Can We Learn from Their Resilience?
In a groundbreaking study published in the Journal of Vertebrate Paleontology, researchers have uncovered evidence that anacondas, the world's largest snakes, have remained remarkably unchanged in size for millions of years. Contrary to expectations, the massive reptiles never shrunk down despite the passing of time and changes in their habitats.
Using fossilized remains from Venezuela dating back 12.4 million years, the team estimated that ancient anacondas reached an astonishing average length of 13 to 16 feet (4 to 5 meters). This remarkable size is remarkably consistent with the lengths of modern anacondas, which thrive in swamps and rivers across tropical South America.
Unlike many other giant species that went extinct as global temperatures cooled and habitats contracted, "large Eunectes" - the ancient anaconda species - has persisted to this day. Researchers attribute this resilience to the snakes' ability to adapt to changing environments while retaining their impressive size.
"We found that anacondas evolved a large body size shortly after they appeared in tropical South America around 12.4 million years ago, and their size hasnโt changed since," said Andrรฉs Alfonso-Rojas, lead author of the study and PhD student at the University of Cambridge. "This is surprising because we expected to find that ancient anacondas were significantly longer."
The researchers employed a novel approach called ancestral state reconstruction, which involved reconstructing the length of giant anacondas and related species using a family tree-like framework. This method confirmed that when anacondas first emerged during the Miocene, they would have been around 13 to 16 feet long.
By studying these resilient giants, scientists can gain insights into how their ancestors adapted to environmental changes and developed traits that allowed them to thrive despite the odds. The discovery of ancient anacondas offers a fascinating glimpse into the evolutionary history of these incredible creatures.
In a groundbreaking study published in the Journal of Vertebrate Paleontology, researchers have uncovered evidence that anacondas, the world's largest snakes, have remained remarkably unchanged in size for millions of years. Contrary to expectations, the massive reptiles never shrunk down despite the passing of time and changes in their habitats.
Using fossilized remains from Venezuela dating back 12.4 million years, the team estimated that ancient anacondas reached an astonishing average length of 13 to 16 feet (4 to 5 meters). This remarkable size is remarkably consistent with the lengths of modern anacondas, which thrive in swamps and rivers across tropical South America.
Unlike many other giant species that went extinct as global temperatures cooled and habitats contracted, "large Eunectes" - the ancient anaconda species - has persisted to this day. Researchers attribute this resilience to the snakes' ability to adapt to changing environments while retaining their impressive size.
"We found that anacondas evolved a large body size shortly after they appeared in tropical South America around 12.4 million years ago, and their size hasnโt changed since," said Andrรฉs Alfonso-Rojas, lead author of the study and PhD student at the University of Cambridge. "This is surprising because we expected to find that ancient anacondas were significantly longer."
The researchers employed a novel approach called ancestral state reconstruction, which involved reconstructing the length of giant anacondas and related species using a family tree-like framework. This method confirmed that when anacondas first emerged during the Miocene, they would have been around 13 to 16 feet long.
By studying these resilient giants, scientists can gain insights into how their ancestors adapted to environmental changes and developed traits that allowed them to thrive despite the odds. The discovery of ancient anacondas offers a fascinating glimpse into the evolutionary history of these incredible creatures.