The quagga is an extinct subspecies of the plains zebra which was endemic to South Africa until it was hunted to extinction in the late 19th century. It was long thought to be a distinct species, but
1889 illustration of a quagga (lower left) alongside other equines
Painting of a stallion in Louis XVI's menagerie at Versailles by Nicolas Maréchal, 1793
1858 illustration of a herd
Equus is a genus of mammals in the perissodactyl family Equidae, which includes horses, asses, and zebras. Within the Equidae, Equus is the only recognized extant genus, comprising seven living specie
A mule (horse and donkey hybrid)
From left to right: a cranium, a complete skeleton, a left forefoot frontal, and a left forefoot lateral from a Grévy's zebra