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Re: Dino sex and therm tally rant (and feather origins thrown in)



On Mon, 14 Jul 1997 22:28:55 -0700 Bettyc <Bettyc@flyinggoat.com> writes:
>jamolnar@juno.com wrote:
>> Do you mean have a rubbery egg so that you can release it from a 
>height
>> and it can bounce unharmed?  Remember that sea turtles lay their 
>eggs in
>> sand, and if the eggs drop down, they are hitting something soft 
>anyway.
>> Wouldn't a nesting dinosaur have something soft lining the nest 
>whether
>> the eggs were soft or not?
>
>ok-here's a thought...dinosaurs developed feathers before flight so 
>that
>they could have something to pull off and line nests with.
>what do you think?.........

Maybe the feathers were for the chicks to be able to break their falls
with (mom carries them and then drops them quickly?)

>
>> The fact that all dinosaur eggs found so far are even fossils tends 
>to
>> rule out the rubbery shell idea.  A rubbery egg like that of today's
>> reptiles would fossilize rarely if at all.
>
>not if it had the same conditions burying it.  Should fossilize quite
>nicely.
>
How many rubbery-shelled reptile egg fossils are there?

Judy Molnar
Education Associate, Virginia Living Museum
vlmed@juno.com
jamolnar@juno.com
All questions are valid; all answers are tentative.