Sloths are no slouches when it comes to evolution
Wednesday, September 10, 2014 - 02:00
in Paleontology & Archaeology
Today's sloths might be known as slow, small animals, but their ancestors developed large body sizes at an amazing rate, according to an evolutionary reconstruction published today in the open access journal BMC Evolutionary Biology. The fast rate of change suggests that factors such as environmental conditions, or competition with other species must have strongly favored the bigger sloths, before they died out.