Torrential rains in Brazil have led to a significant paleontological discovery: what scientists believe could be the world’s oldest known dinosaur skeletons. The nearly intact fossil, unearthed near a reservoir in Brazil’s southernmost state of Rio Grande do Sul, is estimated to be around 233 million years old.
Researchers suggest that this fossil dates back to the Triassic Period, a time when Earth’s continents were unified as the supercontinent Pangea, and dinosaurs were just beginning to emerge. The fossil is thought to belong to the Herrerasauridae family, a group of early carnivorous dinosaurs that reached about 2.5 meters in length and roamed across regions of what are now Brazil and Argentina.
Rodrigo Müller from the Federal University of Santa Maria commented on the discovery, saying, “It’s among the oldest in the world.” Müller, who is part of the research team, noted that what initially appeared to be isolated bones turned out to be an almost complete skeleton. “Initially it seemed like just a few isolated bones, but as we exposed the material, we were able to see that we had an almost complete skeleton,” the Associated Press quoted him as saying.
This find could potentially push back the known age of dinosaurs. Currently, the oldest confirmed dinosaur fossils are dated to about 231 million years ago, with some disputed specimens claimed to be as old as 240 million years.
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The significance of this discovery lies in its potential to enhance our understanding of dinosaur origins. “It’s already important because of the role it’s likely to play in helping us understand the origin of the dinosaurs,” Müller said.
However, the region’s increasingly severe weather conditions pose a threat to the fossil site. In June, the state experienced an unprecedented deluge, receiving the equivalent of three months of rain within just two weeks. This resulted in floods that claimed nearly 200 lives. Researchers are now racing against time to salvage additional fossils before further rains potentially obliterate them. Already, some remains, including a leg bone and a pelvis bone, have been destroyed by the floods.
As the team works to preserve this invaluable find, the ongoing adverse weather conditions underscore the urgency of their efforts in this race against nature.
