Pterosaurs to Birds: Some birds, some pterosaurs (which is which?)

Wednesday, April 28, 2010

Some birds, some pterosaurs (which is which?)

3 comments:

DjangoFebruary 19, 2011 at 10:53 AM
What ?!?!?! You're actually trying to use artists' reconstructions as hard scientific evidence?!?! Yes, pterosaurs look superficially like birds, but that's just convergent evolution. Champsosaurus looks a lot like a crocodile, but does that make it the ancestor of crocodiles? Definitely not.
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Dr. PterosaurFebruary 19, 2011 at 3:11 PM
You are becoming tiresome.
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Dr. PterosaurSeptember 10, 2011 at 9:50 AM
Rather than convergent evolution I am suggesting homology.
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Here is a summary of the basic ideas of this site:

Birds developed in a lineage from short bony tailed pterosaurs to short bony tailed scansoriopterygids that developed into basal pygostylia that developed into modern birds. A side lineage earlier developed from the long tailed pterosaurs to long bony tailed scansoriopterygids. That lineage went extinct. The category called coelurosaur dinosaurs includes only actual dinosaurs (eg. tyrannosaurs). It does not include birds. The fossil record supports the pterosaur-to-bird theory. The fossil record does not support the dinosaur-to-bird theory.

Pterosaurs to Birds

Wednesday, April 28, 2010

Some birds, some pterosaurs (which is which?)

3 comments:

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