What are these??

[tiggerd100]

Found these in Southeast Kansas limestone.

 

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[StoneHunter]

They might be brachiopods? Very sweet finds!

 

[Charlie P. (NY)]

Scutes?

 

[Raider19962]

Some forerunner of a scallop, sorta.

 

[Lygore]

Maybe something close to a strophomena (Ordovician brachiopod),
But scutes do look more like that.

 

[Gaspipe]

Brachiopod

 

[A2coins]

Now those are pretty cool