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Re: SVP Preview
> << On another note, if Sereno first defined _Torvosauroidea_ using an
> definition to his definition for _Spinosauroidea_, then, under PT,
> _Torvosauroidea_ should have priority. Once again, they aren't superfamilies
> (although superfamilies with the same name might exist under traditional,
> ICZN-based taxonomy) -- they are phylogenetic taxa, clades with no absolute
> rank. As with species, priority should be assigned by date of explicit
> definition, not by date of coinage. >>
> I see nothing to be gained from demolishing well-established taxa in favor of
> those with phylogenetic definitions.
What's your definition of "well-established"? Usage of Megalosauroidea (along
with all taxa with names derived from _Megalosaurus_) has been nothing if nto
> In the long run, phylogenetic taxonomy
> will be viewed as yet another taxonomic fad in an ever lengthening list of
> such fads and methodologies.
Crap ... why doesn't anyone tell me these things!!! :)
> If one must make phylogenetic definitions for
> taxa, then every effort should be made to construct phylogenetic definitions
> that accord with the intents of the originators. For example, defining
> Dinosauria as the common ancestor of some modern bird or other and
> Triceratops, plus all its descendants, is definitely >not< what Owen had in
> mind in 1842 (Triceratops was quite unknown in 1842, for example). Owen
> created Dinosauria for three genera--Megalosaurus, Iguanodon, and
> Hylaeosaurus--and one can define Dinosauria phylogenetically to be the common
> ancestor of Megalosaurus and Iguanodon (while Hylaeosaurus comes along with
> Iguanodon), plus all its descendants. This is exactly the same clade as the
> former, and is as close as possible to the original (non-phylogenetic)
> definition. I'm sure that even Owen, irascible SOB that he was, would be
> happy with it under the circumstances.
I wholeheartedly agree, and so does the draft PhyloCode. (In fact, this is an
example given for the recommendation that taxa be defined in accord with the
=====> T. Michael Keesey <email@example.com>
=====> The Dinosauricon <http://dinosauricon.com>
=====> BloodySteak <http://bloodysteak.com>
=====> Instant Messenger <Ric Blayze>
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