cool and weird stuff from the cliffs

So I finally own a digital camera so you all should be seeing alot more good posts from  me...cliffs permitting.  Anyway here are some interesting finds Ive had from the Calvert formation within the last year.

The first is a mystery bone I found why wading in the water. Looks like an antler to me but its hollow inside?

A meg stuck in concretion I dug out of a pile in April.

And a large piece of fossilized wood. Don't know what kind but its very brittle on the underbelly and very hard at the top...Pretty cool.