Wednesday, June 17, 2009

Right handedness of Homo heidelbergensis from Sima de los Huesos (Atapuerca, Spain) 500.000 years ago

Handedness is a product of brain specialization, and so it has been subject of evolution. Handedness in living humans is well known and shows the highest degree of manual specialization. Studies on hand laterality in non human primates, particularly in chimpanzees are still controversial, since the results vary depending on features such as the tasks performed and the environment where the individuals live. Determining when handedness installed in human evolution has been traced back through several methods, including paleoneurological analyses, stone tool flaking, zooarchaeological studies and the dental wear analyses, being the latest the most reliable one.



Incisors of Homo heidelbergensis from Sima de los Huesos site (Spain) - Equipo Investigación Atapuerca (EIA)


Here we report an experimental and paleoanthropological study about the hand laterality of a sample of 28 hominids from Sima de los Huesos (Atapuerca, Spain), dated at about 500.000 years ago, and we compare the results with the dental microwear analyzed in other fossil samples such as Krapina (Croatia), as well as modern traditional societies.

Results point that European Middle Pleistocene Homo heidelbergensis was already as right-handed as modern populations.

Fore more information:

Article "Right handedness of Homo heidelbergensis froma Sima de los Huesos (Atapuerca, Sapin) 500.000 years ago", Lozano, M; Mosquera, M; Bermúdez de Castro, JM; Arsuaga, JL and Carbonell, E.

Evolution and Human Behaviour (in press, avalaible on line)

Contact

Marina Lozano
Catalan Institute of Human Paleoecology and Social Evolution (IPHES)
Marina Mosquera Area of Prehistory (Rovira i Virgili University)

4 comments:

Leonel said...

Hola amiga meva te'n recordes de mi... fa anys ens escriviem per correu ordinari... jo sóc Joan Figueres i Guíxols... una abraçada des de XILE...

Cinta S. Bellmunt said...

Sí, m'enrecordo perfectament. Un plaer retrobar-te. Salutacions.

Anonymous said...

awesome blog, do you have twitter or facebook? i will bookmark this page thanks. lina holzbauer

Anonymous said...

I really like your blog and i really appreciate the excellent quality content you are posting here for free for your online readers. thanks peace dale tuck