Scientists have unearthed fossils in a coastal desert of southern Peru of a four...
WASHINGTON - Scientists have unearthed fossils in a coastal desert of southern Peru of a four-legged whale that thrived both in the sea and on land about 43 million years ago in a discovery that illuminates a pivotal stage in early cetacean evolution.
Its four limbs were capable of bearing its weight on land, meaning Peregocetus could return to the rocky coast to rest and perhaps give birth while spending much of its time at sea. Its feet and hands had small hooves and probably were webbed to aid in swimming. With long fingers and toes, and relatively slender limbs, moving around on land may not have been easy.
“Some vertebrae of the tail region share strong similarities with semi-aquatic mammals like otters, indicating the tail was predominantly used for underwater locomotion,” Lambert added.
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