Topic summary
Strepsirrhine
Extracted from the Wikipedia article Strepsirrhini.
Skull
Strepsirrhine primates have a brain relatively comparable to or slightly larger in size than most mammals. Compared to simians, however, they have a relatively small brain-to-body size ratio. Strepsirrhines are also traditionally noted for their unfused mandibular symphysis (two halves of the lower jaw), however, fusion of the mandibular symphysis was common in adapiforms, notably Notharctus. Also, several extinct giant lemurs exhibited a fused mandibular symphysis.