DNA solves ancient animal riddle that Darwin couldn't

(CNN)After the last of its kind died out about 12,000 years ago, a strange animal that stumped Charles Darwin is finally being added to the tree of life, according to a new study in the journal Nature Communications...
http://www.cnn.com/2017/06/27/world/extinct-animal-ungulate-macrauchenia-darwin-tree-of-life/index.html