Frayer David W, Clarke Ronald J, Fiore Ivana, Blumenschine Robert J, Pérez-Pérez Alejandro, Martinez Laura M, Estebaranz Ferran, Holloway Ralph, Bondioli Luca
Department of Anthropology, University of Kansas, Lawrence, KS, USA.
Evolutionary Studies Institute, University of the Witwatersrand, Private Bag 3, WITS, 2040, Johannesburg, South Africa.
J Hum Evol. 2016 Nov;100:65-72. doi: 10.1016/j.jhevol.2016.07.002.
Labial striations on the anterior teeth have been documented in numerous European pre-Neandertal and Neandertal fossils and serve as evidence for handedness. OH-65, dated at 1.8 mya, shows a concentration of oblique striations on, especially, the left I and right I, I and C, which signal that it was right-handed. From these patterns we contend that OH-65 was habitually using the right hand, over the left, in manipulating objects during some kind of oral processing. In living humans right-handedness is generally correlated with brain lateralization, although the strength of the association is questioned by some. We propose that as more specimens are found, right-handedness, as seen in living Homo, will most probably be typical of these early hominins.
在众多欧洲前尼安德特人和尼安德特人化石中都记录了前牙上的唇纹，这些唇纹可作为用手习惯的证据。年代测定为180万年前的OH-65，尤其在左I和右I、I和C上显示出斜纹集中，这表明它是右利手。从这些模式中我们认为，OH-65在某种口腔加工过程中习惯性地使用右手而非左手来操纵物体。在现代人类中，右利手通常与大脑偏侧化相关，尽管这种关联的强度受到一些人的质疑。我们提出，随着更多标本被发现，现代智人中所见的右利手很可能也是这些早期人类的典型特征。
