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Gray matter situated above the gyrus hippocampi. It is composed of three layers. The molecular layer is continuous with the HIPPOCAMPUS in the hippocampal fissure. The granular layer consists of closely arranged spherical or oval neurons, called granule cells, whose AXONS pass through the polymorphic layer ending on the DENDRITES of pyramidal cells in the hippocampus.

A band of gray matter seen beneath the taenia hippocampi on raising it up, which runs along the inner border of the cornu ammonis. It is, as it were, crenated by transverse furrows.

A serrated band under the hippocampus minor.