This week I have a bony mystery oibject for you, measuring 49mm long:
If you have any idea what this might be, you can leave your suggestions in the comments below. Have fun with it!
Friday mystery object #542
Zygoma
Adventures in natural history collections
Zygoma 
Western, American and blue?
A Lennon-McCartney number released in 1968 and appearing on the oppositely named album?