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Cited by 285Pleistocene-Era Hominins and ArchaeologyPrimate Behavior and EcologyEvolution and Paleontology Studies

The DOI matches its Crossref record; 96 of the 98 references it cites were found in a registry or an index.

Brain size and encephalization in early to Mid‐Pleistocene Homo

Rightmire, G. Philip·2004·American Journal of Physical Anthropology
DOI 10.1002/ajpa.10346
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Abstract

Important changes in the brain have occurred during the course of human evolution. Both absolute and relative size increases can be documented for species of Homo, culminating in the appearance of modern humans. One species that is particularly well-represented by fossil crania is Homo erectus. The mean capacity for 30 individuals is 973 cm(3). Within this group there is substantial variation, but brain size increases slightly in specimens from later time periods. Other Middle Pleistocene crania differ from those of Homo erectus. Characters of the facial skeleton, vault, and cranial base suggest that fossils from sites such as Arago Cave in France, the Sima de los Huesos in Spain, Bodo in Ethiopia, Broken Hill in Zambia, and perhaps Dali in China belong to the taxon Homo heidelbergensis. Ten of these mid-Quaternary hominins have brains averaging 1,206 cm(3) in volume, and many fall beyond the limits of size predicted for Homo erectus of equivalent age. When orbit height is used to construct an index of relative brain size, it is apparent that the (significant) increase in volume documented for the Middle Pleistocene individuals is not simply a consequence of larger body mass. Encephalization quotient values confirm this finding. These changes in absolute and relative brain size can be taken as further corroborative evidence for a speciation event, in which Homo erectus produced a daughter lineage. It is probable that Homo heidelbergensis originated in Africa or western Eurasia and then ranged widely across the Old World. Archaeological traces indicate that these populations differed in their technology and behavior from earlier hominins.

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Research works printed but not linked: 21

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Authors
Rightmire, G. P.
Affiliations
Binghamton University (US)
Corresponding author
Rightmire, G. Philip
ORCID
Rightmire, G. Philip
Venue
American Journal of Physical Anthropology
Publisher
Wiley
Published
2003-09-08
Volume
124
Issue
2
Pages
109-123
ISSN
  • 0002-9483 (ISSN-L)
  • 1096-8644
DOI
10.1002/ajpa.10346
OpenAlex
W2061810403
Cited by
285
References
98
Citations by year
2026: 10 · 2025: 15 · 2024: 5 · 2023: 8 · 2022: 6 · 2021: 17 · 2020: 8 · 2019: 28 · 2018: 10 · 2017: 18 · 2016: 9 · 2015: 16 · 2014: 24 · 2013: 19 · 2012: 15
FWCI
6.27
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Locations
  • American Journal of Physical Anthropology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Universitas Gadjah Mada
Topics
  • Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Primate Behavior and Ecology
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
Keywords
brain size, encephalization, Homo erectus, Homo heidelbergensis, Middle Pleistocene hominins, brain volume, encephalization quotient, skull morphology, Sima de los Huesos, Bodo, Broken Hill, Dali, human evolution
MeSH terms
Animals, Brain, Biological Evolution, Fossils, Humans, Skull, Hominidae

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