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Fossil vertebrae of a massive python, measuring nearly 4 meters long, were unearthed from the Chiting Formation in Taiwan, indicating its existence during the Middle Pleistocene.
An artistic reconstruction of a python and Toyotamafimia in Middle Pleistocene Taiwan. Image credit: National Taiwan University, Fossil Vertebrate Evolution and Diversity Laboratory / Cheng-Han Sun.
The Python genus comprises nearly 10 species of snakes within the Pythonidae family, found across tropical and subtropical regions of the Eastern Hemisphere.
In Africa, pythons inhabit tropical zones south of the Sahara, being absent from the southwestern tip of southern Africa and Madagascar.
In Asia, their range extends from Bangladesh, Nepal, India, Pakistan, and Sri Lanka, across Myanmar to Indochina, southern China, Hong Kong, Hainan, and throughout the Malay region of Indonesia, and the Philippines.
“There are currently no living members of the Python genus on the main island of Taiwan,” notes Yi Lu Liau and colleagues from National Taiwan University.
A recent study involved paleontologists who analyzed a large, single trunk vertebra found near Tainan, Taiwan.
This vertebra dates back to the Middle Pleistocene, approximately 800,000 to 400,000 years ago.
The researchers classified this specimen as belonging to the Python genus, marking the first discovery of python fossils on mainland Taiwan.
Using measurements from a 3D reconstruction of the specimen, researchers estimated that this ancient snake reached lengths of about 4 meters, surpassing the size of modern snakes in Taiwan.
While Taiwan is home to over 50 snake species, none match the size indicated by these fossils.
“This fossil is not only the largest but also the most surprising snake fossil discovered in Taiwan,” the researchers stated.
The fossil was recovered from the Chiting Formation, a geological unit rich in fossils from southern Taiwan, where large herbivores such as saber-toothed cats, massive crocodiles, mammoths, and extinct rhinos have also been found.
Collectively, these findings suggest a complex, predator-dominated ecosystem during the Middle Pleistocene, in stark contrast to Taiwan’s current fauna.
“A top predator has gone extinct, as shown by the discovery of this enormous Python. Alternatively, previously documented saber-toothed tigers and large crocodiles indicate rapid changes in Taiwan’s modern biodiversity,” the scientists concluded.
“We propose that the top predator niche in today’s ecosystems may have remained vacant since the Pleistocene extinction event.”
“Future discoveries and in-depth analyses should further explore this hypothesis and illuminate the origins of modern biodiversity in the Far East.”
For more details regarding this discovery, refer to the study published in the journal Historical Biology.
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Yi Lu Liau and colleagues. Unexpected snake fossil (Pythonidae, Python) discovered in Taiwan. Historical Biology, published online on January 16, 2026. doi: 10.1080/08912963.2025.2610741
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Source: www.sci.news
