Multiple Concretion fossils I have no Idea what they are!

[Samurai]

Location is in Missouri

The area is dated to the Pennsylvanian 

most likely Raytown, Wyandotte Limestone Formation

 

I have collected a lot of concretions and here are a few of which I have no idea what they could be

My possible hunch is that some of these could be Fossilized Cartilage?

 

 Was really interested in knowing what this one was

[connorp]

These are phosphatic concretions from the Muncie Creek Shale which underlies the Raytown Limestone. I am not extremely familiar with the fossils in them, but you can find a lot of nice threads on them and other similar Pennsylvanian nodules from Texas and Oklahoma. Here is one such informative thread.

 

[Samurai]

17 hours ago, connorp said:

These are phosphatic concretions from the Muncie Creek Shale which underlies the Raytown Limestone. I am not extremely familiar with the fossils in them, but you can find a lot of nice threads on them and other similar Pennsylvanian nodules from Texas and Oklahoma. Here is one such informative thread.

 

Thanks! It is always nice to have answers in some form! This made me better understand more about formations, thank you.

[Petalodus12]

20 hours ago, Samurai said:

Location is in Missouri

The area is dated to the Pennsylvanian 

most likely Raytown, Wyandotte Limestone Formation

 

I have collected a lot of concretions and here are a few of which I have no idea what they could be

My possible hunch is that some of these could be Fossilized Cartilage?

 

 Was really interested in knowing what this one was

The fossil in the 3rd and 4th images looks like it could possibly be cartilage. Not sure about the other ones though