It has long been known that modern birds evolved from certain types of dinosaurs that lived millions of years ago. Therefore, scientists turned to the remains of the latter to explain some of the structural features of birds.
“At the front end of a bird’s wing is a structure called the propatagium, which contains a muscle that connects the shoulder and wrist and makes it possible to fly by helping to flap the wings,” the scientists said. This structure is not found in other vertebrates.
But it was found in a group of dinosaurs known as maniraptors, including the famous velociraptor. Researchers have detected propatagium in preserved dinosaur soft tissue fossils.
Source: Ferra
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