2013 (UTC) 

 Thanks for your feedback!  The evolution section has been moved to after the anatomy section and subheadings were added in the functions section; I agree this definitely helps to break it up. The information from the 1993 source is about the structure and organization of the olfactory bulb which has not changed and is therefore still up to date, but it is definitely important to keep in mind how old sources are.  Thanks again for your comments!  19:50, 3 December