ID please

[Opticalillusion]

I found a concentration concretion a while back and used the freeze/thaw method.

Seems to be some sort of fossil inside but not sure what it is.

 

 

 

[zaneharrin]

I'm not an expert on this stuff but for the people that might know a location would be an necessary thing to find your id

[Fossildude19]

 

34 minutes ago, zaneharrin said:

I'm not an expert on this stuff but for the people that might know a location would be an necessary thing to find your id

 

The tag says Illinois, so I am guessing carboniferous/Mazon Creek type siderite concretion.

Maybe a Cordaites or Cyperites leaf?

 

 

@Mark Kmiecik  @stats  @deutscheben  @RCFossils  @fiddlehead

 

[zaneharrin]

1 minute ago, Fossildude19 said:

 

 

The tag says Illinois, so I am guessing carboniferous/Mazon Creek type siderite concretion.

Maybe a Cordaites or Cyperites leaf?

 

 

@Mark Kmiecik  @stats  @deutscheben  @RCFossils  @fiddlehead

 

I caught that to but I think Illinois varies quite a bit in geological ages so I was just wondering 

[Fossildude19]

I agree - the location where the item was found should always be posted in the body of the topic. State/County/nearest city is always helpful.

 

Definitely some different eras present in Illinois.

But given the images, I can infer a Carboniferous age for the fossil.

[Rockwood]

Looks like a Mazon concretion to me. I think it's a flattened Calamites branch though.