A unique find, help me identify this possible fossil

[dat.blast]

Hello everyone! I need your help on identifying this piece. This could possibly be a fossil because of the three plant fiber-like impressions on this small sedimentary stone. My sister found it while we were walking on a trail in Wolverine campground park in Genesee County, Michigan. If this is a fossil, then I think that these are fossil impressions of plant material. The geologic strata in Michigan ranges from the Ordovician up to the Pennsylvanian period. I've checked where Genesee county is on the Michigan geologic map, and the bedrock is of Pennsylvanian. Let me know what you think these impressions are from, thanks.      

[Pemphix]

I am not an expert for plants, but my first guess would be "plant material" too.

Let's see what the experts will tell..

 

Best regards,

Pemphix

[Ludwigia]

Looks to me like it could be Calamites.

[Fossildude19]

+1 for Calamites.

[abyssunder]

and another one  for that