Weird lower Devonian fossil

[cabes234]

I posted an image of this fossil along with all the others that I found, but that image was of poor quality and as such I think it got lost among all the other fossils I sent yesterday. I have no idea what it is, it might not be a fossil but if it isn’t I really have no idea what it is. It looks to me like the fletchings of an arrow but beyond that I have no clue.

[Fossildude19]

Cropped, rotated, and contrasted.

 

[doushantuo]

it gives off a slightly graptolitic vibe

[Kane]

 Not a graptolite, at all. Given the thickness of the fossil, likely brach or trilobitic fragment.

[doushantuo]

not necessarily agreeing with the "tilobite" 

[westcoast]

This is a difficult one. Not sure this is fossil, could be deformed rip-up mud clast...

[EMP]

I'd say either brachiopod or trilobite fragment, leaning towards trilobite. I don't have a whole lot of experience with Devonian trilobites or the lower Devonian, but what I'm thinking is this is part of the free cheek of a trilobite. In the first photo you can see what looks like a genal spine extending down the side of the fossil. But what I noticed first was the wrinkled-looking part near the top of the specimen, which to me looks like part of a hypostome. 

 

It could also be the hinge of a brachiopod, but to me at least there doesn't appear to be any features like room for a pedicle. A lot of Devonian brachiopods I've collected also have small ornamentation and holes in the interior (I forget the actual term for them), which this doesn't appear to have. 

[jdp]

Need a better pic. Could even be bone.