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Lost fossil 'treasure trove' rediscovered after 70 years - Livescience.com
Jun 24, 2022 1 min, 25 secs

Previous researchers were unable to record its exact coordinates.

Scientists have finally rediscovered a lost fossil site in Brazil, after the researchers who originally discovered it 70 years ago were unable to retrace their steps to the remote location.

The rediscovered site, which is known as Cerro Chato, is located near Brazil's border with Uruguay in the southern state of Rio Grande do Sul.

As a result, multiple rocky layers at Cerro Chato are chock-full of delicate fossils — especially plants, which typically do not fossilize as well as animals do because they lack hard parts.

Paleontologists who first discovered Cerro Chato in 1951 were excited by its exceptionally well-preserved Permian remains.

Unfortunately, without memorable landmarks or modern technologies, such as GPS, the researchers were unable to accurately record the exact geographical coordinates of the site, and when they attempted to return to the Permian treasure trove they could not find it.

After several attempts to retrace their steps, the team gave up the search and declared the site lost.

To date, more than 100 fossils — mostly plants, along with some fish and molluscs — have been uncovered at Cerro Chato by the original team and by the co-authors of the new study.

When the original researchers discovered the site, they were only able to scratch the surface of Cerro Chato’s fossil deposits before they lost track of its location, and though it was rediscovered almost three years ago, there's still a lot of ground to cover.

The plant fossils at Cerro Chato could help researchers understand more about drastic climate change that took place toward the end of the Permian, which triggered an extinction event that wiped out around 90% of life on Earth.

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