Need help Id may be Trilobites Not sure

[davidcpowers]

Found fossils in Little Belt Moutain, in Montana. Sandstone, from Park Formation, listed as Franconian, Cambrian. Each fossil fragment is about 5mm. Other fossils present. Need to find the Identification for the dark brown shell-like fossils. I believe they may be parts of trilobite cephalons.   

[ynot]

Look like cephalon pieces.

[westcoast]

Absolutely trilobite. Nice collection. Others will give precise Id.

[Tidgy's Dad]

Yes, trilobite pieces, looks quite similar to Elrathia to me, but probably isn't. 

@piranha

[davidcpowers]

Hey, thank you for the help. These are the second body fossils I found in this formation. These trilobite pieces are small enough not to be noticed.  I now have a reference for when I find more.