Hyracotherium (/ˌhaɪrəkoʊˈθɪəriəm, -kə-/ HY-rək-o-THEER-ee-əm; "hyrax-like beast") is an extinct genus of very small (about 60 cm in length) perissodactyl...

only species is E. angustidens, which was long considered a species of Hyracotherium. Its remains have been identified in North America and date to the Early...

referred to in earlier literature as Hyracotherium sandrae, but Froehlich, arguing that the traditional genus Hyracotherium was not monophyletic, reassigned...

(Cope, 1881) †P. montanum Wortman, 18961 Synonyms Hyracotherium venticolum Cope, 1881 Hyracotherium vasacciense venticolum Kitts, 1956 Eohippus venticolum...

developed a hoof at this point, rather it still had pads as seen in Hyracotherium and Orohippus. The face of Mesohippus was longer and larger than earlier...

in the tropics and subtropics today.[citation needed] Moeritherium Hyracotherium Brontotherium Basilosaurus Andrewsarchus Borealosuchus Gastornis Pakicetus...

pre-existing species. For example, it is sometimes claimed that the extinct Hyracotherium, which was an early horse that shares a common ancestor with the modern...

early Eocene, 54 million years ago. They had been assigned to the genus Hyracotherium, but the type species of that genus is now considered not a member of...

present day. The earliest known member of the family Equidae was the Hyracotherium, which lived between 45 and 55 million years ago, during the Eocene...

bulkier version of its contemporary, the horse-like palaeothere Hyracotherium. Like Hyracotherium, it ate leaves and had five-toed front legs and three-toed...

Eocene epoch, 54 million years ago. They were once assigned to the genus Hyracotherium, but the type species of that genus is now regarded as a palaeothere...

Hippomorpha Family: †Palaeotheriidae Bonaparte, 1850 Genera Anchilophus Hyracotherium Idiodontherium Leptolophus Lijiangia Lophiotherium Pachynolophus Palaeotherium...

different from Hyracotherium and a basal perissodactyl. It was later believed to be an equid and referred to Hyracotherium (Hyracotherium tapirinum, incl...

Biology, 1:139–185. MacFadden, B. J. 1986. Fossil horses from “Eohippus” (Hyracotherium) to Equus: scaling, Cope's Law, and the evolution of body size. Paleobiology...

Ma – 45 Ma Early Eocene First creodonts. Earliest equid, Eohippus or Hyracotherium. First perching birds. First bats. The Andes begin to rise. Divergence...

Pellucidarian equivalent are known. It first appeared in At the Earth's Core. Hyracotherium (Orthopi) – It first appeared in At the Earth's Core. Ichthyosaurus...

new exhibit of fossil bones opened in 1957, and displayed fossils of Hyracotherium, a horse ancestor, and Coryphodon, a large hippo-like animal that lived...

that helped trace the evolution of the horse from the small 5-toed Hyracotherium of the Eocene to the much larger single-toed modern horses of the genus...

(phylogeny). This evolutionary sequence starts with a small animal called Hyracotherium (commonly referred to as Eohippus), which lived in North America about...

Allosaurus, Cynodont, Thrinaxodon, Eomaia, Carpolestes, Diatryma, Hyracotherium and Hyaenodontid. This episode chronicles primates that would evolve...

forming the earliest stages in the evolution of the horse, coming below Hyracotherium (see Equidae). As ancestors of the artiodactyl section of the Ungulata...

Huerfano Formation Stratigraphic range: Paleogene Hyracotherium vasacciense (fossil horse) from the Huerfano Formation, Lower Eocene Type Formation Location...

Family Pachynolophidae Superfamily Equoidea Family Palaeotheriidae Genus Hyracotherium Genus Propalaeotherium Genus Palaeotherium Family Equidae Genus Miohippus...

been preserved. For example, it is sometimes claimed that the extinct Hyracotherium (an ancient horse-like animal commonly known as an eohippus) is pseudoextinct...

horse to illustrate this point, as the unbroken connection between Hyracotherium (formerly called Eohippus) and Equus provides an apparent linear path...

of Elephas antiquus from Upnor. B.M.N.H. monograph. 1932. The genus Hyracotherium. A revision and description of new specimens found in England. Phil...

Glires Paramys copei Macroscelidea Adapisoricidae indet. Perissodactyla Hyracotherium cf. vasacciense Placentalia Hyopsodus cf. wortmani List of fossiliferous...

Caenolambda jepseni Coryphodon armatus Coryphodon sp. Perissodactyla Hyracotherium vasacciense Minippus index Placentalia Hyopsodus cf. wortmani Hyopsodus...

†Hylobius †Hyopsodus †Hypohippus †Hypolagus †Hyrachyus †Hyracodon †Hyracotherium †Hyracotherium vasacciense †Kimbetohia Laccophilus †Lambdotherium Lemmiscus...

follows Clouter (2007). Argillotherium Coryphodon eocaenus – a pantodont Hyracotherium – a palaeothere Oxyaena – a creodont Platychoerops richardsoni - from...