Earliest Homo

Title

Earliest Homo

Creator

Hill A; Ward S; Deino A; Curtis G; Drake R

Publisher

Nature

Date

1992
1992-02

Description

THE origin of our own genus, Homo, has been tentatively correlated with worldwide climatic cooling documented at about 2.4 Myr (million years) (refs 1-5). It has also been conjectured that members of Homo made the first stone tools, currently dated at 2.6 - 2.4 Myr (refs 6-8). But fossil specimens clearly attributable to Homo before about 1.9 Myr have been lacking. In 1967 a fossil hominoid temporal bone (KNM-BC1) from the Chemeron Formation of Kenya was described as family Hominidae gen. et sp. indet. 9. Although a surface find, its provenance within site JM85 (BPRP site K002) was established and a stratigraphic section provided indicating the specimen's position 9. This evidence has been affirmed (see for example refs 10-12) but the exact age of the fossil was never determined, and the absence of suitable comparative hominid material has precluded a more definitive taxonomic assignment. Here we present Ar-40/Ar-39 age determinations on material from the hominid site indicating an age of 2.4 Myr. In addition, comparative studies allow us to assign KNM-BC1 to the genus Homo, making it the earliest securely known fossil of our own genus found so far.

Subject

baringo; calibration; east; fossil hominids; kenya; pliocene; region; Science & Technology - Other Topics; turkana

Identifier

Format

Journal Article or Conference Abstract Publication

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

719-722

Issue

6362

Volume

355

Citation

Hill A; Ward S; Deino A; Curtis G; Drake R, “Earliest Homo,” NEOMED Bibliography Database, accessed September 19, 2021, https://neomed.omeka.net/items/show/10195.

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