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These were small animals, some as small as a hare, with a slim build, lanky legs, and a long tail. Their hind legs were much longer than their front legs. The early to middle Eocene saw the emergence of the ancestors of most of today's mammals. [4] Entelodonts were stocky animals with a large head, and were characterized by bony bumps on the ...
Jaw fragments. Diacodexis is the oldest known even-toed ungulate.In life, it would have resembled a modern duiker, measuring about 50 centimetres (1.6 ft) in body length, but with a much longer tail.
The order Artiodactyla consists of 349 extant species belonging to 132 genera. This does not include hybrid species or extinct prehistoric species. Modern molecular studies indicate that the 132 genera can be grouped into 23 families; these families are grouped into named suborders and many are further grouped into named clades, and some of these families are subdivided into named subfamilies.
Amphimerycidae is an extinct family of artiodactyls that was endemic to western Europe that lived from the Middle Eocene to the Early Oligocene.With a taxonomic history extending as far back as 1804, the family was formally recognized by the Swiss palaeontologist Hans Georg Stehlin in 1910 and contains two genera: Amphimeryx and Pseudamphimeryx.
They had relatively short limbs lacking specializations associated with their relatives (e.g. reduced side digits, fused bones, and hooves), [30] and long, heavy tails. Their primitive anatomy makes it unlikely that they were able to run down prey, but with their powerful proportions, claws, and long canines, they may have been able to ...
The side digits II and V are heavily reduced. [35] As a result, Xiphodon is a didactyl, or two-toed, genus. Its side metapodials are reduced while the cuboid bone and navicular bone are not fused with each other. [24] [33] The long legs may have supported a high-hanging body.
The name Whippomorpha is a combination of English (wh[ale] + hippo[potamus]) and Greek (μορφή, morphē = form). [2]Some attempts have been made to rename the suborder Cetancodonta, due to the misleading utilization of the suffix -morpha for a crown group, [6] as well as the risk of confusion with the clade Hippomorpha (which consists of equid perissodactyls); [7] however Whippomorpha ...
Elomeryx is an extinct genus of artiodactyl ungulate, and is among the earliest known anthracotheres.The genus was extremely widespread, first being found in Asia in the middle Eocene, in Europe during the latest Eocene, and having spread to North America by the early Oligocene. [1]