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RE: Rugops: some questions
Quoting "Thomas R. Holtz, Jr." <email@example.com>:
> That might well be, but they evidence they use to support this is the lack
> of a hierarchical structure within Abelisauroidea that matches any
> particular break up pattern.
Actually, the phylogeny presented in the _Rugops_/_Spinostropheus_ paper is
consistent with the Africa-first hypothesis:
+--CARNOTAURINAE (Rajasaurus + (Majungatholus + Carnotaurus))
Note that ABELISAURIDAE are Pan-Gondwanan, but the interior node (Abelisaurus +
CARNOTAURINAE) is restricted to S.Am. and Indo-Madagascar. But as Dr. Tom
noted, we're still a long way from finding everything there is to be found.
Department of Linguistics
University of Michigan