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EARLY EVOLUTION OF 'BIRDS'
>>After I have read some papers. I see that many fossils have feather
>>and may be origin of bird.
>This is what many people say. But many people are often wrong!
I agree to an extent with this if I understand your standing correctly.
>Yes - they come after the first bird. Not just some of them but all of
>them. This means probably the origin is the other way round - these
>feathered dinos are *descendants* of birds.
This could just be an example of a preservation bias. Anyway, you
cannot use the fact that the birdlike dinosaurs came after
_Archaeopteryx_ as proof that they are descendents of _A._. More
evidence should be gathered. Thus far, I think that the evidence shows
that these creatures are long-surviving relicts that were close to the
ancestry of birds. You cannot look at _Archaeopteryx_ and get a perfect
dromaeosaur, _A._ is too birdlike and derived.
>This is not what I think because there were two very big explosions,
>both just after the first bird known: other birds, and bird-like
>dinosaurs. I would expect this - feathers give an animal great
>advantages no other animal has, and drives evolution in new
Of course, you have to show that the birdlike dinosaurs evolved from the
>All birds are descended from a very close relative to >_Archaeopteryx_.
Many so-called "dinosaurs" are also. The fact >that cladistics doesn't
agree with this will be evidence that cladistics >is bad (when proof
Where is your proof other than the temporal 'problem' (?) and the
existence of feathers? Here's what I see;
_Archaeopteryx_ is extremely birdlike with the hooked ectopterygoid, no
serrations on teeth, etc, birdlike braincase, single sternum, etc.
Advanced birdlike dinosaurs show few of these features.
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