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egg meanderings while on cough medicine
ok, I am following the egg postings
I am wondering......(this is logical thought, here. I am also on cold
medicine so forgive me if it sounds too wacky)
Have any bird or bird desendants EVER developed live-bearing? Do we
have any fossil clues from any post K-T period that they may have
developed along those lines in an early non-flight form? I don't
think so, but if the abdomen allowed for more room for a retained egg
or juveniles from a period were examined for wear and tear as much as
Miasaur juveniles have been, what would be the fossil results?
Therapods should probably parallel birds in the egg-laying department,
but the devisions of ceratopians and sauropods and such from therapods
were just how many millions of years before the devision of birds from
therapods (or therapods from birds)? Why would all dinosaurs be
dependant on egg-laying? Why would they develope any other type since
the other relatives that exist today, birds-desendants and
reptiles-early ancestors do not?
Why does size of a saurapod mean live-bearing? What am I mising here?
Betty Cunningham