The monticulus of the cerebellum is divided by the primary fissure (or preclival fissure) into an anterior raised part the culmen or summit and a posterior sloped part the clivus; the quadrangular lobule is similarly divided.
This page contains content from the copyrighted Wikipedia article "Primary fissure of cerebellum"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.