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Mosasaur eggs (slightly OT)

In a message dated 5/24/2000 7:03:41 AM Pacific Daylight Time, 
majestic_cheese@yahoo.com writes:

> My understanding was that the anatomy of several other
>  types of marine reptiles more or less ruled out their
>  crawling up onto beaches to lay eggs.  IIRC, mosasaurs
>  are an example.

I've been wondering whether the high incidence of ovoviviparity in snakes 
might be a holdover from an aquatic (mosasaurian?) origin.

Nick P.