A new member of the Megaraptran Dinosaur family was discovered by a team of excavation scientists from Argentina and the United States.
The types of new dinosaurs lived in what Patagonia now known as Argentina, during the last part of the Cretaceous period, between 70 and 67 million years.
It is called a name Joaquinraptor CasaliThe old predator was a higher predator in the area.
It belongs to Megaraptora, a group of dinosaurs enjoyed by the well -known large meat of the Cretaceous period in Asia and Australia, especially South America.
“Megatorion was meat dinosaurs with stretched skulls and strong helpers with large claws across Asia, Australia and South America,” said Dr. Lucio Eriko, San Juan Bosco University, San Juan Bosco University colleagues.
“However, our understanding of this group hinders the lack of full excavations.”
A good and partially preserved skeleton Joaquinraptor Casali Central central pages
The sample included a lot of the skull of dinosaurs, the front and back, ribs and vertebrae.
Depending on the bone microscopic structure, fossil scientists indicate that the sample is an adult, but may not grow completely.
Establishing from other remains Joaquinraptor Casali It may be about 7 meters long and weighs more than 1000 kg.
The sedimentary evidence indicates that these dinosaurs lived in a warm and humid environment in the flood.
“The presence of the crocodile bone, compressed fossils against the lower jaws Joaquinraptor Casali “It gives hints about nutrition behavior and indicates that it may have been a predator in the region,” the researchers said.
“However, more research is needed to provide more ideas about her behavior and environmental role.”
According to the scholars, Joaquinraptor Casali Other Megasphants survived as dominant predators in this region of South America before extinction at the end of the Cretaceous period with other non -automatic dinosaurs.
They said: “It seems that the megaptoride in South America has achieved greater sizes for the body (7 meters or more in the total body length) of their old relatives in general from Australia (5-6 m).”
“Patagonian Megaraptorids may continue to increase in size during the remaining period of its evolutionary date – perhaps partially stimulates at least through the extinction of Carcharodontosaurids during the Torron – with some recent chalk forms that are likely to reach the body length of 9 meters or more.”
“Among other benefits, this may have allowed Miguptorides to occupy the predator ports in Apix in their habitats.”
“Moreover, as it is clear from Mastichitan (maybe the late Mastercity) Joaquinraptor CasaliThey may have survived to the borders of the Cretaceous era, just for accusation alongside all other non-automatic dinosaurs. “
discovery Joaquinraptor Casali Described in a paper Posted in the magazine Nature Communications.
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LM Ibiricu And others. 2025. The latest Megaraptorid Clooride sheds light on the development of Megartorne and biology. Nat Common 16, 8298; Second: 10.1038/S41467-025-63793-5