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Frontal sinuses and human evolution
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DOI：10.1126/sciadv.abp9767.png)
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Abstract
En 中文
The frontal sinuses are cavities inside the frontal bone located at the junction between the face and the cranial vault and close to the brain. Despite a long history of study, understanding of their origin and variation through evolution is limited. This work compares most hominin species' holotypes and other key individuals with extant hominids. It provides a unique and valuable perspective of the variation in sinuses position, shape, and dimen-sions based on a simple and reproducible methodology. We also observed a covariation between the size and shape of the sinuses and the underlying frontal lobes in hominin species from at least the appearance of Homo erectus. Our results additionally undermine hypotheses stating that hominin frontal sinuses were directly affected by biomechanical constraints resulting from either chewing or adaptation to climate. Last, we demon-strate their substantial potential for discussions of the evolutionary relationships between hominin species.
Keywords:
PARANASAL SINUSES
MIDDLE PLEISTOCENE
LAKE TURKANA
HOMO-SAPIENS
BROKEN-HILL
FOSSIL
PNEUMATIZATION
INSIGHTS
MORPHOLOGY
BOISEI
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