Arctodus simus Platecarpus hace aproximadamente entre 76 y

hace aproximadamente entre 76 y 73 millones de años

pero se especula que estaba cubierta de escamas o una especie de piel rugosa

8 millones de años y hace 30

specifically in the Kimmeridgian and Tithonian

Arctodus simus Platecarpus hace aproximadamente entre 76 yArctodus simus , commonly known as the short faced bear, was one of the largest terrestrial carnivores of the Pleistocene of North America. This extinct member of the subfamily Tremarctinae inhabited a wide range of ecosystems, from the central plains to the northern forests of the continent, between approximately 800,000 and 11,000 years before present. Its highly specialized morphology has been the subject of intense debate surrounding its trophic