http://www.sciencemag.org/cgi/content/abstract/284/5421/1816?ijkey=ae5e228a882495f5bc344f9ed7439c817a13dfe2&keytype2=tf_ipsecsha
Reconstructing Phylogeny with and without Temporal Data
This site presents the idea that birds developed from flying pterosaurs. This is a credible alternative to the current, mainstream idea that birds developed from land-based dinosaurs.
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