[Rockhounds] Mazon Creek Fossil

[Kreigh Tomaszewski]

Looks like Annularia, the leaves from Calamites.

On Saturday, Oct 11, 2008, at 20:41 America/Detroit, John Siebel wrote:

> Hi folks,
>
> I'm looking for help in identifying a Mazon Creek (Illinois) fossil 
> that I received from a fellow list member a while back (Thanks 
> Steve!). It looks like it could be a shell imprint but than again 
> possibly plant matter of some kind. The plate measures 7cm wide. I 
> ain't no expert so any help is appreciated. View image at 
> http://www.flickr.com/photos/31394106@N08/?saved=1
>
> Thanks for your help - John
> PS. I just noticed, under magnification, that the surface is peppered 
> with tiny pyrite cubes. How cool!
>
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