The term layers of the presubiculum refers to cyto- and myeloarchitecturally defined substructures of the presubiculum. The three layers are reported in the macaque. Beginning from the surface of the brain they are: the molecular layer of the presubiculum (layer I), the principal layer of the presubiculum (layer 2) and the pyramidal layer of the presubiculum (layer 3) ( Bakst-1984 ). Six layers are distinguised in the rat ( Swanson-2004 ).