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Re: (was marine reptile McMenu)
1988 is old... could be difficult to get, though this journal ought to be
Patterns of Vascular Plant Diversification in the Fossil
Record: Proof and Conjecture.
Proof? I thought of all scientists only historical linguists still talked of
There is a lot of potential bias due to increasing morphological
complexity (allowing separation into more morphospecies), founder
morphologies (leading to diversity among earlier forms being described in
higher ranks) and novel adaptations (angiosperms sometimes speciate soley
in order to better adapt to a new pollinator). Of course, these changes
themselves might also restructure global ecosystems and background
evolution, extinction and radiation patterns.
I don't see how that would be connected to "genus lifespans".
I personally suspect that increasing invasibility of ecosystems (globally)
due to the Angiosperm radiation, may have been a major driving
factor in faunal turnover (but I have yet to think of a good way to test
What do you mean by increasing invasability?