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Thomas R. Holtz, Jr. wrote:
There is only the most minor "stability of content" issue here (i.e., a
group barely known at the time Tetanurae was coined).
True. _Abelisaurus_ and _Carnotaurus_ were both described in 1985, a year
before Gauthier coined Tetanurae. The other abelisaurids known at the time
were all poorly known and misclassified: _Indosuchus_ & _Indosaurus_
(carnosaurs), _Majungatholus_ (pachycephalosaur!), and so on. Since c.1990,
abelisaurids have almost always been recognized as ceratosaurs (or
ceratosauroids), and never as tetanurans. Ditto for noasaurids. I know
none of this is news to anyone, least of all Tom; but I think the above trip
down memory lane is an argument in favor of "stability of content".
I'm guessing this will all be moot, given that the support for a
_Ceratosaurus_+Abelisauroidea clade is robust.
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