They find in Uruguay fossil remains older than those of dinosaurs

They find in Uruguay fossil remains older than those of dinosaurs

The Uruguayan archaeologists They have found fossil remains of almost 130 million years ago in the fossil deposits of the South American country. This dating the would grant greater antiquity than that of the dinosaur remains that populated the planet millions of years ago. This is to say that they belong to the Gondwana, the southern continental bloc that emerged after the first separation of the Pangea.

The project is led by the Uruguayan paleontologist Graciela Pineiro, who several weeks ago presented the findings of the oldest reptile embryo fossils ever found on the planet.

The latest find is a species consisting of two articulated mandibular branches, in which each one has the trigeminal nerve and capillaries. Piñeiro explains: “We have not found a single reference that has previously registered a preservation of similar peculiarity and spectacularity”.

This feature is what makes the discovery so unique. No fossil record has similar remains. For the paleontologist, the new finding means being able to go further. With the new discoveries, experts will be able to “go one step further" Y meet animals that lived almost 300 million years ago in a hostile environment: “What we discover allows us to know aspects of behavior that are not very fossilized. That is, how they ate, how they reproduced, how they adapted so well to an environment that is not very favorable to life, such as a very salty lake with little oxygen”.

The place where the fossil remains have been found is known as "Konservat Lagerstätte”. Are fossil beds where, under very specific conditions, structures are preserved that normally would not do so elsewhere. The fossils found by the research team were in a set of rocks from more than 280 million years ago called "Mangrullo”. This would cover the areas of Tacuarembó, Cerro Largo and Rivera, although the rocks extend to Brazil. Piñeiro comments: “We do not do excavations, we work on the Mangrullo rocks on the surface. These rocks continue in Brazil and that is why we work together with geologists and paleontologists from that country”.

Following the recent find, the Uruguay deposit is the oldest in South America and the second largest in the world. The reconstruction of the place in the that animals lived 280 million years ago It is funded by the National Agency for Research and Innovation (ANII) of Uruguay and the results will be published in various scientific journals around the world.

Passionate about History, he has a degree in Journalism and Audiovisual Communication. Since he was little he loved History and ended up exploring the 18th, 19th and 20th centuries above all.


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