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Re: rarity of bird fossils
> I'd make it more like one in 10,000, at least for the Mesozoic. But then, I'm
> a diversity fan.
I can't say that would surprise me, 1 in 100 was my lower limit.
Personally, I believe that by the end of the Cretaceous avian
diversity was approaching modern non-passerine diversity levels.
The problem, of course, is it is hard to argue from lack of data!
That we have but a small portion of avian diversity is clear, but
what the real diversity was is really hard to say with any certainty.
The peace of God be with you.