Restoring to older file in Time Machine need newer bookmarks

A month ago I upgraded to Yosemite and have been in computer **** ever since. Last night, I decided to return to Mountain Lion, where life was running smoothly. I erased my drive, turned Time Machine on to restore it back to working level and woke up this morning to find everything good as new. Now, I need all my browser bookmarks, documents, etc that I've added since that old back up. I figured out how to restore my docs and pics from a newer backup, but can't figure out how to do the bookmarks. Anyone know?