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Re: Tinamous: living dinosaurs
On 6/27/2011 12:40 PM, Jason Brougham wrote:
In other words, isn't it most parsimonious to assume that the brooding strategy
held in common by Troodon, oviraptorids, (possibly Gobipteryx), tinamous and
ratites is a synapomorphy, rather than a strategy that was independently
converged upon four times?
Maybe. Do the tinamous and ratites have compelling reasons to behave in
the specified way?
If a paternal-only model conveys obvious advantage over other models
within the context of the common aspects of ratite/tinamou lifestyle,
and those common aspects are time-transcendent and applicable to
'Troodon, et al', then I would suggest that that makes convergence more
likely. If, OTOH, everyone is scratching their heads wondering "Why the
heck are these birds are doing this?", then that makes convergence less