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On Tue, 21 Mar 2000, Allan Edels wrote:
> the bias towards the survival of smaller animals is very important,
> especially concerning dinosaurs.
I agree. But it suggests more than one hypothesis. Another great unmet
challenge is our inability to explain the "re-evolution" of this
outrageously successful body form. In a word, why no convergence? This
cannot be explained by a single "event"!
> As to the small dinosaurs, it is possible that the only surviving small
> dinosaurs WERE the birds, possibly due to their greater mobility.
But why _only_ neornithines? All birds were mobile, surely.