The Geological, Isotopic, Botanical, Invertebrate, and Lower Vertebrate Surroundings of Ardipithecus ramidus

被引：112

作者：

WoldeGabriel, Giday ^{[1
]}

Ambrose, Stanley H. ^{[2
]}

Barboni, Doris ^{[3
]}

Bonnefille, Raymonde ^{[3
]}

Bremond, Laurent ^{[4
]}

Currie, Brian ^{[5
]}

DeGusta, David ^{[6
]}

Hart, William K. ^{[5
]}

Murray, Alison M. ^{[7
]}

Renne, Paul R. ^{[8
,9
]}

Jolly-Saad, M. C. ^{[10
]}

Stewart, Kathlyn M. ^{[11
]}

White, Tim D. ^{[12
,13
]}

机构：

[1] Los Alamos Natl Lab, Earth Environm Sci Div, Los Alamos, NM 87545 USA

[2] Univ Illinois, Dept Anthropol, Urbana, IL 61801 USA

[3] Univ Aix Marseille, CNRS, MR6635, CEREGE, F-13545 Aix En Provence 4, France

[4] Univ Montpellier 2, CNRS, EPHE, Ctr Bioarchaeol & Ecol,UMR5059,Inst Bot, F-34090 Montpellier, France

[5] Miami Univ, Dept Geol, Oxford, OH 45056 USA

[6] Stanford Univ, Dept Anthropol, Stanford, CA 94305 USA

[7] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada

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

[9] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA

[10] Univ Paris Ouest La Def, Ctr Henri Elhai, F-92001 Nanterre, France

[11] Canadian Museum Nat, Ottawa, ON K1P 6P4, Canada

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

[13] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA

来源：

SCIENCE | 2009年 / 326卷 / 5949期

基金：

美国国家科学基金会;

关键词：

CARBON; CLASSIFICATION; VEGETATION; RESOLUTION; HABITAT; AFRICA; ARAMIS; RIFT;

D O I：

10.1126/science.1175817

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：

Sediments containing Ardipithecus ramidus were deposited 4.4 million years ago on an alluvial floodplain in Ethiopia's western Afar rift. The Lower Aramis Member hominid-bearing unit, now exposed across a >9-kilometer structural arc, is sandwiched between two volcanic tuffs that have nearly identical 40Ar/39Ar ages. Geological data presented here, along with floral, invertebrate, and vertebrate paleontological and taphonomic evidence associated with the hominids, suggest that they occupied a wooded biotope over the western three-fourths of the paleotransect. Phytoliths and oxygen and carbon stable isotopes of pedogenic carbonates provide evidence of humid cool woodlands with a grassy substrate.

引用

页码：65e1 / 65e5

页数：5

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