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Re: Recoded Aves introduces a lot of fog?
David Marjanovic wrote-
> > It's less derived than Sapeornis based on- cervical centra
> > not heterocoelous; absence of pygostyle?.
> _Long tail_. And I'd need good evidence to accept a reversal of that,
> the fact that all other known cursorial birds have never reevolved a
> tail, even though they could use it.
We don't know how long Sapeornis' tail was. We have a couple caudals and a
tiny pygostyle. It could very well have been like Nomingia and had over
twenty caudal vertebrae.