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Surprising Finding in La Rioja: a Giant Crocodile Ancestor of 237 Million Years Ago

Buenos Aires, 9 June (NA) -- A team of specialists from the National Council of Scientific and Technical Research (CONICET) reported the discovery of a new genus and species of paracrocodilomorph: Shakajlura riojanensis, that is, “Lizarto Blissado de La Rioja”, a reptile that lived 237 million years ago. The work was published today in Papers in Palaeontology magazine. According to the Argentine News Agency, the finding occurred in the Chañares …
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The Shakajlura riojanensis was a gigantic reptile that inhabited what today is La Rioja long before the great carnivorous dinosaurs dominated the Earth, when the kings of the planet were the fearful reptiles. This riojan reptile lived about 237 million years ago, during the Middle-Tardy Triassic. At that time, the dinosaurs already had some small ancestors, but they were not yet the great hunters that would appear much later. Therefore, animals …

The discovery has worldwide relevance and places the province as an international reference for paleontological studies.

The discovery has worldwide relevance and places the province as an international reference for paleontological studies.

·Argentina
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It was discovered the Shakajlura riojanensis, a reptile six meters long, ancestor of the crocodiles, that lived 237 million years ago in La Rioja. It was described a new species of the group Pacrocodylomorpha, ancestors of the crocodiles, of the Middle-Tardium Triassic. The finding was made in the Talampaya National Park, in outcrops that correspond to the Chañares Formation, which date from 237 million years ago. See this publication on Instagr…

During the Middle-Tardium Triassic, some 237 million years ago, when the great carnivorous dinosaurs still did not exist, the reptiles of the Paracrocodylomorpha group – quadrupeds between 4 and 10 meters long–, distant relatives of the current crocodiles, were the largest and most fearsome predators. In a paper published today in the magazine Papers in Palaeontology, a research team of CONICET, made up of experts from La Plata, La Rioja and the…

Buenos Aires, 9 June (NA) -- A team of specialists from the National Council of Scientific and Technical Research (CONICET) reported the discovery of a new genus and species of paracrocodilomorph: Shakajlura riojanensis, that is, “Lizarto Blissado de La Rioja”, a reptile that lived 237 million years ago. The work was published today in Papers in Palaeontology magazine. According to the Argentine News Agency, the finding occurred in the Chañares …

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Noticias Argentinas | Agencia de noticias broke the news on Tuesday, June 9, 2026.
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