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Re: Carcharodontosaurus and pterosaurs question..

DinosØMP wrote:
> I have two questions.
> 1.
> How can you dino professors say that Giganotosaurus, Spinosaurus and
> Carcharodontosaurus was exactly 12, 12 and 14m. long? They arent known
> from anything more than _fragments_!!! They could be everything from
> 10-20m.!

        Gigantosaurus is around %80 complete, but as far as the
other two go any length / weight estimates will be aproximations based
on closest relatives that are more complete. Carcharodontosaurus
is assumed to have had a long-and-low allosaur body plan. I can't
say for sure how the spinosaurus estimates were reached.

> 2.
> I need an brain-update in pterosaurs, can some of you guys help me?
>         a. Is Pterodactylus a pack-bag for pterosaurs? Why does it have
>            so many species? What about Ornithocheirus?

        As far as I know pterodactylus is a fairly well known genus.
It is the Ornithocheiridae that seems to be the "waste bin" family.

        Dann Pigdon
        Melbourne, Australia

        Dinosaur Reconstructions:
        Australian Dinosaurs: