adjacent to adjacent to dentate gyrus of hippocampal formation subiculum hippocampal sulcus https://upload.wikimedia.org/wikipedia/commons/9/99/Hippocampus.gif sulcus hippocampi EMAPA:36471 BAMS:hf dentate fissure hippocampal fissure The hippocampal sulcus, also known as the hippocampal fissure, is a sulcus that separates the dentate gyrus from the subiculum and the CA1 field in the hippocampus. [WP,unvetted]. HIS MBA:1063 UBERON:0002899 Wikipedia:Hippocampal_sulcus neuronames:42 NCIT:C32743 FMA:83747 sulcus hippocampi UMLS:C0228251 two classes in ncit (in general ncit distinguishes between fissure and sulcus, whereas FMA treats these as exact synonyms) BAMS:his SCTID:369101000 HBA:9394 sulcus hippocampalis DHBA:10619 BIRNLEX:4004 hippocampal fissure (Gratiolet) CA1 field of hippocampus subarachnoid sulcus