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Paleontology of a new carnivorous dinosaur unearthed in Argentina



A new genus and species of belisaurid dinosaur named furileusaurian (just-backed lizard) Llukalkan aliocranianus Discovered by a team of paleontologists from Argentina.

Life reconstruction of Llukalkan aliocranianus. Image credit: Jorge Blanco.

Life reconstruction Llukalkan aliocranianus. Image credit: Jorge Blanco.

Llukalkan aliocranianus Roaming our planet in the late Cretaceous period about 80 million years ago.

Dinosaurs are a member of the A family, which is a family of large carnivores known from the ancient supercontinent of Gondwana.

It is about 5 m (1

6.4 feet) long, bites very powerfully, has very sharp teeth, large claws, and a keen sense of smell.

It also has a strange short skull with rough bones, so in life its head is raised and protruding like some living reptiles.

“But the most distinctive feature is Llukalkan aliocranianus It is a small air-filled sinus in the middle ear area. Nothing similar has been found so far. “Said Dr. Ariel Mendez, a paleontologist at the Patagonian Institute of Geology and Paleontology.

“This means that the hearing of this dinosaur may be different from other exotic lizards, most likely better and similar to modern crocodiles.”

“This discovery implies a different hearing adaptability from other prodigies, and may be a keen sense of hearing.”

Reconstruction of the complete skull and mandible of Llukalkan aliocranianus from the Late Cretaceous in Neuquen Province, Argentina, left image. The preserved bones are in the assumed natural position, while the unreserved parts and bones are grayed out. The anterior bone of the joint has a medial position and is covered by angles and rectangles on the outside. The upper jaw, law and square correspond to the right side, although they are mirrored to fit the image. Scale bar-5 cm. Image source: Gianechini et al., doi: 10.1080 / 02724634.2020.1877151.

Rebuild complete skull and mandible Llukalkan aliocranianus, From the Late Cretaceous in Neuquen, Argentina, left view. The preserved bones are in the assumed natural position, while the unreserved parts and bones are grayed out. The anterior bone of the joint has a medial position and is covered by angles and rectangles on the outside. The upper jaw, law and square correspond to the right side, although they are mirrored to fit the image. Scale bar-5 cm. Image source: Gianechini Wait. , Doi: 10.1080 / 02724634.2020.1877151.

Fossil skull remains Llukalkan aliocranianus Extracted from the Bajo de la Carpa formation in the La Invernada fossil area in Patagonia, northwestern Argentina.

According to the research team, ancient predators Lively Exoni, Is another furileusaurian abelisaurid of the Bajo de la Carpa formation.

“This is a particularly important discovery, because it shows that the diversity and richness of Pseudo-Berosaurus is not only significant throughout Patagonia but also during the twilight period of the dinosaurs,” National Paleontologist of the United States Said Dr. Federico Gianicini. Saint Louis University.

Llukalkan aliocranianus In many ways with Lively ExoniIn addition to being smaller, in addition to other differences, the hole in the skull through which the vein passes is larger, and the distance from the supraoccipital c is greater.

Dr. Gianecini said: “This discovery also shows that we may not have found more whiteflies, so we will look for other new species and have a better understanding of the relationship between Furursaurs.”

Discovery Llukalkan aliocranianus According to a report published in a paper this week Journal of vertebrate paleontology.

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Federico A. Gianechini Wait. New Furileusaurian Abelisaurid from La Invernada (Upper Cretaceous, Santona, Bajo De La Carpa) in Patagonia, northern Argentina. Journal of vertebrate paleontology, Published online on March 30, 2021; doi: 10.1080 / 02724634.2020.1877151


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