According to a new research, a pre-reptile was the first creature in the world to stand on all four limbs. The new research is contrary to popular theories indicating that the creatures moved like lizards around the surface of the earth during that time.

The researchers discoveredthe pareiasaursBunostegosakokanensis that is believed to have walked upright on all fours like a cow or a hippo. This makes it the oldest recognized creature to have walked on all four limbs.Brown College's Morgan Turner, a co-author on the research, said that they found that the creature did not crawl on the surface but walked.

Turner said, "Numerous the animals that lived across the time had an identical upright or semi-upright hind limb posture. However what's fascinating and particular about Bunostegos is the forelimb, in that its anatomy is sprawling-precluding and seemingly directed beneath its physique, in contrast to anything on the time. Sprawling" posture describes the best way lizards' legs come out of their our bodies, horizontally within the higher a part of the limb, and vertically from the joint right down to the bottom."

Turner and her co-authors characterized shoulder joint, humerus, knee-like elbow hinge and and an extended ulna that are seemed essential for the creature to walk like cows. They concluded that this shows that the Bunostegos was able to walk on the surface on the Earth.