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Latest Ursid hybrid Stories

Polar Bears Older Than Thought, Have Distinct Lineage
2012-04-20 04:57:25

Polar bears have been around much longer than previously believed, and likely interbred with brown bears at one point after the two species separated, according to a Germany study published Friday in the journal Science.


Latest Ursid hybrid Reference Libraries

34_7e0575bf0d746a7a33ee6d7d43ba5207
2005-06-02 10:57:11

The Polar Bear (Ursus maritimus) is a large mammal of the order Carnivora, family Ursidae (bears). It is a circumpolar species found in and around the Arctic Ocean and is the world's largest land carnivore. Adult males weigh from 400 to 600 kg and occasionally exceed 800 kg. Females are about half the size of males and normally weigh 200-300 kg. Adult males measure 2.4 to 2.6 m; females, 1.9 to 2.1 m. At birth, cubs weigh 600 to 700 g. Population estimates range from 16,000 to 35,000, with...

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Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.