Small Fossil in Agate

[romeo-1]

I've found a few fossils but this is the first I've found in agate. From the Annapolis Valley in Nova Scotia.

 

[Red-Coat]

It's the fossil cast of the partial shell of a brachiopod... a marine animal sometimes known as a 'lamp-shell', with the shell hinged for top/bottom opening rather than left/right like bivalve molluscs. Nice that its agatized.