Illustration of Duonychus Tsogtbaatari, a Cretaceous dinosaur
Masato Hattori
A new species dinosaur A fully preserved claw that has never been found in a Mongolian building area. Bipedal, herbivorous herbivor had only two fingers in each hand, had to use the branches and to get out of his mouth.
90 million fossils – parts of the pelvis, two arms and numerous hands and vertebrates near KhanboGD, in Gobi Desert, but now he has learned that the scientific name is correctly Duonychus tsogtbaatari. The name of the genre means “two claws” and the name of the species honors the Mongolian paleontologist Khishigjav Tsogtbaatar.
Duonychus It is a smaller relative TerizinosaurusFeatures in the film Jurassic World Dominion. Yoshitsugu kobayashi The Japanese University of Hokkaido and his colleagues would be about 3 meters that esteemed the dinosaur and weighed approximately 270 kilograms.
“Discovery Duonychus tsogtbaatari It’s a great thing because it only has two fingers, “says Kobayashi.” Most teropods, including other terizinosaurs, kept three functional toes, so that he lost a digit is quite unexpected. “
Totally, five theropod evolved only two fingers, the most famous Tirannosaurus.
DuonychusThe claws are nearly 30 centimeters long. Unusual, claw belts – made of keratin, maintained the same material of our nails.
“Keratin usually does not fossilize. It is much disintegrated than the bones,” says Kobayashi. “Most of the time, when we find dinosaur claws, we look at Bony Core. But in life, the real claw would be covered with a thick keratin, becoming longer and curved.”
Team member Darla Zelenitsky At the University of Calgaryko, Canada, two finger-terizinosaurs found it very amazing: “We liked it, wow, that is really one of these curiosities.”
Duonychus tsogtbaatari claws
Kobayashi et al
“This is the biggest 3D Dinosaur claw of the distance,” he noted. “This claw is not a fossils that preserve bones that keep bones in the bone, this claw is three-dimensional and is a belt around the underlying bone, similar to what we see in dogs and cats.”
Researchers believe that the claws looked at the claws and had an adaptation of falling vegetation. With fewer fingers, each might be stronger and more flexible, allowing the grip more narrower and controlled, says Kobayashi.
“Curved claws and extreme flexions suggest that they can easily associate the branches of leaves or clusters,” he noted. “Three fingers arrived on the way, twice were more accurate and more effective.”
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