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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
First occurrence of early Homo in the Nachukui Formation (West Turkana, Kenya) at 2.3-2.4 Myr
Journal of Human Evolution, Volume 49, No. 2, Year 2005
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Description
Cognitive abilities and techno-economic behaviours of hominids in the time period between 2.6-2.3 Myr have become increasingly well-documented. This time period corresponds to the oldest evidence for stone tools at Gona (Kada Gona, West Gona, EG 10-12, OGS 6-7), Hadar (AL 666), lower Omo valley (Ftji1, 2 & 5, Omo 57, Omo 123) in Ethiopia, and West Turkana (Lokalalei sites -LA1 & LA2C-) in Kenya. In 2002 a new palaeoanthropological site (LA1α), 100 meters south of the LA1 archaeological site, produced a first right lower molar of a juvenile hominid (KNM-WT 42718). The relative small size of the crown, its marked MD elongation and BL reduction, the relative position of the cusps, the lack of a C6 and the mild expression of a protostylid, reinforced by metrical analyses, demonstrate the distinctiveness of this tooth compared with Australopithecus afarensis, A. anamensis, A. africanus and Paranthropus boisei, and its similarity to early Homo. The LA1α site lies 2.2 m above the Ekalalei Tuff which is slightly younger than Tuff F dated to 2.34 ± 0.04 Myr. This juvenile specimen represents the oldest occurrence of the genus Homo in West Turkana. © 2005 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Prat, Sandrine
France, Paris
Dynamique de L'évolution Humaine Cnrs Upr 2147
Brugal, Jean Philip
France, Paris
Cnrs Centre National de la Recherche Scientifique
Tiercelin, Jean Jacques
France, Plouzane
Laboratoire Geo-ocean
Barrat, J. A.
France, Plouzane
Laboratoire Geo-ocean
Bohn, Marcel
France, Plouzane
Laboratoire Geo-ocean
Delagnes, Anne
France, Pessac
De la Préhistoire à L'actuel : Culture, Environnement et Anthropologie
Harmand, Sonia
France, Nanterre
Umr 7055 du Cnrs
Kimeu, Kamoya
Kenya, Nairobi
National Museums of Kenya
Kibunjia, Mzalendo
Kenya, Nairobi
National Museums of Kenya
Texier, Pierre Jean
France, Nice
Cultures et Envirronements, Préhistoire, Antiquité, Moyen-age
Roche, Hélène
France, Nanterre
Umr 7055 du Cnrs
Statistics
Citations: 82
Authors: 11
Affiliations: 7
Identifiers
Doi:
10.1016/j.jhevol.2005.03.009
ISSN:
00472484
Study Locations
Ethiopia
Kenya