LION VS HYENA ANIMALS YouTube VIDEO GULP !

[postlink]http://animals-videogulp.blogspot.com/2010/09/lion-vs-hyena-animals-youtube-video.html[/postlink]http://www.youtube.com/watch?v=fMoW0pQ57mAendofvid
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LION VS HYENA ANIMALS YouTube VIDEO GULP !

GULP - HYENAS seem to have originated 26 million years ago from arboreal ancestors bearing similarities to the modern Banded Palm Civet. Plioviverrops, one of the earliest hyenas, was a lithe civet-like creature that inhabited Eurasia 20-22 million years ago. Details from the middle ear and dental structure marked it as a primitive hyena. This genus proved successful, its descendants flourishing with more pointed jowls and racier legs, much as the Canidae had done in North America.

Fifteen million years ago, dog-like hyenas flourished, with 30 different species being identified. Unlike some of their modern descendants, these hyenas were not specialized bone-crushers, but were more nimble, wolf-like animals. The dog-like hyenas had canid-like molars, allowing them to supplement their carnivorous diet with vegetation and invertebrates.[1]

Five to seven million years ago, the hyenas were outcompeted by canids traveling from North America to Eurasia via the Bering land bridge.The ancestral aardwolves survived by having adapted themselves to an insectivorous diet to which few canids had specialized. Some hyenas evolved bone-crushing teeth, which allowed them to avoid competition with the canids, resulting in the hyenas eventually outcompeting a family of similarly built bone-crushers called "percrocutoids". The percrocutoids became extinct 7 million years ago, coinciding exactly with the rise of bone-crushing hyena species.

Unlike the canids who flourished in the newly colonized Eurasian continent, only one hyena species, the cheetah-like Chasmaporthetes, managed to cross to North America. It became extinct 1.5 million years ago
from: wikipedia

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1 comments:

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