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Posted by WW on January 27, 2003 at 04:14:28:
In Reply to: Re: There's also the statement by some... posted by pjay on January 25, 2003 at 10:51:40:
:Seems like it would be much more beneficial to actually start testing inter-continental genera (Elaphe, Coluber, Agkistrodon, Boa, etc.) to see if they really are related enough to be in the same genus (considering how long some continents have been separated, I really doubt it).
In addition to the Elaphe study mentioned by pjay, most of the other intercontinental genera have also been split - the Old World Coluber are now in different genera (Haemorrhois, Hierophis, etc.), and the Old World Agkistrodon are now Gloydius, Deinagkistrodon, Hypnale, and Calloselasma.
Boa has almost always been restricted to Boa constrictor. A study by Kluge (1991) lumped Acrantophis and Sanzinia into Boa, but this has not been followed universally, and Kluge's phylogenetic scenario has since been contradicted by other studies since then, so that there is little case now for adopting Kluge's classification.