Fish bone or something else? (Missouri)

[Samurai]

Location: Missouri

Time period: Pennsylvanian

Formation: Muncie Creek Shale

At first i wanted to say some sort of skull material but I am unsure as I do not see many visible bony structures and I am inexperienced in such fields

 

 

 

 

Here are the image links in larger file sizes and if you are on pc you can zoom into them and see hopefully better detail

https://postimg.cc/GTvr5dD6

 

https://postimg.cc/sMTz8nBf

 

https://postimg.cc/cK6WNQYR