Can someone help me I.D.?

[Muncie]

Could someone help me I'd 

[Fossildude19]

Welcome to the Forum.  

Where was this found?

What size is it?

 

My first impression was a cephalopod or ammonite/ammonoid. 

 

[Muncie]

Muncie Indiana it was in my wall in front yard.its river rock

[Fossildude19]

According to the Geological Bedrock Map, Muncie is located in Silurian aged sediments.

 

So this would be an imprint of the outer shell of an Orthocone Cephalopod. 

 

 

Brightened your picture a bit:

 

 

Not sure on what Genus or Species this is, but it is cool looking with the detail showing on that.

Maybe someone more local will chime in.

Regards, 

 

 

 

EDIT:  If you are interested in looking into this further, you might check out this PDF.

[Muncie]

Muncie Indiana it was in my wall in front yard.its river rock

[Muncie]

Looks like a snake skin