Evidence for Evolutio4

Evidence for Evolutio4 - The second paper appeared in...

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Evidence for Evolution Some data from the rockhunters Hey everyone! Here's post number nine in my series. In this one (which should be short) I summarize a couple of paleontological papers. Since I'm not a rockhunter myself, I won't give too much detail. The first paper is a report from Science by Jeram, et. al. In it they describe fossils of land animals from the Silurian. They found an arachnid (spider) and two centipedes. The kicker of the paper was that land was not supposed to be colonized by animals by the Silurian. But, finding predatory arthropods indicates a stable ecosystem containing animals much sooner than expected. [Aside to the good guys; isn't it nice to have a theory that is enriched, rather than embarrassed, by new data] This finding even made it's way to the popular press, my mom sent me a newspaper clipping (probably KC Star - I can't remember) about it.
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Unformatted text preview: The second paper appeared in Nature and was authored by Pilbeam et. al. In this paper they describe two recently found Sivapithecus humeri and they discuss the hypothesis that it was closely related to the genus Pongo . The upshot of the paper is, previous skull specimens of Sivapithecus indicated that it was probably closely related to Pongo , however, the newly found humeri are not at all similar to Pongo The authors conclude that the data is not sufficient to make a decision at this time. If you want the full, gory, jargon-laden description, plus the photos of these fossils check out the refs. There is also an article about evolution of arthropods in that same issue of Science, but it's not really that interesting (to me at least)....
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This note was uploaded on 11/14/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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