Luristan bronze by most families. Taking the groups in what is now generally considered to be their broad chronological sequence, the first are the "animal finials", with two rampant confronted animals, generally a pair of large-horned ibex (or goats or mouflon sheep) or felines, facing each other with a central tube or open rings (formed at the junctions of their front and hind feet) between them. The bezoar ibex ("capra aegagrus aegagrusis"), the local wild species of goat or ibex, was already domesticated millennia before; it has large curved horns with knobbly ribs. Compared to later types, the animals are more naturalistic,
Wild horse stock from which domesticated horses are descended. The horse family Equidae and the genus "Equus" evolved in North America, before the species moved into the Eastern Hemisphere. Studies using ancient DNA, as well as DNA of recent individuals, show the presence of two closely related horse species in North America, the wild horse and "Haringtonhippus francisci", the "New World stilt-legged horse"; the latter has been taxonomically assigned to various names. Currently, three subspecies that lived during recorded human history are recognized. One subspecies is the widespread domestic horse ("Equus ferus caballus"), as well as two wild subspecies: the recently extinct