Latest Ursid hybrid Stories
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. The researchers examined mitochondrial DNA, a special "additional genome" that lives in the cell's energy factories and is passed on only from the mother, from polar bears, brown bears and black bears. They found that the brown bear and polar bear ancestral lines...
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...
- Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
- Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
- Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
- A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.