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Polar Bears Descended From Brown Bears Relatively Recently, Scientists Say

Animals  (tags: animals, AnimalWelfare, polar bears, brown bears, environment, habitat, protection, wildlife, wildanimals )

- 2976 days ago -
When it comes to bears, the polar species seems to be the new kid on the block. A rare fossil jaw found in Norway's Svalbard archipelago is helping researchers confirm that polar bears evolved from brown bears only about 150,000 years ago.

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RosemaryRannes H (650)
Tuesday March 2, 2010, 11:49 am
Fascinating that this rare jaw fossil found in Norway can confirm the evolutionary journey from brown beat to polar bear!
Thanks Cher

Lenee Lirette (30)
Tuesday March 2, 2010, 12:23 pm
very interesting! noted.

Margaret S (53)
Tuesday March 2, 2010, 2:14 pm
I actually heard this on a programme a while ago,years ago polar bears were like brown bears,fascinating stuff.

ilja c (48)
Tuesday March 2, 2010, 2:33 pm

Mark G (36)
Tuesday March 2, 2010, 6:26 pm
Well known that they branched from the brown bear toward the end of the Pleistocene when the earth began to emerge from the most recent glaciation period. Prior to that the arctic was too cold for even "polar" bears. More interesting is they survived the climatic optimum of the Holocene which occurred 5,000 to 9,000 years ago when temperatures were much warmer than today especially in the arctic regions.

Natasha S (3)
Tuesday March 2, 2010, 6:33 pm
Oh, very interesting. Right before we managed to wipe them almost all the way out. ;(

Elaine R (130)
Wednesday March 3, 2010, 3:06 am
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