Trilobite cephalon ?

[Rockwood]

This was found in an esker near Bingham, Maine. Most of the rocks in the line of glacial scour are mid Devonian and below, marine formations.

It looks like the left side of a cephalon, labeled as a librigenea in the morphology section on Wiki .

[westcoast]

Yes indeed. A nice trilo bit

[minnbuckeye]

Looks to me to be a partial mucospirifer?? picture from forum member Pohju.

[FossilDAWG]

I'm with Rockwood on this, it is a "free cheek" (= librigenea).  

 

Don

[ClearLake]

I agree, it looks like a free cheek from a trilobite. 

[Rockwood]

Thanks guys.

Anyone who has been to U-Dig (in Utah) knows they are the first things to be cut free all right.