Arctodus pristinus Miragaia longicollum which measured around 30 centimeters

which measured around 30 centimeters

Approximate measurements of the Sphenacodon:

Longitud hocico-cola 270 mm

Medidas aproximadas del Thalassodromeus :

including giant fish

Arctodus pristinus Miragaia longicollum which measured around 30 centimetersArctodus 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,