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KCMOfossil

Pennsylvanian Foraminifera?

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KCMOfossil

I have found quite a number of these ranging from 1-4 mm or so.  They are from the Kansas City Group of the Pennsylvanian Subsystem.  I don't know the name of the strata, but for the locals, these come from the road cut about 1/4 mile west of I-49 on Route 150 near Belton, MO.  I have found them in large (three to six inch) nodules.  I will appreciate any help you can give me with identification? 

 

Russ

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BobWill

It looks like a brachiopod to me. Most everything starts out pretty small so at some point they may have been about the size of a foram.

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KCMOfossil

Thanks, BobWill.  I too thought it looked just like a miniature brachiopod.  My confusion came from the resource I use which said the smallest brachiopods from my area are .25 inch.  So, I thought perhaps it was a foram.  As you said, however, most everything starts small. 

 

Russ

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westcoast

Agree with Brachiopod.

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fifbrindacier

I also agree with that identification.

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Missourian

Those probably are Crurithyris. The beds are the Argentine Limestone.

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abyssunder

BobWill was right, also Missourian. Foraminiferans don't have this kind of morphology.

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