Boutakiout M

Eggins S

Grun R

Hublin J-J

Reid DJ

Smith TM

Tafforeau P

Recent developmental studies demonstrate that early fossil hominins possessed shorter growth periods than living humans, implying disparate life histories. Analyses of incremental features in teeth provide an accurate means of assessing the age at death of developing dentitions, facilitating direct comparisons with fossil and modern humans. It is currently unknown when and where the prolonged modern human developmental condition originated. Here, an application of x-ray synchrotron microtomography reveals that an early Homo sapiens juvenile from Morocco dated at 160,000 years before present displays an equivalent degree of tooth development to modern European children at the same age. Crown formation times in the juvenile\u27s macrodont dentition are higher than modern human mean values, whereas root development is accelerated relative to modern humans but is less than living apes and some fossil hominins. The juvenile from Jebel Irhoud is currently the oldest-known member of Homo with a developmental pattern (degree of eruption, developmental stage, and crown formation time) that is more similar to modern H. sapiens than to earlier members of Homo. This study also underscores the continuing importance of North Africa for understanding the origins of human anatomical and behavioral modernity. Corresponding biological and cultural changes may have appeared relatively late in the course of human evolution. \ua9 2007 by The National Academy of Sciences of the USA

Newcastle University E-Prints

Earliest evidence of modern human life history in North African early Homo sapiens

https://eprint.ncl.ac.uk/file_store/production/56388/30BABCFD-A238-44C4-A949-275638B5D0B4.pdf

Earliest evidence of modern human life history in North African early Homo sapiens

Abstract

Similar works

Full text

Available Versions

Newcastle University E-Prints