Naturalist Charles Pickering was the librarian and a curator of the Academy of Natural Sciences. In 1843, he traveled to Africa and India to research human races. In 1848, Pickering published Races of Man and Their Geographical Distribution, which enumerated eleven races.
It lived from 98 to 83 million years ago, separating itself from the Velociraptor by roughly 10 million years. You might say it's an ancestor of the actual Velociraptor, even though the original specie of raptor was almost the size of modern chicken and the Achillobator was roughly 1 ft taller than the average person.
American lion (Panthera leo atrox / Panthera atrox) â skull. The body length of this predator ranged between 160-250 cm, and its average height at shoulders was 120 cm, with the weight of 250-360 kg. Thus, it was the largest known species/subspecies of the lion in the history of Earth. However, if its measurements were real, it is possible that this animal belonged to the jaguar or the tiger species.