The term peripaleocortex refers to one of two components of periallocortex defined on the basis of cytoarchitecture; the other is periarchicortex. Peripaleocortex is found at the rostral extreme of the insula where it approaches the claustrum and the piriform cortex. It is regarded as being the same as area 16 of Brodmann (guenon) in monkeys ( Stephan-1976; Zilles-1990 ).