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Re: mosasaur babies/no marine dinos



David Marjanovic wrote:
> Maybe it's impossible to evolve viviparity when a calcified egg shell has
> evolved. Don't know why, but it hasn't happened so far... unless the
> suggestion that hesperornithiforms were viviparous is correct :-)
> Is there a viviparous gecko?

Yes, in New Zealand, eg Hoplodactylus

See

Rock, J., Andrews, R.M. & Cree, A. (2000) Effects of reproductive
condition, 
season and site on selected temperatures of a viviparous gecko. Physiol.
Biochem.
Zool. 73:344-355

Tony Canning