From: David Osumi-S. <dj...@ge...> - 2010-07-19 16:04:41
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On 19 Jul 2010, at 16:55, David Osumi-Sutherland wrote: > > On 19 Jul 2010, at 16:45, Ravensara Travillian wrote: > >> >> David wrote: >> >> Is this a tetrapod hindlimb: >> >> >> http://en.wikipedia.org/wiki/Pelvic_spur >> >> >> ?? >> >> >> Yes, it is a vestigial pelvis and femur, and snakes are tetrapods. >> Whales (also tetrapods) have vestigial femurs as well. > > My point exactly. I'm suggesting that, as an evolutionary > biologist, you are classifying this structure as a tetrapod hindlimb > based on evolutionary history, not based on structural > characteristics it shares with /all/ other tetrapod hindlimbs. And certainly the statement that a snake is a tetrapod /must/ be asserting a classification based in evolutionary history rather than based in structural properties. > >> >> --Raven >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Sprint >> What will you do first with EVO, the first 4G phone? >> Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first_______________________________________________ >> Obo-discuss mailing list >> Obo...@li... >> https://lists.sourceforge.net/lists/listinfo/obo-discuss > > David Osumi-Sutherland, PhD > Ontologist / Curator > Virtual Fly Brain / FlyBase > Department of Genetics > University of Cambridge > Downing Street > Cambridge, CB2 3EH > UK > +44 (0)1223 333 963 > > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Sprint > What will you do first with EVO, the first 4G phone? > Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first_______________________________________________ > Obo-discuss mailing list > Obo...@li... > https://lists.sourceforge.net/lists/listinfo/obo-discuss David Osumi-Sutherland, PhD Ontologist / Curator Virtual Fly Brain / FlyBase Department of Genetics University of Cambridge Downing Street Cambridge, CB2 3EH UK +44 (0)1223 333 963 |