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Morfología del mosaico en el tórax del Australopithecus sedibaba
Peter Schmid1, Steven E Churchill, Shahed Nalla
1Anthropological Institute and Museum, University of Zurich, Zurich, Switzerland. smidi@aim.uzh.ch
Science (New York, N.Y.)
|April 13, 2013
Resumen
La forma del tórax de Australopithecus sediba es simiesca en su sección superior pero más humana en su sección inferior. Este hallazgo proporciona nuevos conocimientos sobre la evolución y la locomoción torácica de los primeros homínidos.
Área de la Ciencia:
- La paleoantropología es la paleoantropología.
- Evolución del ser humano Evolución del ser humano
- Biología esquelética Biología esquelética.
Sus antecedentes:
- La forma torácica de los primeros homínidos es objeto de debate, con pruebas fósiles limitadas.
- Comprender la morfología torácica de los homínidos es crucial para reconstruir la locomoción ancestral.
Objetivo del estudio:
- Para investigar la forma torácica del Australopithecus sediba. para investigar la forma torácica del Australopithecus sediba. para investigar la forma torácica del Australopithecus sediba. para investigar la forma torácica del Australopithecus sediba. para investigar la forma torácica del Australopithecus sediba. para investigar la forma torácica del Australopithecus sediba.
- Para comparar el tórax del Australopithecus sediba con los simios existentes y el Homo.
Principales métodos:
- Análisis de restos fósiles de costillas de homínidos.
- Reensamblaje de la forma torácica a partir de especímenes fragmentados.
Principales resultados:
- El Australopithecus sediba exhibe un tórax superior mediolateralmente estrecho, parecido a un mono.
- El tórax inferior del Australopithecus sediba está menos ensanchado que el de los simios y se asemeja a la morfología humana.
Conclusiones:
- La forma torácica del Australopithecus sediba sugiere un mosaico de rasgos ancestrales y derivados.
- Esta morfología puede indicar adaptaciones locomotoras únicas distintas de la carrera de resistencia observada en Homo.
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