The largest-ever phylogenetic study of spiders shows that, contrary to long-held popular opinion, the two groups of spiders that weave orb-shaped webs do not share a single origin.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...