Its hollow bones and light body structure allowed it to fly for long periods of time and cover great distances in search of food

muscular legs were adapted for running

Height 41 mm

largas y robustas

Edmontosaurus and Gryposaurus

Arctodus pristinus creature studio Its hollow bones and lightArctodus pristinus is an extinct species of short faced bear belonging to the genus Arctodus , which lived in North America during the Pleistocene, approximately between 2. 5 million and 10,000 years ago. It was a close relative of Arctodus simus , although smaller in size and with some morphological differences in its skeleton that suggest different ecological adaptations. Its fossil remains have been found mainly in the southeastern United States,