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RE: Redwoods and baby sauropods
>You're talking about redwoods right? Isn't your point invalidated a
>bit by choosing the very biggest of trees and not the very biggest
Do you mean tallest or biggest around? One kinda redwood is the biggest
around, and one kind is the tallest, but they aren't both at the same
time. I chose redwoods because I know they tip over easy because of the
shallow root system, and because I knew they were co-patriots of
dinosaurs. I don't know about the root systems of other conifers well
enough to include them.
>First of all, I suspect an average size conifer is in the Western
>Hemlock-Douglass Fir-Western Redcedar range, not the redwood range.
OK, what kind of rootball does it have?
Can it be easily knocked over by a creature with the weight and leverage
to knock it over?
Does it have an extensive taproot?
If difficult to push over, then the dinosaurs that were of a type that
knocked over trees would have tried with probably be narrower ones that
they might be able to push over or snap. I know that petrified forests
have evidence of beaver-gnawing preserved, but are any fossil trees
fossilized from a dinosaur era that had been snapped or chewed? (I think
it's Petrified Forest National Monument in ?Utah? with the beaver-chewed
>Another thing is that knocking a tree over wouldn't be too quick.
>I'd think that a diplodocoid would do something like rear up and
>rock the tree back and forth loosening the roots until it was no
>longer stable and able to fall over.
Sounds plausible. Makes me happy.
>Lastly, I doubt that sauropods would have done this much unless they
>were feeding babies and young animals that were not large enough to
>reach leafy branches,
That's what I was saying in the first place!!
Sauropods that can knock over trees place browse into the level not
normally reached by juveniles. An advantage over non-rearing sauropods.
I aslo stated that adults can reach the browse that juveniles can reach,
and so compete with their own kind. This would counter that
>I also doubt that babies would be smushed by said tree either: trees
>are noisy when they fall down and would probably be rocked down
>slowly, so the babies would have been able to notice and get out of
>the way with plenty of time.
Also the adults yelling 'timber!' probably didn't hurt, either ;]
For more information on the history of the Coastal redwood forests-go
Man and the Redwoods by Dr. James P. Gilligan, 1965