Fossil Corals: What a day!

Sunday it was a very lazy day...until five o'clock, when I have decided to search for some fossils.
And here you can see what an interesting Ostrea edulis I had discovered .
It measures 16cm / 12cm and weighs more then 1000g.

before cleaning :

and after cleaning :

One of the fossil coral
 before cleaning

and after some cleaning...

another coral :

Beautiful indeed !