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They have a layer of long, coarse guard hairs that repel water and a dense undercoat that prevents heat loss. Sea otters also blow air into their fur to create air pockets. This essentially forms a ...

Perhaps most remarkable is the preservation of the animal’s thick, reddish-brown outer hair and dense woolly undercoat, providing tangible evidence of the insulating adaptations that allowed these ...

The preserved fur shows a denser undercoat than modern counterparts, consistent with adaptation to extremely cold conditions. Antler morphology differs subtly, with a more compact spread and thicker ...