53 million-year-old high Arctic mammals wintered in darkness
Monday, June 1, 2009 - 12:42
in Paleontology & Archaeology
(PhysOrg.com) -- Ancestors of tapirs and ancient cousins of rhinos living above the Arctic Circle 53 million years ago endured six months of darkness each year in a far milder climate than today that featured lush, swampy forests, according to a new study led by the University of Colorado at Boulder.