(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.
- CU-Boulder study shows 53 million-year-old high Arctic mammals wintered in darknessMon, 1 Jun 2009, 13:44:50 EDT
- New study shows how giant tortoises, alligators thrived in High Arctic 50 million years agoTue, 24 Aug 2010, 13:15:52 EDT
- Duck-billed dinosaurs endured long, dark polar wintersWed, 11 Apr 2012, 14:35:37 EDT
- Ancient forest emerges mummified from the ArcticWed, 15 Dec 2010, 11:52:02 EST
- Ancient human ancestors had unique diet, according to study involving CU BoulderWed, 27 Jun 2012, 15:08:14 EDT