such as the sauropod Giraffatitan and the theropod Allosaurus

providing an additional form of protection or perhaps a role in thermal regulation

Tarbosaurus bataar was a theropod dinosaur that lived during the Cretaceous period

within the Besano Formation

Although it shared some characteristics with modern amphibians

Arctodus pristinus Asfaltovenator such as the sauropod GiraffatitanArctodus 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,