Late Pliocene fossiliferous sedimentary record and the environmental context of early Homo from Afar, Ethiopia

被引：56

作者：

DiMaggio, Erin N. ^{[1
]}

Campisano, Christopher J. ^{[2
]}

Rowan, John ^{[2
]}

Dupont-Nivet, Guillaume ^{[3
]}

Deino, Alan L. ^{[4
]}

Bibi, Faysal ^{[5
]}

Lewis, Margaret E. ^{[6
]}

Souron, Antoine ^{[7
]}

Garello, Dominique ^{[8
]}

Werdelin, Lars ^{[9
]}

Reed, Kaye E. ^{[2
]}

Arrowsmith, J. Ramon ^{[8
]}

机构：

[1] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA

[2] Arizona State Univ, Inst Human Origins, Sch Human Evolut & Social Change, Tempe, AZ 85287 USA

[3] CNRS Geosci Rennes, F-35042 Rennes, France

[4] Berkeley Geochronol Ctr, Berkeley, CA 94709 USA

[5] Museum Nat Kunde, Leibniz Inst Evolut & Biodivers Sci, D-10115 Berlin, Germany

[6] Stockton Univ, Biol Program, Galloway, NJ 08205 USA

[7] Univ Calif Berkeley, Human Evolut Res Ctr, Berkeley, CA 94720 USA

[8] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[9] Swedish Museum Nat Hist, Dept Palaeobiol, SE-10405 Stockholm, Sweden

来源：

SCIENCE | 2015年 / 347卷 / 6228期

基金：

美国国家科学基金会;

关键词：

HADAR FORMATION; EVOLUTION; PLIOPLEISTOCENE; AFRICA; RIFT; DEPRESSION; GONA; SITE; MA;

D O I：

10.1126/science.aaa1415

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Sedimentary basins in eastern Africa preserve a record of continental rifting and contain important fossil assemblages for interpreting hominin evolution. However, the record of hominin evolution between 3 and 2.5 million years ago (Ma) is poorly documented in surface outcrops, particularly in Afar, Ethiopia. Here we present the discovery of a 2.84- to 2.58-million-year-old fossil and hominin-bearing sediments in the Ledi-Geraru research area of Afar, Ethiopia, that have produced the earliest record of the genus Homo. Vertebrate fossils record a faunal turnover indicative of more open and probably arid habitats than those reconstructed earlier in this region, which is in broad agreement with hypotheses addressing the role of environmental forcing in hominin evolution at this time. Geological analyses constrain depositional and structural models of Afar and date the LD 350-1 Homo mandible to 2.80 to 2.75 Ma.

引用

页码：1355 / 1359

页数：5

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