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phylogeny of boa's ???
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by lisa_smith on December 23, 2004
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Hi im a college student and we are doing somthing for biology ( anything we want as long as its good) I want to do somthing with snakes, i really wanna try and write somthing about evolution and phylogenic position of boa's compared with other snakes of the past . I know it might be a lot to ask but anything will be great.
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RE: phylogeny of boa's ???
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by Joy on December 23, 2004
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Hey,
Any herpetology text book will cover some of that. But “Snakes: The Evolution of Mystery in Nature” is a fantastic text on that. I got my copy off Amazon.
Keep in mind, there is constant shuffling among snake taxonomy and the experts don’t even agree.
Good luck!!
Joy
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RE: phylogeny of boa's ???
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by martyn on December 24, 2004
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Thats a point, i have not seen that ''paleoherp'' post anything on here in a while , he could answear that. If i remember correctly he or she was interested in that stuff.
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RE: phylogeny of boa's ???
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by ALA_herp31 on December 24, 2004
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Wonder what happen to Paleoherp, he/she always had some good topics on here. Sure miss seeing him/her on here, always had something good to add.....Be safe ya'll, Wally
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RE: phylogeny of boa's ???
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by BGF on December 24, 2004
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Two good papers are:
Higher-level relationships of snakes inferred from
four nuclear and mitochondrial genes
Nicolas Vidal, S. Blair Hedges
C. R. Biologies 325 (2002) 977–985
Molecular Phylogenetics of Squamata: The Position of Snakes, Amphisbaenians, and Dibamids, and the Root of the Squamate Tree
TED M. TOWNSEND, ALLAN LARSON, EDWARD LOUIS, AND J. ROBERT MACEY
Syst. Biol. 53(5):735–757, 2004
Email me if you'd like PDF copies of them bgfATunimelb.edu.au AT=@
Cheers
Bryan
www.venomdoc.com
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RE: phylogeny of boa's ???
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by paleoherp on December 26, 2004
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hi
The phylogeny of the boidae is not easy to unravel and is very hard to explain on here.
its is possible to distinguish different groups which are probably monophyletic: boinae , bolyeriinae ,tropidopheinae calabariinae , erycinae and madtsoiinae. The relations of these sub families remain unknown . The erycinae and calabariinae seem rather closley related to the boinae. the tropidopheinea and the bolyeriinae are probably more distantly related. some experts have suggested that pythons have originated from the xenopeltid line of evolution . The choice between other alternatives remains unbalanced . Some experts considers the relationships between the madtsoiinae and the boini are very close and he includes madstoia and gigantophis in his boini. nevertheless the madstoiinae display both characters in a more primative state than those of the boinae ( complete lack of prezygapophysial process, dentary with three foramina mentalia ) as well as specailazations of thier own . Therefore it seems impossible to regard the madtsoiinae as members of the boinae radiation . madtsoia and giantophis belongs to a phyletic line whose relationships remain unknown among the boidae.
Its a good topic for your biology but a hard one .
i hope this is helpfull
SHAUN
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