Next come the Rupicaprinae, which include several genera of mountain-dwelling ruminants, typified by the European chamois (Rupicapra); the other genera being the Asiatic serow, goral and takin, and the North American Rocky Mountain goat.
In the structure of its horns the North American white Rocky Mountain goat (Oreamnus) is very like a serow, from which it differs by its extremely short cannon-bones.
The Rocky Mountain goat of America has no claim to be regarded as a member of the goat-group.
It is remarkable for the shortness of the cannonbones of the legs, in which it resembles the Rocky Mountain goat.
Possibly the Arctic musk-ox (Ovibos) may be connected with the takin by means of certain extinct ruminants, such as the North American Pleistocene Euceratherium and the European Pliocene Criotherium (see Chamois, Goral, Serow, Rocky Mountain Goat and Takin).
