10:43 PMUnearthed in a rock layer dating back to the Triassic period
between 252 million and 201 million years ago
the Gondwanax paraisensis fossil comes from the time when dinosaurs
Brazil (Reuters) - Scientists in Brazil announced the discovery of one of the world's oldest fossils believed to belong to an ancient reptile dating back some 237 million years that could help explain the rise of the dinosaurs
the four-legged reptile species was roughly the size of a small dog with a long tail
or about 1 meter (39 inches) long and weighing between 3 and 6 kg (7 to 13 pounds)
the scientists said in a statement on Monday
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The small reptile would have likely roamed the land of what is today southern Brazil, when the world was much hotter.
The fossil has been identified as a new silesaurid, an extinct group of reptiles. Paleontologists debate whether silesaurids were true dinosaurs or possibly a precursor to the creatures that once dominated the Earth.
"Understanding the characteristics of these precursors could shed light on what was crucial for the dinosaurs' evolutionary success," the statement said.
Unearthed in a rock layer dating back to the Triassic period, between 252 million and 201 million years ago, the Gondwanax paraisensis fossil comes from the time when dinosaurs as well as mammals, crocodiles, turtles and frogs first arose.
In 2014, physician Pedro Lucas Porcela Aurelio found the fossil in the town of Paraiso do Sul in Brazil's southernmost Rio Grande do Sul state.
He donated it to a local university in 2021, kicking off three years of research.
"Being the first human to touch something from 237 million years ago is extraordinary," Aurelio told Reuters.
"It's an indescribable feeling," said the self-described paleontology buff since childhood.
The discovery is detailed in an article by paleontologist Rodrigo Temp Müller published late last month in the scientific journal Gondwana Research.
"The most important part of this finding is its age," Müller said in an interview. "Because it's so old, it gives us clues as to how dinosaurs came to be."
He added that the remains were covered by a thick layer of rock when donated by Aurelio and initially only parts of the vertebrae were visible.
Gondwanax means "lord of Gondwana," referring to the Gondwana landmass in the southern region of the supercontinent Pangaea before the continents broke apart, while paraisensis honors the town of Paraiso do Sul.
(Reporting by Sergio Queiroz and Diego Vara; Editing by David Alire Garcia and Sandra Maler)
CBC LiteSectionsNews • ScienceThis 237-million-year-old fossil from Brazil could shed light on rise of dinosaursReuters | Posted: October 14, 2024 3:05 PM | Last Updated: October 22
One of the oldest fossils ever discovered, Gondwanax paraisensis was a 4-legged reptile species
Caption: Rodrigo Temp Muller, a paleontologist from the Federal University of Santa Maria, holds a fossil called Gondwanax paraisensis, a species that lived 237 million years ago and was a precursor to dinosaurs, in the Cappa laboratory in Sao Joao do Polesine, Rio Grande do Sul state, Brazil, on Oct. 8. (Diego Vara/Reuters)
Caption: Paleontologist Rodrigo Temp Muller analyzes a Gondwanax paraisensis fossil in the Cappa laboratory. The fossil was originally found in 2014 and then donated to a university in 2021, kicking off three years of research. (Diego Vara/Reuters)
Caption: Muller holds Gondwanax paraisensis next to a contemporary fossil of Prestosuchus chiniquensis, a species that lived 237 million years ago, in the Cappa laboratory. (Diego Vara/Reuters)
Caption: Muller and geologist Jossano de Rosso Morais, both from the Federal University of Santa Maria, are seen on Oct. 9, searching for fossils at the archaeological site where a fossil of the Gondwanax paraisensis was discovered in the town of Paraiso do Sul, Brazil. (Diego Vara/Reuters)
.embed_embed__gX4nW button { display: none; }He added that the remains were covered by a thick layer of rock when donated by Aurelio and initially only parts of the vertebrae were visible.Gondwanax means "lord of Gondwana," referring to the Gondwana landmass in the southern region of the supercontinent Pangaea before the continents broke apart
while paraisensis honors the town of Paraiso do Sul.More Stories Like ThisThe related links below are generated automatically based on the story you’ve just read