The case for birds evolving from a dinosaur lineage of velociraptor sort
appears very strong, as I understand it, but opponents (such as Feduccia)
point out that birds like Archaeopteryx are known from the mid Jurassic, and
their supposed dinosaurs ancestor don't appear until the Cretaceous. In
other words fossil evidence for birds can be found for periods 150 million
years before their supposed ancestors are found in the fossil record!
John Leonard
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John Leonard (Dr)
PO Box 243, Woden, ACT 2606, Australia
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