Help identifying possible corals and another thing.

[Sandfossil]

Found this broken piece first.

 

 

 

I initially thought this one to be wood. But after looking at the first one I found them to be similar in the pattern just different material.

 

I think I have one similar to this one that is a favosite?

Found these in different areas on the ground in Muskogee County north of Webber Falls, Ok close to the Arkansas River.  I believe it to be Middle Pennsylvanian, Atoka formation.

I found several odd things but wanted to start with these. I am thinking 1-3 are some type of corals. And 4 I have no idea it was the last one I picked up for the day. Thank you for any help.

Cyndi

[Kane]

Photo #1 looks to be stylolites.