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This list of mammals of Oklahoma lists all wild mammal species recorded in the state of Oklahoma. [ 1 ] [ 2 ] [ 3 ] This includes mammals that are extirpated from the state and species introduced into the state.
This is a list of species of fauna that have been observed in the U.S. state of Oklahoma. This list is incomplete ; you can help by adding missing items . ( February 2011 )
Cervalces latifrons, the broad-fronted moose, or the giant moose [3] was a giant species of deer that inhabited Europe and Asia during the Pleistocene epoch. It is thought to be the ancestor of the modern moose, as well as the extinct North American Cervalces scotti. It was considerably larger than living moose, placing it as one of the largest ...
Cervalces scotti reached 2.5 m (8.2 ft) in length and a weight of 708.5 kg (1,562 lb). [ 4 ] [ 5 ] The stag-moose resided in North America during an era with other megafauna such as the woolly mammoth , ground sloth , long horn bison , and saber toothed cat . [ 6 ]
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Their primitive synapsid and therapsid ancestors were very large (between 5–8 ft (1.5–2.4 m)) but cynodonts gradually decreased in size (to 1.5–5 ft (0.46–1.52 m)) even before the Permian-Triassic extinction event, probably due to competition with other therapsids.
An evolutionary tree (of Amniota, for example, the last common ancestor of mammals and reptiles, and all its descendants) illustrates the initial conditions causing evolutionary patterns of similarity (e.g., all Amniotes produce an egg that possesses the amnios) and the patterns of divergence amongst lineages (e.g., mammals and reptiles ...
Wild rabbits have a larger ratio of brain-to-body size, while domestic rabbits have a smaller amygdala and larger medial prefrontal cortex and also reduced white matter. This causes domestic rabbits to have a decreased fight-or-flight response and thus domesticated rabbits show less indication of fear towards humans. [ 8 ]