Is this a Charlevoix stone or somerhing other coral fossil? Or it is just a stone with cracks?

[augustus]

Today, I explored a ravine， and found some shell fossil and some strange stones. I am living in Sichuan, China.

 

Does anyone can recognize those strange stones（not in the shell picture）？

[Fossildude19]

Welcome to the Forum.

 

First and third are corals.

Second one is a bunch of brachiopod shells.

[Tidgy's Dad]

Nice favositid coral there, I think. 

Good finds and a very warm welcome to TFF from Morocco. 

[augustus]

1 hour ago, Fossildude19 said:

Welcome to the Forum.

 

First and third are corals.

Second one is a bunch of brachiopod shells.

Thank you very much!

52 minutes ago, Tidgy's Dad said:

Nice favositid coral there, I think. 

Good finds and a very warm welcome to TFF from Morocco. 

I am very happy to know the result,  I love this forum. 

[augustus]

59 minutes ago, Tidgy's Dad said:

Nice favositid coral there, I think. 

Good finds and a very warm welcome to TFF from Morocco. 

My friend, do you know what is this?  Its diameter is about 1.5-2 inches.

[Tidgy's Dad]

I can't see terribly well, but to me it looks like a cross section through a solitary rugose 'horn' coral. 

[augustus]

1 hour ago, Tidgy's Dad said:

I can't see terribly well, but to me it looks like a cross section through a solitary rugose 'horn' coral. 

I took two pics of this fossil. Let's see the other one, it has more accurate focusing, and I also used PS to enhance it a bit, you can see the upper arc more clearly.

In addition, I took some pics of the stone I took home today, share them to you and anyone who is interested in it. You can see the layers of this Favosites