Fossilized vertebra?

[Taedra]

Could these be vertebrae or ? Found the one large but several smaller ones as well 

[Taedra]

[Taedra]

[Vieira]

Sorry not a vertebra... In the last picture you have a coral.

[Kane]

Likely a marine hash plate; I see what appears to be a cross section of a rugose coral.

[Taedra]

The coral pic is of a different piece I found. 

Accidentally selected the wrong picture.

 

Thank you  

[Mark Kmiecik]

3 hours ago, Taedra said:

The coral pic is of a different piece I found. 

Accidentally selected the wrong picture.

 

Thank you  

In the first and second photos I can see various marine fossils scattered over the surface of the specimen and no evidence of bone. I believe it is a not vertebra.