A very bioarchaeology Christmas tree!

Grades are in!  Department holiday party is over!  Sure, I'll be working the rest of the week on syllabi for my spring courses, but I decided to spend an hour today putting my own bioarchaeological spin on this book-Xmas-tree meme that's been going around... 

Merry (very early) Christmas from Powered by Osteons!  (Yes, I know it's actually the first day of Hanukkah today, but if I could figure out how to make a skeleton-book-themed menorah, I would...)