Chase Grim became a registered member 7 months, 3 weeks ago7 months, 3 weeks ago7 months, 3 weeks ago
From your photo, it looks like this fossil is inside a rounded stone. And since it was found in a creek, there is no reason to think this fossil is really Ordovician or Silurian. The fact that it was found north-east of Dayton, OH tells me if it were found in the strata, it would probably be Silurian. But the stone could have come from anywhere.
The fossil looks more like a graptolite than a bryozoan to me. But this one is probably not one I can identify.
When looking for fossils in a creek, look in the sides of the creek where you see the stratigraphic layers exposed. These are where the age of the fossils can be determined and where the fossils may be identified to a species and have value to science.
Happy fossil hunting!