Tinier Tyrannosaurs.

• Autores: Kate Wong
• Localización: Scientific American, ISSN 0036-8733, Vol. 301, Nº. 6, 2009, págs. 22-25
• Idioma: inglés
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• Resumen

  • The article discusses how small relatives, such as Raptorex kriegsteini, of the dinosaur Tyrannosaurus rex are forcing paleontologists to rethink the evolution of the T. rex. Paleontologists have established a theory about the T. rex's evolution from smaller ancestors which was challenged by findings of smaller specimens with different features. An overview of a report in the October 16, 2009 issue of "Science," by researcher Paul C. Serano and colleagues regarding R. kriegsteini, is presented. INSET: Ardi Unveiled..