18 agosto 2014
One of the most bizarre-looking fossils ever found — a worm-like creature with legs, spikes and a head difficult to distinguish from its tail — has found its place in the evolutionary tree of life, definitively linking it with a group of modern animals for the first time.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/xWssJqMxPa0/140817220058.htm
