Equus (genus)
Equus is a genus of mammals in the family Equidae, which includes horses, donkeys, and zebras. Within Equidae, "Equus" is the only recognized extant genus, comprising seven living species. The term equine refers to any member of this genus, including horses. Like Equidae more broadly, "Equus" has numerous extinct species known only from fossils. The genus most likely originated in North America and spread quickly to the Old World. Equines are odd-toed ungulates with slender legs, long heads, relatively long necks, manes (erect in most subspecies), and long tails. All species are herbivorous, and mostly grazers, with simpler digestive systems than ruminants, but able to subsist on lower-quality vegetation.
Epictinae
Epictinae (commonly called slender blind snakes or threadsnakes) are a subfamily of snakes found in the New World and equatorial Africa. Members of this subfamily tend to have short, thick tails, and the fewest subcaudal scales. It comprises two tribes, three subtribes, nine genera, and 86 species.The subfamily is distributed in the New World and in equatorial Africa. In the New World it
ranges from North America (California, Utah, and Kansas) south through Middle and South America
(exclusive of the high Andes) to Uruguay and Argentina on the Atlantic side. It also occurs on San Salvador
Island (Bahamas), Hispaniola, the Lesser Antilles, Cozumel Island (Mexico), Islas de Bahia and Swan Islands
(Honduras), San Andres and Providencia Islands (Colombia), Bonaire, Margarita Islands, and Trinidad. It also
occurs in equatorial Africa, from southern Senegal, Guinea, and Bioko Island in the west to Ethiopia in the
east.