The geological, lsotopic, botanical, invertebrate, and lower vertebrate surroundings of ardipithecus ramidus

Giday Woldegabriel; Stanley H. Ambrose; Doris Barboni; Raymonde Bonnefille; Laurent Bremond; Brian Currie; David Degusta; William K. Hart; Alison M. Murray; Paul R. Renne; M. C. Jolly-Saad; Kathlyn M. Stewart; Tim D. White

doi:10.1126/science.1175817

The geological, lsotopic, botanical, invertebrate, and lower vertebrate surroundings of ardipithecus ramidus

Giday Woldegabriel, Stanley H. Ambrose, Doris Barboni, Raymonde Bonnefille, Laurent Bremond, Brian Currie, David Degusta, William K. Hart, Alison M. Murray, Paul R. Renne, M. C. Jolly-Saad, Kathlyn M. Stewart, Tim D. White

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Pages (from-to)	65e1-65e5
Journal	Science
Volume	326
Issue number	5949
DOIs	https://doi.org/10.1126/science.1175817
State	Published - 2009

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Woldegabriel, G., Ambrose, S. H., Barboni, D., Bonnefille, R., Bremond, L., Currie, B., Degusta, D., Hart, W. K., Murray, A. M., Renne, P. R., Jolly-Saad, M. C., Stewart, K. M., & White, T. D. (2009). The geological, lsotopic, botanical, invertebrate, and lower vertebrate surroundings of ardipithecus ramidus. Science, 326(5949), 65e1-65e5. https://doi.org/10.1126/science.1175817

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title = "The geological, lsotopic, botanical, invertebrate, and lower vertebrate surroundings of ardipithecus ramidus",

abstract = "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.",

author = "Giday Woldegabriel and Ambrose, {Stanley H.} and Doris Barboni and Raymonde Bonnefille and Laurent Bremond and Brian Currie and David Degusta and Hart, {William K.} and Murray, {Alison M.} and Renne, {Paul R.} and Jolly-Saad, {M. C.} and Stewart, {Kathlyn M.} and White, {Tim D.}",

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AU - Woldegabriel, Giday

AU - Ambrose, Stanley H.

AU - Barboni, Doris

AU - Bonnefille, Raymonde

AU - Bremond, Laurent

AU - Currie, Brian

AU - Degusta, David

AU - Hart, William K.

AU - Murray, Alison M.

AU - Renne, Paul R.

AU - Jolly-Saad, M. C.

AU - Stewart, Kathlyn M.

AU - White, Tim D.

PY - 2009

Y1 - 2009

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AB - 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.

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The geological, lsotopic, botanical, invertebrate, and lower vertebrate surroundings of ardipithecus ramidus

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