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Extinct equids restored to scale. Left to right: Mesohippus, Neohipparion, Eohippus, Equus scotti and Hypohippus. Wild horses have been known since prehistory from central Asia to Europe, with domestic horses and other equids being distributed more widely in the Old World, but no horses or equids of any type were found in the New World when European explorers reached the Americas.
Beginning of animal evolution. [54] [55] 720–630 Ma Possible global glaciation [56] [57] which increased the atmospheric oxygen and decreased carbon dioxide, and was either caused by land plant evolution [58] or resulted in it. [59] Opinion is divided on whether it increased or decreased biodiversity or the rate of evolution. [60] [61] [62 ...
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.
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 word equus is Latin for "horse" [4] and is cognate with the Greek ἵππος (hippos, "horse") [5] and Mycenaean Greek i-qo /ikkʷos/, the earliest attested variant of the Greek word, written in Linear B syllabic script. [6] Compare the alternative development of the Proto-Greek labiovelar in Ionic ἴκκος (ikkos). [5] [7]
The word pedigree is a corruption of the Anglo-Norman French pé de grue or "crane's foot", either because the typical lines and split lines (each split leading to different offspring of the one parent line) resemble the thin leg and foot of a crane [3] or because such a mark was used to denote succession in pedigree charts. [4]
Hack, a basic riding horse, particularly in the UK, also includes Show hack horses used in competition. Heavy warmblood, heavy carriage and riding horses, predecessors to the modern warmbloods, several old-style breeds still in existence today. Hunter, a type of jumping horse, either a show hunter or a field hunter
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.