3 agosto 2015
As grasses grew more common in Africa, most major mammal groups tried grazing on them at times during the past 4 million years, but some of the animals went extinct or switched back to browsing on trees and shrubs, according to a new study.img src=»http://feeds.feedburner.com/~r/sciencedaily/~4/SKS1K9_f4ow» height=»1″ width=»1″ alt=»»/
http://feeds.sciencedaily.com/~r/sciencedaily/~3/SKS1K9_f4ow/150803154848.htm
