what kind of fossil?

[sarduvan]

Hi,
I found this fosil on Gerede region (in Turkey) several days ago.

15x10 cm. size and 830 gr.(0,83 kg.) weight.

I attach some pictures and I want to know what kind of fossil?
Thanks a lot for your help

[Editted by sarduvan on 07-11-2012 at 22:35 GMT +1]

[Editted by sarduvan on 07-11-2012 at 22:36 GMT +1]

[Editted by sarduvan on 07-11-2012 at 22:37 GMT +1]

[Alopias]

maybe fossil wood? but I'm not sure

greet
Aaron

[Elbert]

Hallo, I think this is an oystershell(lower valve), you can see the layering.

greetings, Bert

[Fossicker]

It is an oyster shell.

[Editted by Fossicker on 27-01-2013 at 13:38 GMT +1]

[DreamWeaver]

It certainly has the look of petrified wood, but I'm 100% with Fossicker and Elbert on this: it's an oyster.