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going offlist on Protista, bacteria
Probably best to go offlist to continue these somewhat offtopic
discussions. I'm probably already skating on thin ice, and don't want to
get thrown off the list. We often discuss such things at
sci.bio.paleontology (on usenet) and occasionally on Taxacom.
However, I think it is grossly unfair (and inaccurate) to characterize
dinosaurs (and all the rest of the metazoans) as occupying a tiny twig on
the tree of life. Such exaggeration will only confuse and intimidate
students and everyone else. Even "Korarchaeotes" (with very distinctive
rRNA) are just an aberrant group within Class Crenarchaea.
The number of Metazoan phyla has also gotten out of hand (I recognized
24, and even that is too many). Order Tullimonstrida (Tully monsters) is
probably just an aberrant group of sipunculans or molluscs.
And finally, ether-linked lipids are not restricted to the so-called
"Archaea" (also called Metabacteria, which is an older and more appropriate
name). You can read about the ether-linked lipid "myth" in my 1998 paper
(available online) at http://www.geocities.com/kinman/april.html
-----Going offlist with this now, Ken
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