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Re: cause of Gigantism in sauropods
Some (Loggerheads) in the Sargasso sea. Terrestrial analogue?
Any thick vegetation? I don't know...
2. Because of water access, they can _and do_ lay in places with
reduced predation pressure. Can't think of a place Titanosaurs could
get to that their predators could not.
The predators of adult titanosaurs are rather irrelevant to their eggs,
3. Not sure of specifics here but would bet that sauropod eggs'
optima were more stringent than those of turtles.