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Re: Mesozoic - the heyday of life?
> In a message dated 97-06-11 04:51:43 EDT, firstname.lastname@example.org (Jonathon Woolf)
> << I might also add that as far as I can tell, the mammals have produced
> more variety in sixty million years than the dinosaurs did in a hundred
> and fifty million. I don't think our furry cousins have anything to
> feel inferior about at all. >>
> Don't be so sure about this. There is considerable bias in the fossil record
> toward more recent forms (e.g., Cenozoic). As more dinosaur horizons open up,
> more new dinosaur genera are described. And don't forget that modern birds,
> which are dinosaurs as well, are the most diverse tetrapod subgroup, beating
> mammals by more than two to one.
Welllll . . . . I think this kinda depends on how you define
"diversity." How do you define it? Is it the same thing as "variety"
(which is the word I used)?