Burrows /Root System ?

This is a smaller fossil of the same type that I posted awhile ago for help in an ID it is narrowed down to possibly being Burrows of Trilobites,Clams,Decapods,Soft bodied worms,Primitive fish burrow,Root system ,or an Orthocerid .

Thanks again everyone that helped .

Age Devonian

Found at Hungry Hollow on the underside of the Hungry Hollow member .