South American Fossil Reveals Fearsome Pre-Dinosaur Predator

south american fossil reveals fearsome pre dinosaur predator.jpg Science

Imagine a world dominated by gargantuan amphibian-like predators, ruling the land with an iron fist, or rather, a gnashing maw. Welcome to the Permian Period, an era when four-legged "tetrapods" reigned supreme, long before the rise of dinosaurs. According to a recent fossil find, one such predator, a 10-foot-long, 880-pound behemoth, functioned much like a modern-day big cat, topping the food chain in its local ecosystem. Yet, this colossal creature, far from resembling a feline, likely looked more akin to a large amphibian.

The reign of these formidable tetrapods, however, was abruptly halted by the "Great Dying," the most catastrophic extinction event in Earth’s history, which eradicated a staggering 86% of animal species on the planet. This mass extinction, triggered by dramatic climate changes, marked the end of the Permian Period and set the stage for the emergence of dinosaurs. The latest fossil discovery, Pampaphoneus biccai, unearthed from the Permian rock in southern Brazil, offers a haunting glimpse into this ancient world and the formidable creatures that once ruled it.

New Fossil Discovery Sheds Light on "Big Cat" of the Permian Period

A new fossil discovery has brought to light a land predator from the Permian period that acted much like a modern-day big cat, such as a tiger or lion, ruling over its food chain. However, this colossal beast, stretching 10 feet long and weighing 880 pounds, is unlikely to have resembled a feline. Instead, it’s believed to have looked more like a large amphibian.

Pre-Dinosaur Predators

Before the rise of dinosaurs, during the Permian period, these four-legged creatures, known as "tetrapods," held dominion over the land. However, their reign was cut short by the most catastrophic extinction event in history, known as the "Great Dying," which wiped out 86 percent of animal species on Earth due to climatic changes.

Discovery and Classification

The newly unearthed Pampaphoneus biccai fossil was found in a rural area near São Gabriel in southern Brazil. It’s the second specimen of its kind recovered from the area. The discovery was the result of a collaborative effort by researchers from the Federal University of Pampa (UNIPAMPA), Universidade Federal do Rio Grande do Sul, and Harvard University.

Recovering the fossil from Permian rock took over a month of intensive fieldwork, and the subsequent cleaning and classification took a further three years, delayed in part due to the COVID-19 pandemic. The fossil’s skull and a few other bones were classified as belonging to a dinocephalian, a group of large animals that included both carnivorous and herbivorous members. However, P. biccai was clearly a carnivore.

The Pampaphoneus Biccai

"Pampaphoneus played the same ecological role as modern big cats," said Felipe Pinheiro, a professor at UNIPAMPA. The animal boasted large, sharp canine teeth that were adapted for capturing prey. Its dentition and cranial architecture suggest it had a bite strong enough to chew bones, much like modern-day hyenas. The beast was likely feeding on the pig-like dicynodont Rastodon and the larger, crocodile-like amphibian Konzhukovia.

A Glimpse into the Permian Period

The Permian Period, which spanned from 299 to 251 million years ago, was a time when a single mega-continent, Pangea, and a mega-ocean, Panthalassa, dominated the Earth. Tetrapods like P. biccai roamed the land alongside the first conifer trees. Mammal-like animals were yet to appear – they would come later, during the age of the dinosaurs.


This discovery gives us a fascinating insight into a prehistoric time when amphibian-like predators reigned supreme. It serves as a reminder of the deep and complex history of life on Earth, and emphasizes the constantly evolving nature of our planet’s ecosystems. The P. biccai, in all its gnarly grandeur, stands as an intriguing testament to a bygone era of ecological dominance, before dinosaurs and mammals came to rule the land.

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