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Re: dinosaur copulation?
From: John Erick Schneiderman <email@example.com>
> It is possible that sauropods may have only mated when they were
> sub-adults and stopped mating after they reached a certain size or weight.
This is extremely doubtful.
What would the selective advantage be of growing to such large size
after reproductive age? Remember, natural selection deals in
*reproduction* only. An extreme adaptation can only evolve if it
improves *reproduction*. Thus, a non-reproductive gigantic post-
adult would nt be selected for under most circumstaances.
The *only* possiblity in this regard would be if they had such a
cohesive social structure that the post-adults provided significant
protection and/or feeding advantages to the children of their kin.
The peace of God be with you.