[BETTER PICTURES] iowa fossil id help

[Daisbea]

All found around coralville lake in iowa!

tried getting better photos. Any help would be appreciated! I have so many more but these are the ones im the most confused on!

tried my best to crop!

 

 

Edited July 4, 2023 by Daisbea

[Andúril Flame of the West]

Nice finds! To my eye the first three specimens appear to be rugose corals.

 

For future reference it would be helpful if you

numbered the specimens. It would make them easier to reference individually in the comments and would lessen potential confusion as to what photographs pertain to which specimens. 

[Ludwigia]

The last one appears to show dendrites around a mineral cavity.

[minnbuckeye]

Most specimens shown are rugosa coral typical of  the local Devonian of the area. The first is a cross section through one. The second is a typical rugosa found in recently exposed rocks. The third is a water or weather worn rugosa, very typical of those found on the lake shore.