On the squamosal suture of KNM‐WT 17000

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Abstract

The extensive overlap of the temporal squama on the parietal in KNM‐WT 17000 is restricted to a narrow segment of the arc of the squamosal suture. It appears as a long, narrow, posterosuperior extension onto the calvarial wall. The long axis of this extended strip is aligned with what appears to be the most hypertrophied section of the temporalis muscle fan. The substantial differences between the squamosal suture and associated masticatory elements of KNM‐WT 17000 and those of Australopithecus boisei provide an opportunity to evaluate the various forces molding the anatomy of the squamosal suture of A. boisei. It is suggested that the extreme flare of the zygomatic arches in the latter accounts for these differences.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalAmerican journal of physical anthropology
Volume85
Issue number1
DOIs
StatePublished - May 1991

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Keywords

  • Australopithecus boisei
  • Masticatory system
  • Temporal squama

ASJC Scopus subject areas

  • Anatomy
  • Anthropology

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