Coral? Bryozoan?

[Sizev_McJol]

Found these Midwest, likely Iowa, from either Carboniferous or Devonian rocks. Any help in IDing them would be much appreciated. Thanks! 

[Misha]

It would be good to know how many pieces are represented by the photos as it is a bit hard to tell but I see three distinct ones, the first is some kind of Rugose coral, then a bryozoan and finally, what I think is a favosites sp. Coral.

[Sizev_McJol]

6 minutes ago, Misha said:

It would be good to know how many pieces are represented by the photos as it is a bit hard to tell but I see three distinct ones, the first is some kind of Rugose coral, then a bryozoan and finally, what I think is a favosites sp. Coral.

The first photo is one specimen, two and three are another, the fourth is another, the fifth another, and six-nine are one 

[Misha]

1 horn coral 

2-3 bryozoan or favosite impression

4 maybe bryozoan?

5-9 all look like favosites to me

Not sure though

[Tidgy's Dad]

The colonial corals are not favositids, I don't think. 

[Misha]

3 minutes ago, Tidgy's Dad said:

The colonial corals are not favositids, I don't think. 

Some other tabulate corals?

[Tidgy's Dad]

1 hour ago, Misha said:

Some other tabulate corals?

Not sure. 

The first ones corallites are the wrong shape and/ or too widely spaced to be Favosites, the last one has some sort of septa but maybe reduced enough to be some sort of favositid but not Favosites. 

[Rockwood]

1 has to be an odly sectioned rugose horn coral 

2-4 heliolitid coral (tabulate)

5-6 tabulate coral

7-8 favositids ?

9 ? could go tabulate or rugose 

[erose]

No bryozoans there.