That’s what scientists have interpreted from the pose of the dinosaur’s fossil skeleton. The study authors identified it as an alvarezsaurid, a type of small theropod (bipedal meat-eating dinosaur) with a long tail and legs and short front limbs. Alvarezsaurids are part of a larger dinosaur group called maniraptorans, which includes birds and birdlike dinosaurs that were their closest relatives. (A) A photo of the fossil skeleton found in the Gobi Desert in Mongolia. Kohta KuboThe new fossil suggests that this sleeping behavior may have been more common than expected among the non-avian relatives of the earliest birds, the researchers reported.

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Persons: Sinornithoides, Jaculinykus yaruui, Kohta Kubo, “, ”, Dr, Jingmai O’Connor, ” O’Connor, ” Kubo, Jaculinykus, Shuvuuia deserti, Kubo, Kobu, ” Mindy Weisberger Organizations: CNN, Field, Paleobiology Research, Hokkaido University, Scientific Locations: Mongolia, Chicago, Jaculus, yaruu, Japan, alvarezsaurs