The subcallosal area is a small triangular field on the medial surface of the hemisphere in front of the subcallosal gyrus, from which it is separated by the posterior parolfactory sulcus; it is continuous below with the olfactory trigone

Olfactory trigone

The olfactory trigone is a small triangular area in front of the anterior perforated substance.Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract....

, and above and in front with the cingulate gyrus; it is limited anteriorly by the anterior parolfactory sulcus.

The subcallosal area is also known as "Zuckerkandl's gyrus", for Emil Zuckerkandl

Emil Zuckerkandl

----Emil Zuckerkandl was a Hungarian-Austrian anatomist.He was educated at the University of Vienna and was an admiring student of Josef Hyrtl...

.

The parahippocampal gyrus

Parahippocampal gyrus

The parahippocampal gyrus is a grey matter cortical region of the brain that surrounds the hippocampus. This region plays an important role in memory encoding and retrieval....

, subcallosal area, and cingulate gyrus have been described together as the periarcheocortex.

The "subcallosal area" and "parolfactory area" are considered equivalent in BrainInfo, but in Terminologia Anatomica

Terminologia Anatomica

Terminologia Anatomica is the international standard on human anatomic terminology. It was developed by the Federative Committee on Anatomical Terminology and the International Federation of Associations of Anatomists and was released in 1998. It supersedes the previous standard, Nomina...

they are considered distinct structures.