The fonts may have been corrupted in the Windows box if you had transferred them from one.
This article has some information on font problems, with a link at the bottom to font fixers. Unfortunately, all of them in the list cost money.
This will allow you to print the fonts, but it's 12 bucks. There are others, and some might be free. Go to versiontracker.com or macupdate.com and search for fonts print.
But you might be able to work around the problem by opening Font Book and clicking on one of the fonts. Then in the menu bar go to File>Show Font File. When the window opens, change it to "as List" under View in the menu bar, then Hide Toobar. Take a Shift-Command-4-spacebar screenshot of the list, or crop even more out of the picture by using Shift-Command-4 and the mouse, without the spacebar. You could then print the picture listing the fonts.