The term fasciolar gyrus refers to a tiny bundle of gray matter and white matter identified by dissection and histology in the human ( Carpenter-1983 ) and the macaque ( Martin-2000 ). Located in the hippocampus of the limbic lobe it adheres to, and curves around the splenium of the corpus callosum. It is connected below to the hippocampal complex and above to the supracallosal gyrus. It is composed of gray matter fasciola cinerea and white matter longitudinal striae The rat ( Swanson-2004 ) and the mouse ( Hof-2000 ) have fasciola cinerea but lack longitudinal striae. Updated 17 May 2024.