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>1) When a bone fossilizes, is there any organic material left? What minerals
There is some organic material (real bone) left in some cases. This was only
discovered in the last year.
This is out of my field, but I don't think there is a one-to-one correspondance
of element replacement. That is, it depends on the conditions. If I understand
correctly, mineral replacement occurs when groundwater percolates through the
fossil material. Some of the original material is dissolved into the ground-
water, and some minerals in the groundwater precipitate into the spaces created.
Thus, presumably the replacement mineral would be whatever the groundwater is
>2) What is the difference between a velociraptor and a deinonychus (sp?)? It
>has been mentioned on this group that the 'velociraptors' in J.P. were really
>deininychi (-chusses?). Why?
The "velociraptors" in JP were double the real size of fossil velociraptors. The
skulls are quite different. The skull of velociraptor is quite narrow, like a
crocodile's, where the skull of deinonychus is heavier, like a T.rex. If you can
find a good illustration of each, you'll see what I mean.
>I have a question too: I have heard many different things said about what
>Compsognathuses ate. I've read that they ate small animals and not anything
>else, and I've also read that they ate eggs from other dinosaurs' nests. What
Nobody really knows. It's all speculation.