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  2. Equus (genus) - Wikipedia

    en.wikipedia.org/wiki/Equus_(genus)

    The genus appears to have spread quickly into the Old World, with the similarly aged E. livenzovensis documented from western Europe and Russia. [11] Molecular phylogenies indicate that the most recent common ancestor of all modern equines (members of the genus Equus) lived ~5.6 (3.9-7.8) Mya.

  3. Haringtonhippus - Wikipedia

    en.wikipedia.org/wiki/Haringtonhippus

    Haringtonhippus is named after Charles Richard Harington. [3] It was originally described as a new Equus species, E. francisci, in 1915. [1] Dalquest (1979) considered Equus tau Owen, 1869, described from teeth in Mexico, a senior synonym of E. francisci, [7] while Equus quinni and E. arrelanoi were synonymized with E. francisci by Winans (1989). [8]

  4. Equus lenensis - Wikipedia

    en.wikipedia.org/wiki/Equus_lenensis

    Remains attributed to the species display a considerable range of morphological variability. [9] The species had a small body size, with adult individuals estimated to have a body mass of around 300–365 kilograms (661–805 lb), [3] with the mummy of an 8 year old adult male horse (the Selerikan mummy) having a height of 1.35 metres (4 ft 5 in) at the withers.

  5. Taxonomic rank - Wikipedia

    en.wikipedia.org/wiki/Taxonomic_rank

    A taxon is usually assigned a rank when it is given its formal name. The basic ranks are species and genus. When an organism is given a species name it is assigned to a genus, and the genus name is part of the species name. The species name is also called a binomial, that is, a two-term name.

  6. Identification key - Wikipedia

    en.wikipedia.org/wiki/Identification_key

    In biology, an identification key, taxonomic key, or frequently just key, is a printed or computer-aided device that aids in the identification of biological organisms. Historically, the most common type of identification key is the dichotomous key , a type of single-access key which offers a fixed sequence of identification steps, each with ...

  7. Evolution of the horse - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_the_horse

    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. Paleozoologists have been able to piece together a more complete outline of the evolutionary lineage of the modern horse than of any other animal.

  8. Hippidion - Wikipedia

    en.wikipedia.org/wiki/Hippidion

    Hippidion (meaning little horse) is an extinct genus of equine that lived in South America from the Late Pliocene to the end of the Late Pleistocene , between 2.5 million and 11,000 years ago. They were one of two lineages of equines native to South America during the Pleistocene epoch, alongside Equus (Amerhippus) neogeus .

  9. Nannippus - Wikipedia

    en.wikipedia.org/wiki/Nannippus

    Nannippus is an extinct genus of three-toed horse endemic to North America during the Miocene through Pleistocene, about 13.3—1.8 million years ago (Mya), living around 11.5 million years. [ 1 ] [ 2 ] [ 3 ] This ancient species of three-toed horse grew up to 3.5 feet (1.1 meters) and weighed between 165 pounds to 199 pounds, which was around ...