A new approach to mammalian cranial analysis, illustrated by examples of prosimian primates

摘要: Latex endocranial casts, which may be made without damaging the skull, reveal much of information provided by a hemisected skull. Examination drawings endocasts superimposed on skulls provide insight into biological significance skull and brain morphology. The high degree cranial flexion globose shape Daubentonia appear to related functional demands its gnawing mechanism. broad frontal lobes indriids are correlated with orbital orientation; differences in lobe sulcal pattern suggest greater elaboration motor filed for hand than lemurids. Several features lorisid anatomy discussed. It is suggested that, as first approximation, increased splanchnocranial declination small prosimians results from necessity accommodating relatively large eyes splanchnocranium.