
Scientists have discovered a new species of dinosaur in Mongolia`s Gobi Desert. Called Duonychus tsogtbaatari, the dinosaur has 2-foot-long clawed fingers on each hand, one fewer than its fellow Therizinosauria, writes NBC NEWS.
Duonychus, which means "two claws" in Greek, stood about 10 feet tall and weighed roughly 570 pounds and belonged to the group of dinosaurs called Therizinosaurs, which were characterized by an odd set of traits: huge claws believed to have been used to shear leaves off trees, leaf-shaped teeth, backward-facing hip bones and a long neck ending in a small head, and it was covered in down and quill-like feathers.
"It kind of blew my mind", the lead author of a study published Tuesday in the journal iScience, Yoshitsugu Kobayashi, an associate professor at the Hokkaido University Museum, told NBC News. "I felt this rush of excitement, like, `Wait… am I actually looking at something completely new here?`"
Therizinosaurs were already the “weirdest dinosaurs out there," Kobayashi said. "Duonychus takes that weirdness and pushes it further. It`s like evolution said, ‘Let’s try something different,` and just ran with it". Therizinosaurs lived in Asia and North America during the Cretaceous Period, 145 million to 66 million years ago. Despite having only two claws, Duonychus was an “effective grasper” that could reach branches or swaths of vegetation up to nearly 5 inches in diameter.
"Dinosaurs weren`t just stuck in one body plan - they were constantly experimenting, evolving, doing weird stuff", Kobayashi added, calling them "total oddballs".
Though Therizinosaurs were part of the theropod group, which included meat-eaters like Tyrannosaurus and Spinosaurus, Duonychus mainly ate leaves from large shrubs and trees.