A fossil dinosaur with a single finger and big claws on each hand are found in China. The scientists claim, the fossil is a species Linhenykus monodactylus. Linhenykus monodactylus including alvarezsuroids group, which is a branch of the theropod family who ate meat. Higher animals only reach two feet and weigh as well as a large parrot.
Different from other theropod family, such as Tyrannosaurus rex and Velocireptor, Linhenykus only have one finger on each hand, has large paws. Scientists from University College London, Michael Pittman, explains, "theropod that do not have the character of birds originally had five fingers, but then evolved into just three fingers."
"Tyrannosaurus was also quite strange because it only has two fingers but Linhenykus that have only one finger to show how the complexity of the modification of the theropod hand,"said Michael Pittman. Some Linhenykus framework, the estimated age of 75 to 84 million years old, found near the town of Linhe, Mongolia.
According to Dr Jonah Choiniere of the American Museum of National History, "Degeneration of the structure, such as legs on whales and snakes, can appear and disappear randomly in the process of evolution." Linhenykus coexist with other theropod families who have similar size, as well as small mammals and lizards.