My Big Whaleboner

Today while hunting for Miocene petrified whalebone from the Monterey Formation and biconoids from the Franciscan Melange in Templeton, CA, I discovered this end-piece of a large petrified Miocene whalebone, parts of which are highly silicated. This is the first such piece of I have ever found in regards to end-pieces with ball-joints. It is also one of the largest pieces of petrified whalebone I have ever found.

Photo by Kim Patrick Noyes (all rights reserved).