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The evolution of the horse, a mammal of the family Equidae, occurred over a geologic time scale of 50 million years, transforming the small, dog-sized, [1] forest-dwelling Eohippus into the modern horse.
Equidae (commonly known as the horse family) is the taxonomic family of horses and related animals, including the extant horses, asses, and zebras, and many other species known only from fossils. The family evolved more than 50 million years ago, in the Eocene epoch, from a small, multi-toed ungulate into larger, single-toed animals.
Merychippus was the first equine to have the distinctive head shape of today's horses. The Miocene was a time of drastic change in environment, with woodlands transforming into grass plains. [ 7 ] This led to evolutionary changes in the hooves and teeth of equids .
The horse (Equus ferus caballus) [2] [3] ... Diagram of evolution in horses showing size development, biometrical changes in the cranium and reduction of toes (left ...
Pages in category "Horse history and evolution" The following 44 pages are in this category, out of 44 total. This list may not reflect recent changes. ...
The horse (Equus ferus caballus) is a domesticated, one-toed, hoofed mammal.It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus.The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, single-toed animal of today.
The true horse included prehistoric horses and the Przewalski's horse, as well as what is now the modern domestic horse, belonged to a single Holarctic species. [12] The true horse migrated from the Americas to Eurasia via Beringia, becoming broadly distributed from North America to central Europe, north and south of Pleistocene ice sheets. [12]
Equinae is a subfamily of the family Equidae, known from the Hemingfordian stage of the Early Miocene (16 million years ago) onwards. [1] [2] They originated in North America, before dispersing to every continent except Australia and Antarctica.