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Thursday, September 21, 2006

¡Hello baby.!.



Photo, Left. Taken from NYTimes online.Photo Right. Reconstruction. Der Spiegel Online.
What type of reflections deserves the fossils remainders find, almost complete of a probable 3-year-old girl (3, 3 million years b. C.), in the desert of Dikiti, Ethiopia?. Various: 1) The upper part of the body of the child (head, shoulders and upper members), exhibits simian functional morphology, adapted to climb trees. Her face resembles in a lot to characteristics of the species Pan (chin and front backwards). The lower corporal part (marked decrease of ileon and isquion, centralized foramen magnum), indicates nevertheless that she walked straightened up, to human style. A species of body mosaicism -link lost- evidence of a gradual transition of monkeys toward humans. Really the child was a hominid = primate that walks straightened up -with hardly determinism to evolve toward the Homo genus- in this case). 2) fascinating questions for the researchers are: to what age was produced the wean? to what age remained established the secondary sexual characters? to wahat age became they independent?. The present monkeys become independent of their parents on the average at the age of 4 years. A current of opinion suggests that the elongation of this period (of great learning), to 16 years in the humans conditioned enormous cultural advantages and the acquisition of abilities, to confront with success and coherence the enviromment.

3) The finding of a hioides bone, well preserved suggests that she communicated gutturally with others. 4) The find of the girl, carried out by the ethiope paleoantropologist : Zerenay Alemseged, was carried out the year 2000, in a desert area of Ethiopia, embedded in a block of rock and sand. 5 years of meticulous patience was necessary for Zerenay to have the ancient body at his service to carry out pertinent studies. It belongs to the species Australopitecus afarensis a hominid that inhabited Africa among the 3, 9-3 million years b.C. The importance of the finds obliged me to carry out a virtual visit to Max Planck Institute of Evolutive Anthropology (MPI-EVA), in Leipzig/Germany, that sponsored the findings. The works that there are carried out in dental microestructure, body morphometry in 3 dimensions and virtual paleoanthropology virtual, etc., are impressive. In the Max Planck, they have the clear things and well definite goals. Really, Germany has taken up again the front in science. They are innovators. It endorses the importance of the find, that the scientific magazine Nature, dedicate since yesterday, an extensive report to the findings.

¡Hola, bebé!.

Que reflexiones amerita el hallazgo de restos fósiles, casi completos de una probable niña de 3 años (3, 3 millones de años de antigüedad), en el desierto de Dikiti, Etiopia?. Varios : 1) La parte superior del cuerpo de la niña (cara, hombros y miembros superiores), exhibe morfología funcional simiesca, adaptada a trepar árboles. Su cara semeja en mucho a rasgos de la especie Pan (mentón y frente hacia atrás). La parte corporal inferior (disminución marcada del ileon e isquion, foramen mágnum centralizado), indica sin embargo que caminaba erguida, al estilo humano. Una especie de mosaicismo corporal - eslabón perdido -evidencia de una gradual transición de monos hacia humanos (hominidos = primate que camina erguido -con fuerte determinismo para evolucionar hacia el genero Homo- en este caso). 2) Preguntas fascinantes para los cientificos son : a que edad se producia el destete? a que edad quedaban establecidos los caracteres sexuales secundarios? a que edad se independizaban?. Los monos actuales se independizan de sus padres en promedio a los 4 años. Una corriente de opinión sugiere que el alargamiento de este periodo (de gran aprendizaje), hasta los 16 años en los humanos condicionó enormes diferencias culturales y la adquisición de habilidades, para enfrentarse con éxito y coherencia al medio que lo rodeaba.

3) El hallazgo de un hueso hioides bien preservado sugiere que se comunicaba guturalmente. 4) El hallazgo de la niña, realizado por el paleoantropologo etiope: Zerenay Alemseged, fué realizado el año 2000, en un area desértica de Etiopia, incrustada en un bloque de roca y arena. 5 años de meticulosa paciencia le han costado a Zerenay tenerla a su disposición para realizar los estudios pertinentes. Pertenece a la especie Australopitecus afarensis un homínido que habitó Africa entre los 3, 9-3 millones de años a.C. La importancia de los hallazgos me obligó a realizar una visita virtual al Max Planck Institute Institute of Evolutive Anthropology (MPI-EVA), sito en Leipzig/Alemania, que patrocinó el hallazgo. Los trabajos que alli se realizan en microestructura dental, morfometria corporal en 3 dimensiones y paleoantropologia virtual, etc., son impresionantes. En el Max Planck, tienen las cosas claras y las metas bien definidas. Realmente, Alemania ha retomado la delantera en ciencia. Son innovadores y autoexigentes. Refrenda la importancia del hallazgo, el que la revista cientifica Nature, dedique desde ayer, un amplio reportaje al tema.

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