Arctodus pristinus Edaphosaurus También se encontraron restos microscópicos

También se encontraron restos microscópicos de tejido blando y fibras de colágeno en la superficie de algunos dientes de Tyrannosaurus rex

Height 137mm

ya que no aparece en los ejemplares identificados como hembras

Escala 1:20 - 310 mm largo (Kit de Montaje)

Although they had already moved considerably away from their terrestrial ancestors

Arctodus pristinus Edaphosaurus También se encontraron restos microscópicosArctodus 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,