Strange Rock with straight lines worn in it

[reptwar1]

Found this near the Arkansas river. Looks almost like someone used it to spool fishing line on. Any ideas?

 

[reptwar1]

I doubt lines like that were created with simple wraps. These would require wearing away... UNLESS that black stuff on there is some sort of clay that is hardened?

SKippy

Heck, I haven't a clue. Kind of does appear to be hardened clay inside the rock though

 

[Charlie P. (NY)]

Wild ass guess - a fossilized scute (from a turtle maybe) still embedded in the rock matrix.

Here's a loose one. Crocodile, armored fish, turtles, etc.

 

[Backwoodsbob]

What does the other side look like

Sent from my SM-G900T using Tapatalk

 

[Back-of-the-boat]

Looking at the pictures magnified it looks like something oil based that has hardened on the underlying stone almost like tar or something like that, possibly an epoxy or resin.See if you can pop a piece off then heat with torch.Give us the results.

 

[Charlie P. (NY)]

Post it on the Fossils sub-forum here and see what they come up with. (Click below)

Fossils

 

[jewelerguy]

looks like a fossil of something. maybe some dinosaur dookie

 

[reptwar1]

looks like a fossil of something. maybe some dinosaur dookie

No, that would be this other one I found lol