Another interesting find by a newbie

[JoyceW]

I found this one yesterday. I recently got back into the hobby of rock tumbling and was looking for rocks for that when I came across a few fossils in a creek bed in North Central Arkansas, USA. This one resembles a "pigs in a blanket" sausage wrapped with crescent dough. I thought the inside was just dirt and mud but it is solid. It is 2 inches at the longest point. The hole is approximately an inch in diameter.

[Rockwood]

Rhizolith ?