Trilobite body part or not?

[strochim]

To trilobite experts:

I found some partial exoskeletons of trilobites at Black Cat mountain in Oklahoma, that after cleaning and prepping, appear to have an appendage attached that kind of looks like a head. But looking at complete trilobites, I don't see this "head" anywhere. I found 3 of them like this.  Photos of two of them are attached. Is this "head" even a part of the trilobite, and if it is, what exactly is it? 

Thanks for any help.

[DPS Ammonite]

Probably a brachiopod.

Edited April 12, 2022 by DPS Ammonite

[oilshale]

Brachiopod seems likely. It could be a colonization of a hard ground (the trilobite remains).
I have too little understanding of trilobites, but could this be a hypostome?

Edited April 12, 2022 by oilshale

[Tidgy's Dad]

Poorly preserved Atrypa oklahomensis, perhaps? 

[Randyw]

LOL! And here i was thinking it was a molt… some trilobites molted by the tail coming loose a few segments seperating and the cheeks and eyes and front seperated from the center of the “ head”…..

[ScottBlooded]

Brachiopods would be my guess