The cerebellum lies over the brainstem and behind or beneath the caudal parts of the telencephalon. Like the cerebrum, the cerebellum is covered with a thin sheet of cortex and it is found in all vertebrates. In mammals and birds, the cerebellar cortex is extremely convoluted, whereas in mammals the cerebral cortex over the forebrain is relatively smooth in many animals (many rodents, and to some extent the manatee).
Eight views of the cerebellum and brainstem of manatee 86-150 are shown here. This block of brain tissue has been separated from the forebrain to reveal all its external morphological details. The cerebellar cortex is seen to be convoluted into numerous folia or folds which are generally aligned in elongate form. The different folia are grouped into several lobes and lobules, such as anterior lobe, posterior lobe, the right and left hemispheres, paraflocullus, floculus, and nodulus (not visible), paramedian lobe, uvula.
These subdivisions will be identified in the colored picture and the black and white labeled photo panels below, together with a brief list of references to the published literature.

A coronal section taken through the middle of the cerebellum reveals not only the convoluted cerebellar cortex, but also the deep nuclei of the cerebellum (fastigial, interpositus and dendate nuclei) embedded in the white matter at the base of the cerebellum, and overlying the medulla.