In the rat, the neocortex can be viewed as having the following organization:

Neocortex
1.  Fields of
   1.1.  Visual Cortex
      1.1.1.  Layers of...
         1.1.1.1.  Cells of...
   1.2.  Auditory Cortex
      1.2.1.  Layers of...
         1.2.1.1.  Cells of...
   1.3.  Somatosensory
      1.3.1.  Layers of...
         1.3.1.1.  Cells of...
   1.4.  Motor
      1.4.1.  Layers of...
         1.4.1.1.  Cells of...
   1.5.  Frontal
      1.5.1.  Layers of...
         1.5.1.1.  Cells of...