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Re: transitions abound

  Boas and pythons have vestigial hind legs.  Are they
> lizards?

Agree with you, there are many examples of transitions - but
as a pedantic cladist, ALL snakes are lizards (as birds are
dinosaurs, humans are apes etc).  The femurs of pythons are
functional (in males, during courtship) which is probably
why they haven't disappeared.