Articles with the keyword: 
Fossilized arachnids made silk but not webs
Darkfrog submitted, created time 2 weeks 1 day (www.nature.com)
Now here's a randomly cool one. Modern spiders use silk for more than just those webs that we love to photograph with dew all over them. They also wrap prey, wrap eggs, line their burrows and cast the strands upward to catch the wind and travel.
Now, it's not clear exactly what these ancient proto-spiders used their silks for, but we can tell that they lack spinnerets, so they would not have had the fine control of today's spiders. Also unlike today's spiders, they had small, one-millimeter tails 
Building the Tree of Life, Genome by Genome
sea-maid submitted, created time 6 months 6 days (www.sciencemag.org)
Phylogenetic studies have gone 'omic. Whereas researchers used to be satisfied comparing one gene, or a few, to sort out the branching of the tree of life, the push now among those building phylogenies is to consider whole genomes--at the very least, dozens of genes and thousands of DNA bases--in establishing kinships among flora and fauna. In this way, evolutionary biology is joining the bandwagon of data-intensive studies pioneered by genomics
Giant frog found in Madagascar
sumsung submitted, created time 10 months 3 weeks (www.nature.com)
A giant frog that hopped around Madagascar 65–70 million years ago has been discovered. Fossil fragments show that the frog, called Beelzebufo ampinga, could have measured 20 centimeters across its squat head, and probably more than 40 centimeters from snout to tail. The researchers nicknamed the monstrous beast "the frog from hell"; the official name comes from one of the many names for the devil (Beelzebub) and the Latin for "toad" (bufo).
"Tree of Life" Has Lost a Branch, According to Largest Genetic Comparison of Higher Life Forms Ever
Eric wu submitted, created time 11 months 2 weeks (www.sciencedaily.com)
Norwegian and Swiss biologists have made a startling discovery about the relationship between organisms that most people have never heard of. The Tree of Life must be re-drawn, textbooks need to be changed, and the discovery may also have significant impact on the development of medicines.
Meet the Beetles--And Their Crazy Family Tree
asuser submitted, created time 1 year 2 weeks (sciencenow.sciencemag.org)
DNA analysis clears up thousands of beetle relationships and reveals some surprises about their evolution.
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