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re:FAQ on dino definition
From: "Paleontology Columbus College, Georgia"
> To Thomas Holtz et al:
> Your diagnostic definition of Dinosauria is fine except that it
> excludes Segnosaurs and a few other oddballs, since these are not
> clearly derivatives or near relatives of Iguanodon or Megalosaurus
> or any sauropodomorph. I find it rather difficult to list valid
> autapomorphies uniquely discriminating Dinosauria from Archosauria
A recent issue of Canadian Journal of Earth Sciences provided some
very good evidence that the Segnosaurs are derived from Theropod
ancestry, probably from a Maniraptoran ancestor. [The evidence
consists of the discovery and description of an intermediate genus].
I think the synapomorphies that Dr. Holtz lists are adequate
for the FAQ, at least once they are annotated into a form that
beginners are likely to be able to understand.
The peace of God be with you.