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RE: Tyrannosaurs with leathery skin, etc.
Sinosauropteryx looks to be more primitive than tyrannosaurs or
ornithomimids, maybe even further from birds than Allosaurus (it is one
primitive sucker), this would still be a considerable subset of the
So does this mean that S.s.pteryx is a basal tetanurine? has the
relationship with the European Compsognathus been confirmed? It is
superficial similar but methinks it has several primitive features.
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