Bryozoan?

[BLT]

I am wondering is this a bryozoan, or something else? There are several of them in this rock. It is from my yard in middle Tennessee. (Mississippian, St. Louis Limestone & Warsaw Limestone)

[ynot]

Bryozoan looks right to me.

[BLT]

Just now, ynot said:

Bryozoan looks right to me.

Great! Thanks! (I actually got it right!) It is  the color and shard-like texture that were making me have doubts about it. 

[Tidgy's Dad]

Yup, bryozoan.

But even better, there's a brachiopod next to it! 

[BLT]

42 minutes ago, Tidgy's Dad said:

Yup, bryozoan.

But even better, there's a brachiopod next to it! 

Lol! It seems like every other rock that I pick up around here has brachiopods in it.

[Tidgy's Dad]

3 minutes ago, BLT said:

Lol! It seems like every other rock that I pick up around here has brachiopods in it.

Lucky, lucky you! 

[Nimravis]

@BLT very pretty pieces- congrats.

[BLT]

18 minutes ago, Nimravis said:

@BLT very pretty pieces- congrats.

Thank you! I’m totally jealous of your most recent finds. I would love to hunt for trilobites there one day soon. 

[Nimravis]

6 minutes ago, BLT said:

Thank you! I’m totally jealous of your most recent finds. I would love to hunt for trilobites there one day soon. 

It is a fun spot and you are guaranteed trilobites.

[BLT]

I posted pictures of a small chunk of this rock a while back. I decided to post pictures of the other two, larger pieces of it today. There are a couple of dark areas that are raised and have a rough texture. What would those areas be?

[BLT]

[BLT]