part of part of Homo sapiens sphenoid bone zone of bone organ lesser wings of sphenoid bone 2026-03-19T00:00:00Z A zone of bone organ forming the pair of triangular horizontal plates that project laterally from the anterosuperior aspect of the sphenoid body, lying in the floor of the anterior cranial fossa and forming the roof of the orbit posteriorly; each lesser wing is connected to the body by two roots enclosing the optic canal. David Osumi-Sutherland