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metazoan phylogeny question

John Edstrom edstrom at Poopsie.hmsc.orst.edu
Sat Jul 19 14:54:46 EST 1997

I remember that about a year ago there was a paper showing that some
of the main organizing genes in metazoans seem to have originated in
precambrain times.  How has that finding fared, have there been any
subsequent reports that support or challenge it?  Also, according to
current consensus, are the metazoan phyla mono- or polyphyletic?
Is there a recent review for non-specialists?

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