The oldest dinosaurs in the world may have inhabited Brazil, specifically the area called the Santa Maria Formation, in the central region of the state of Rio Grande do Sul, and this was recognized by the Guinness Book of Records yesterday (5).
Guinness says that although the idea of fossils of animals that lived millions of years ago cannot be accurately enumerated, zircon crystals have been found at the 233.2 million-year-old archaeological site of Santa Maria.
“The oldest known site from which dinosaurs have been recovered so far is the Santa Maria Formation in Rio Grande do Sul, Brazil, where local zircon crystals have been radioactively dated to about 233.2 million years ago, placing them in the Late Triassic.” another says.
Researchers at the Dinorigin Project, who found the fossils, have been waiting for Guinness recognition since November 2021.
Evidence of Saturnalia tupiniquim, Nhandumirim waldsangae, Buriolestes schultzi, Pampadromaeus barberenai, Bagualosaurusacuteensis, Gnathovorax cabreirai and Staurikosaurus pricei has been found in Santa Maria.
Known as sauropodomorphs (which later gave rise to giant sauropods), they were all small, bipedal, herbivores, with the exception of the storicosaurus, harirasaurus, and buriolestes, which are carnivores exclusively among the sauropodomorphs.
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