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Re: Carniadactylus paper and pterosaur ontogeny
This is just nonsense. Isometric growth has been demonstrated for
the forelimb-hindlimb ratio -- and that's it. Skulls most obviously
didn't grow isometrically in pterosaurs; neither do they anywhere
You're standing by an unproven paradigm. Show me one juvenile and
one associated adult to prove your statement.
None of the embryos discovered are geometrically similar to the
adults. Furthermore, none of the animals you are suggesting as
juveniles are geometrically similar to the adults, either, and if
those animals are, in fact, some kind of tiny adult, then you don't
have a sample to demonstrate isometry in the first place.
It's also worth noting that for pterosaurs to be flighted at small
size and retain flight ability through growth, they cannot grow
Michael Habib, M.S.
Center for Functional Anatomy and Evolution
Johns Hopkins School of Medicine
1830 E. Monument Street
Baltimore, MD 21205