Kansas Shark Vertebrae/cartilage disk?

[SomethingIsFishy]

I have recently found this fossil in north western Kansas (graham co.) I don't know if this is a shark vertebrae/cartilage disk or just a basic fish vertebrae. (Don't mind my bad prep work. I just started peeping fossils recently.)

[SomethingIsFishy]

Can anyone tell if this is a shark vertebrae/cartilage disk or if is is just a basic bony fish vertebrae.

[Harry Pristis]

Shark.

 

[SomethingIsFishy]

Thanks! That's what I thought it was but I just wanted to be sure.