Devonian Trace Fossil ID, Possible Trilo Tracks

[Pesmerga]

 Can anyone with Devonian expertise chime in? I acquired this from sylvania shale. The fossil is about 4.5 cm in length total, and the tiny markings each measure anywhere from 1-2 mm. The markings vary in closeness and wideness.

 

First thought was a trilo trail.

[Kane]

Interesting find. These look like graptolites to me.

[Beth929]

Maybe c in this graph.

 

link

[Pesmerga]

It looks very similar to Glyptograptus. Thank you for the ID help. 

[JohnBrewer]

Nice find and welcome to the forum

[Pesmerga]

 thank you!