Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Pes hippocampi
Inferior and posterior cornua, viewed from above. (Pes. hipp. labeled at center top.)
The lower end of the hippocampus is enlarged, and presents two or three rounded elevations or digitations which give it a paw-like appearance, and hence it is named the pes hippocampi (pes meaning foot) or pes hippocampi major