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RE: "Dinosaurs: Return To Life? "
evelyn sobielski writes:
> > I was very interested to see the tail vertebrae in
> > the chicken. While, obviously, there is much more to
> > this reverse engineering idea than was revealed, it
> > was good to see that the material is already there,
> > genetically, and anatomically. It just needs to be
> > manipulated to appear once more in a living
> > specimen. Not impossible, but highly in-depth.
> "Not impossible" in a theoretical way maybe. In real
> life, the air-sac system is about as impossible to
> revert as it gets. The entire trunk anatomy would need
> to be rebuilt.
Why would you want to do awat with the air-sac system? It's well
established that both theropods and sauropods had this, so it's most
likely primitive for Saurischia. (And not impossible that
ornithischians also had avian-style flow-through respiration but that,
for some reason, their diverticula never induced skeletal
/o ) \/ Mike Taylor <firstname.lastname@example.org> http://www.miketaylor.org.uk
)_v__/\ "Operas are all the same really. Boy meets girl boy dumps
old girlfriend new girlfriend dumps boy boy goes back to old
girlfriend optional repeat one girl dies. Easy" -- Steve