Friday , May 14 2021

A new and fierce dinosaur predator unearthed in Patagonia



An excavation in Argentina revealed a previously undiscovered dinosaur species, and the tyrannosaur-like predator was given a name that would fit what we know about it so far: Llukalkan aliocranianus, Or ‘the one who causes fear’.

Able to grow as long as an elephant, and with sharp teeth and a powerful bite, L. aliocranianus Undoubtedly it was a frightening sight for any other creature that happened to it in the Late Cretaceous, leading to the extinction of the dinosaurs 66 million years ago.

The new species are oblisaurids, although they probably had better hearing (similar to the modern crocodile) than the other nine species in the family found so far. Researchers say the dinosaur had huge claws in its legs, and a sharp sense of smell.

Dinu 2Impression of the artist from Llukalkan aliocranianus. (Jorge Blanco and the Journal of Paleontology of Vertebrae)

“This is a particularly important discovery because it suggests that the variety and abundance of abalizaurs was astounding, not only throughout Patagonia, but also in more local areas during the Dinosaur Twilight,” says paleontologist Federico Gianquini, of the National University of San. Luis in Argentina.

Patagonia and other regions of the ancient supercontinent of Gondwana – now divided into Africa, India, Antarctica, Australia and South America – were the place where the alysaurids roamed.

While their short mothers gave them a similar appearance T-Rex, They had unusually short and deep skulls, often bearing peaks, bumps and horns. This particular doom had bumps on his head similar to Gila’s monster lizard.

The researchers determined this L. aliocranianus Shared the same part of the world at the same time as another Abyssalid, Exxon broadcasterEven though the new species was smaller.

“These dinosaurs were still trying new evolutionary paths and were rapidly diversifying before they died completely,” says paleontologist Ariel Mendez, of the Patagonian Institute of Geology and Paleontology in Argentina.

Dinu 3Skull of Llukalkan aliocranianus. (Journal of Vertebrate Paleontology)

Some of the fossilized remains of ‘Who Causes Fear’ include the cerebral cortex, which features a unique feature among obelisors: a small sinus in the posterior air in the middle ear area, which helped with that croc-like hearing.

This hearing may have improved the dinosaur’s abilities as a predator, and the research team says that both L. aliocranianus and V. exxoni Was among the most dangerous meat eaters of the time.

ujvp a 1877151 f0001 ocMap and photos showing where the specimen is in Argentina. (Gianechini et al., Journal of Vertebrate Paleontology, 2021)

There is probably more to be found in the area, from about 80 million years ago – a period that seemed to have flourished for the alyssaurids and furylazors (‘tough lizards’) that made up this part of the family.

“This discovery suggests that there are probably more elizorides there that we have not yet found, so we will look for other new species and a better understanding of the connection between forlizaurs,” Giankini says.

The study was published in Journal of Paleontology of Vertebrae.


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