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Re: "The X Digit"...a Pteroid bone??
In a message dated 1/25/99 3:01:32 AM EST, tkeese1@gl.umbc.edu writes:
<< Man, this would wreak havoc with the content of some clades -- Ornithodira
{Pterosauria + Dinosauria} would include pseudosuchians, _Euparkeria_,
etc. (not to mention prolacertiforms). Dinosauromorpha
{Dinosauria > Pterosauria} would be come virtually identical to
Archosauriformes.
If this were the case, abandonment of Ornithodira and refinement of the
definition of Dinosauromorpha {Dinosauria > Pterosauria,
Pseudosuchia} might be a good idea. >>
One of the reasons I'm not a terribly enthusiastic advocate of strictly
cladistic taxonomy.