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Statistical inference of earlier origins for the first flaked stone technologies

Key, Alastair J. M., Roberts, David L., Jarić, Ivan (2021) Statistical inference of earlier origins for the first flaked stone technologies. Journal of Human Evolution, 154 . Article Number 102976. ISSN 0047-2484. (doi:10.1016/j.jhevol.2021.102976) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:87304)

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Official URL
https://doi.org/10.1016/j.jhevol.2021.102976

Abstract

Identifying when hominins first produced Lomekwian, Oldowan, and Acheulean technologies is vital to multiple avenues of human origins research. Yet, like most archaeological endeavors, our understanding is currently only as accurate as the artifacts recovered and the sites identified. Here we use optimal linear estimation (OLE) modelling to identify the portion of the archaeological record not yet discovered, and statistically infer the date of origin of the earliest flaked stone technologies. These models provide the most accurate framework yet for understanding when hominins first produced these tool types. Our results estimate the Oldowan to have originated 2.617 to 2.644 Ma, 36,000 to 63,000 years earlier than current evidence. The Acheulean’s origin is pushed back further through OLE, by at least 55,000 years to 1.815 to 1.823 Ma. We were unable to infer the Lomekwian’s date of origin using OLE, but an upper bound of 5.1 million years can be inferred using alternative nonparametric techniques. These dates provide a new chronological foundation from which to understand the emergence of the first flaked stone technologies, alongside their behavioral and evolutionary implications. Moreover, they suggest there to be substantial portions of the artifact record yet to be discovered.

Item Type: Article
DOI/Identification number: 10.1016/j.jhevol.2021.102976
Uncontrolled keywords: Lomekwian, Oldowan, Acheulean, Optimal linear estimation modelling, Early Stone Age, East African archaeology
Subjects: G Geography. Anthropology. Recreation > GN Anthropology
Divisions: Divisions > Division of Human and Social Sciences > School of Anthropology and Conservation
Divisions > Division of Human and Social Sciences > School of Anthropology and Conservation > DICE (Durrell Institute of Conservation and Ecology)
Depositing User: Alastair Key
Date Deposited: 24 Mar 2021 13:15 UTC
Last Modified: 25 Mar 2021 11:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/87304 (The current URI for this page, for reference purposes)
Key, Alastair J. M.: https://orcid.org/0000-0001-5576-1200
Roberts, David L.: https://orcid.org/0000-0001-6788-2691
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