Camelids are unusual in that their modern distribution is almost a mirror-image of their origin. Camelids first appeared very early in the evolution of the even-toed ungulates, around 45 million years ago during the middle Eocene, in present-day North America. Some of the camelids cross the Bering Straite in the Glacial epoch and arrived in Asia and then after into Africa and recently to Australia by the Afghans.The other part of the camelids family reached South America through the Isthmus of Panama. Three species groups survived: the Dromedary of northern Africa and south-west Asia; the...