Northern Missouri Trilobite Pygidium?

[Titan]

Hi All,

I found this specimen in northern Missouri many years ago around when I was eight - and recently rediscovered it while going through my childhood rock collection. The creek I found it in cuts through the Marmaton group. It's about 2 cm at it's widest (marks in mm). I guess my first question is if it's actually a trilobite pygidium and secondly if there's any chance of an identification with as much damage as it's received?

1:

 

2:

 

3:

 

Thanks!

- James

[Titan]

I forgot to add: in picture 3 the view is of the posterior end if it is a pygidium.

[Tidgy's Dad]

Definitely a trilobite pygidium.

Dalmanitid, maybe? 

[Fossildude19]

Looks more like a Calymenid to me.  

[Titan]

@Tidgy's Dad Thanks! I thought it was as well but wanted to make sure I wasn't seeing something not there.

 

@Fossildude19 Thanks Tim, appreciate the input!

[Wrangellian]

Do I need to do it? ......  @piranha

[Titan]

Haha thanks @Wrangellian