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| - Miacis is an extinct genus of mammals that appeared in the late Paleocene (ca. 60-55 million years ago) and are mammals of the family Miacidae, superfamily Miacoidea. They are representative of the group of early carnivores that were the ancestors of the modern Order Carnivora, although only the species Miacis cognitus is a true carnivoran.[vague] Thus, Miacis may be considered the genus of carnivorous mammals that gave rise to all modern Carnivora. Miacis was five-clawed, about the size of a weasel (~30 cm), and lived on the North American and European continents. They retained some of the primitive characteristics that were present in the Creodonts, the sister order of Carnivora, such as low skulls, long slender bodies, long tails, and short legs. It retained the same number of teeth, 44
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| abstract
| - Miacis is an extinct genus of mammals that appeared in the late Paleocene (ca. 60-55 million years ago) and are mammals of the family Miacidae, superfamily Miacoidea. They are representative of the group of early carnivores that were the ancestors of the modern Order Carnivora, although only the species Miacis cognitus is a true carnivoran.[vague] Thus, Miacis may be considered the genus of carnivorous mammals that gave rise to all modern Carnivora. Miacis was five-clawed, about the size of a weasel (~30 cm), and lived on the North American and European continents. They retained some of the primitive characteristics that were present in the Creodonts, the sister order of Carnivora, such as low skulls, long slender bodies, long tails, and short legs. It retained the same number of teeth, 44, although some reductions in this number were apparently in progress and some of the teeth were reduced in size. The hind limbs were longer than the forelimbs, the pelvis was very doglike in form and structure, and some specialized traits were present in the vertebrae. It had retractable claws, agile joints for climbing, and binocular vision. Miacis and related forms had brains that were relatively larger than those of the creodonts, and the increase in brain size as compared with body size probably reflects an increase in intelligence. Like many other early carnivorans, it was well suited for an arboreal climbing lifestyle with needle sharp claws, and had limbs and joints that resemble those of modern carnivorans. Miacis was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits.
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