Jon
Evolutionary Tree of Life for Mammals Greatly Improved
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would be nice to see their tree… is it online yet?
The link to the study is here, but not sure if you can get the study for free
http://www.sciencemag.org/content/early/2011/09/21/science.1211028
The tree is itself nothing new….going through the phylogeny most of the results are things we have known or suspected for awhile. A quick perusal only picks out a few oddities (camels as the earliest even-toed hoof mammals for instance?).
The divergence dating however…is a bit funky. They have a divergence date for elephants at 7 mya, and 30 mya, which is way way too young. and a divergence date for rodents back into the cretaceous, which is way too old