Scientists say they have identified a new, unusually chicken-sized dinosaur with inflammatory features never seen before in fossil records.
The new species, Ubirajara jubatus, lived about 110 million years ago, living in present-day eastern Brazil and donating lengths of chalk under its back and stiff ribbon – probably made of keratin – coming out of its shoulder, according to a study in the journal Published Cretaceous Research.
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Researchers have predicted that features such as animal ribbons, like peacock feathers, could be used to attract mating or to intimidate opponents.
“What’s particularly unusual about the beast is that it has perhaps two stiff ribbons on either side of its shoulder that were probably used to attract the attraction, inter-male animosity or intimidation of the enemy,” said David Martil. Said.
“We cannot prove that the specimen is male, but given the differences between male and female birds, it appears that the specimen was male, and even young, which is surprising given that most complex performance abilities are reserved for adult males,” Martile said. Said. “Looking at its outburst, we can imagine that the dinosaur could have gotten involved in an extended dance to show off its display structures.”
The fossil was found in two slabs of stone, and the researchers allowed scientists to create a clear picture of the animal’s characteristics using X-rays to find previously hidden skeletal elements and soft tissues.
A portion of the long, thick mane running down the animal’s back was almost intact. The study found that dinosaur believers were controlled by potential muscles that allowed them to grow, similar to how porcupine stretches its spines when threatened. The animal’s hands were also wrapped in fur-like filaments under his hands.
Researchers say the Ubirajara Jubatus is also the first non-avian dinosaur to be found with feathers in South America.
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