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Re: Declining pterosaur diversity

John Bois wrote:

> On Sat, 27 Nov 2004, David Marjanovic wrote:
> The authors propose inverting the traditional
> question of "When did the last pterosaurs and dinosaurs become extinct?",
> to "When did mammals and birds start replacing small dinosaurs and
> pterosaurs?" (This is a question I have often asked on this list.)

I've got a similar question, "When did birds start replacing large