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RE: Extinction

I believe there is paleontological evidence which indicates
that crocodylids are more closely related to birds than to
other reptiles. Bakker and other have gone so far as to label
them birds or pre-birds(?). It may well have been TSD that 
saved the crocodylids from extinction and gave rise to the
birds thereafter. If TSD did not occur there may have been
no birds and no ?????