Cited by 1,241Geology and Paleoclimatology ResearchPleistocene-Era Hominins and ArchaeologyClimate variability and models

Plio-Pleistocene African Climate

deMenocal, Peter B.·1995·Science

Abstract

Marine records of African climate variability document a shift toward more arid conditions after 2.8 million years ago (Ma), evidently resulting from remote forcing by cold North Atlantic sea-surface temperatures associated with the onset of Northern Hemisphere glacial cycles. African climate before 2.8 Ma was regulated by low-latitude insolation forcing of monsoonal climate due to Earth orbital precession. Major steps in the evolution of African hominids and other vertebrates are coincident with shifts to more arid, open conditions near 2.8 Ma, 1.7 Ma, and 1.0 Ma, suggesting that some Pliocene (Plio)-Pleistocene speciation events may have been climatically mediated.

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Crossref · 10.1126/science.270.5233.53

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66 of 66 references verified0 citation errors · 0 not checkable

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  • The derived craniofacial features of Australopithecus species have long been interpreted as adaptations to mechanically tough or hard plant foods that dominated in African environments during late Pliocene aridification at or before 2.8-2.7 Ma.

    “These derived features have long been interpreted as adaptations to mechanically tough or hard plant foods that dominated in African environments during a period of aridification in the late Pliocene (≤ 2.8-2.7 Ma) 20,21”

    From The evolutionary history of the human face (2019) · cites this paper as [20]

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Authors
deMenocal, P. B.
Affiliations
Lamont-Doherty Earth Observatory (US)
Corresponding author
deMenocal, Peter B.
Venue
Science
Published
1995-10-06
Volume
270
Issue
5233
Pages
53-59
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2008205524
Cited by
1,241
References
66
Citations by year
2026: 27 · 2025: 37 · 2024: 39 · 2023: 40 · 2022: 54 · 2021: 51 · 2020: 79 · 2019: 53 · 2018: 39 · 2017: 36 · 2016: 51 · 2015: 41 · 2014: 49 · 2013: 54 · 2012: 46
FWCI
13.26
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
Keywords
African climate, Plio-Pleistocene, aridification, monsoon, orbital precession, North Atlantic sea surface temperature, Northern Hemisphere glaciation, hominin evolution, paleoclimate, marine sediment records
MeSH terms
Africa, Animals, Climate, Biological Evolution, Fossils, Humans, Hominidae, Geologic Sediments

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