sábado, 29 de marzo de 2014

Presentación del libro ‘Luz, la Niña Chamán’

Luz, La Niña Chamán’ es una trepidante historia de aventuras que se desarrolla hace 500.000 años y es un libro especialmente pensado para niños y niñas de todas las edades. Escrito por la escritora y periodista Elena García Quevedo e ilustrado por la diseñadora italiana Valentina Netri, se basa en la información dada por los fósiles encontrados en la Sima de los Huesos de la Sierra de Atapuerca. Así, de una manera clara y didáctica descubre a niños y niñas por qué Atapuerca es clave para explicar la evolución humana. [...] museoevolucionhumana.com/

Un nuevo método permite identificar a los dibujantes paleolíticos

La Universidad ha publicado el trabajo "La atribución de la autoría de las figuraciones paleolíticas. Avances metodológicos desde de la Prehistoria y la Psicología Cognitiva". Juan María Apellániz e Imanol Amayra son los autores de esta obra que estudia la conducta artística paleolítica mediante dos metodologías: la atribución macroscópica y el análisis geométrico/microscópico de la forma, trazo y trazado. Los resultados llevan a concluir que la inspección visual está más sujeta a errores perceptivos de atribución que el análisis geométrico/microscópico. 

En el libro se identifican 10 autores que dibujaron figuras, otros 10 que las grabaron y 4 que realizaron dibujos y grabados. Se demuestra que existe una fórmula particular e irrepetible, que se expresa de forma consciente o inconsciente, en donde predomina una visión analítica, analógica y preocupada por la consistencia gráfica de las proporciones de las partes de la figura.

Juan María Apellániz es profesor emérito de Prehistoria y Arqueología en la Universidad de Deusto y ha trabajado en dos aspectos del arte paleolítico: el de la forma y el de la atribución de autoría y sus metodologías correspondientes. Por su parte, Imanol Amayra es profesor titular de Psicología de la Memoria de la Facultad de Psicología y Educación de la Universidad de Deusto. Ver libro

Ver libro en Google Books

Bradgate Park 'was used as Ice Age hunting ground'

Flint tools found at a public park in Leicestershire indicate it was used as an Ice Age hunting ground, say archaeologists.

1/3. The scraper and piercer were manufactured on longer blades but these have broken through use
The flint artefacts were revealed by the gradual erosion of a footpath at the eastern end of Bradgate Park.
They have now been evaluated to determine who may have been active in the area.

Experts believe the site was used by "hunter-gatherers of a culture termed Creswellian".
The culture is named after Creswell Crags, a limestone gorge with caves once used by ancient ancestors, located on the border of Derbyshire and Nottinghamshire.

The remains were investigated by University of Leicester Archaeological Services (ULAS).
Lynden Cooper, project officer at ULAS, said: "Rapid climate change c15,000 years ago led to large tracts of new grassland territory becoming accessible to animals such as horse, deer and reindeer.

"A small band of humans, late Magdalenian hunters, also entered this new land of plenty, and within a short period of time had evolved into the Creswellian people.
"Innovative stone tool technology can be seen to reflect new hunting strategies required to cope with ecological changes resulting from the warming climate."

The tools include blades known as Cheddar and Creswell points, and scrapers used to process animal hides.

The university said that while there are about 20 Creswellian cave sites around the UK, Bradgate Park was a "very rare" discovery of an open air site.
ULAS was assisted by Rob Clough, a ranger at Bradgate Park, as well as Graham and Christine Coombes, who found the first flint pieces in 2001.

The site is thought to have been a hunting stand, where hunters intercepted animals such as horse and deer that were passing through the gorge. bbc.com/

Earliest Evidence of Gigantism-Like Disease Found in 3,800-Year-Old California Skeleton

The skull of the man found in the site known as Burial 37... (Photo by Eric Bartelink/Phoebe Hearst Museum)
The remains of a man buried 3,800 years ago in a richly decorated California grave bear some unusual but unmistakable features — a protruding brow, a lantern jaw, thick leg and arm bones, and teeth so crowded together that at one point they erupt in rows three deep.

According to a new study of the ancient skeleton, they are signs of acromegaly, a rare disorder of the endocrine system that’s similar to gigantism.

The California man is among the very few examples of acromegaly ever found in the archaeological record, and it’s the oldest ever identified, according to Dr. Eric Bartelink, a physical anthropologist at California State University, Chico.

“It is the earliest evidence of this condition in humans, the only documented case from prehistoric California, [and] one of the more complete skeletons documented with this condition,” he said in an interview.

Acromegaly has only been identified definitively at two other archaeological sites in North America, Bartelink said: in the remains of a male buried in New Mexico about 600 years ago, and an unsexed 1,100-year-old skull found in Illinois.

The newly found case in California adds to the scant literature of the disorder, he said, potentially improving how acromegaly may be diagnosed in other remains, and also shedding light on the history of the disease, perhaps even how it was interpreted in the ancient past. [...] westerndigs.org/

Discoveries Challenge Beliefs on Humans’ Arrival in the Americas

SERRA DA CAPIVARA NATIONAL PARK, Brazil — Niede Guidon still remembers her astonishment when she glimpsed the paintings.

Preserved amid the bromeliad-encrusted plateaus that tower over the thorn forests of northeast Brazil, the ancient rock art depicts fierce battles among tribesmen, orgiastic scenes of prehistoric revelry and hunters pursuing their game, spears in hand.

“These were stunning compositions, people and animals together, not just figures alone,” said Dr. Guidon, 81, remembering what first lured her and other archaeologists in the 1970s to this remote site where jaguars still prowl.

Hidden in the rock shelters where prehistoric humans once lived, the paintings number in the thousands. Some are thought to be more than 9,000 years old and perhaps even far more ancient. Painted in red ocher, they rank among the most revealing testaments anywhere in the Americas to what life was like millenniums before the European conquest began a mere five centuries ago.

But it is what excavators found when they started digging in the shadows of the rock art that is contributing to a pivotal re-evaluation of human history in the hemisphere. [...] nytimes.com/

Actualización 01-04-14Descubrimientos que desafían las creencias sobre la llegada de humanos a América
Nuevas fechas para la presencia humana en Brasil
El hallazgo de herramientas líticas de 22.000 años de antigüedad al noreste de Brasil trastoca las creencias establecidas acerca del poblamiento del continente americano. A lo largo de los últimos años, diferentes hallazgos diseminados por toda América ponen en entredicho las cronologías manejadas hasta ahora...