Tales of a Feathered Tail: Soon after birds branched off from dinosaurs and gained the power of flight, some may have branched off again as land-bound runners. Why do some people a problem with that?.

• Autores: Stephen Jay Gould
• Localización: Natural history, ISSN 0028-0712, Vol. 109, Nº. 9 (NOV), 2000, págs. 32-42
• Idioma: inglés
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