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Re: Island-dwelling dinosaurs (was Re: Gargantuavis neck vertebra)
On Sun, Jun 17, 2012 at 11:38 PM, David Marjanovic
>> Do we really know this?
> Of course not. :-)
>> Especially for the ratites: how good is our timing of the origin of
>> flightlessness in this bunch?
> The oldest rhea, *Diogenornis*, is Paleocene. Because it's recognizable as a
> rhea, I suppose it's known to be flightless.
Is it a crown rhea? If not, oughtn't the ratite paraphyly idea suggest
we shouldn't assume it flightless just because it's on the rhea
Why can't you be a non-conformist just like everybody else?