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fishguy

Found this on a field trip this fall.  Looking for any suggestions on what it could be. 

20190117_203231.jpg

20190117_203346.jpg

20190117_203319.jpg

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fishguy

The back side there are faint ribbing 

20190117_203332.jpg

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UtahFossilHunter

According to this 

https://s-iihr34.iihr.uiowa.edu/publications/uploads/GSI-088.pdf

there’s lots of brachiopods and echinoderm debris. If it’s either of those yours is pretty worn. The common brachiopods are Orthospirifer iowensis and Schizophoria sp.

Which look like this

 https://goo.gl/images/Y9Q7LH

and this

https://goo.gl/images/wC73Cd

yours looks more like a worn Schizophoria sp. to me but it could totally be something else as I’m no expert on this formation or brachiopods. Maybe @Tidgy's Dad could confirm or deny that.

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KimTexan
34 minutes ago, UtahFossilHunter said:

According to this 

https://s-iihr34.iihr.uiowa.edu/publications/uploads/GSI-088.pdf

there’s lots of brachiopods and echinoderm debris. If it’s either of those yours is pretty worn. The common brachiopods are Orthospirifer iowensis and Schizophoria sp.

Which look like this

 https://goo.gl/images/Y9Q7LH

and this

https://goo.gl/images/wC73Cd

yours looks more like a worn Schizophoria sp. to me but it could totally be something else as I’m no expert on this formation or brachiopods. Maybe @Tidgy's Dad could confirm or deny that.

I think Adam said he was going out of town for a few days and got the impression he wouldn’t be on TFF.

Maybe @Herb or @jdp would have some thoughts.

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jdp

I'm not a brachiopod expert. I can assign them to order but that's about it.

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UtahFossilHunter
6 hours ago, KimTexan said:

I think Adam said he was going out of town for a few days and got the impression he wouldn’t be on TFF.

Maybe @Herb or @jdp would have some thoughts.

Thanks, that’s good to know.

@fishguy I modified your picture to make it a little more detailed.

 

A43612DD-DFB0-462A-AA29-64CF5EDC9409.thumb.jpeg.0ceaa93ebfc8e7d2fee0457e9ec935b4.jpeg

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Al Tahan

It’s distinctly round...kinda has an echinoid look to it

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RJB

Looks like some kind of concretion?

 

RB

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Max-fossils
2 hours ago, RJB said:

Looks like some kind of concretion?

 

RB

I agree with this... I'm not seeing anything that screams out fossil to me :( 

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fifbrindacier

I also agree with concretion, although it looks like a very worn internal mold of something.

 

Here are, for comparison, some of the schizophoriae i've found, they have a very particular shape :

5c42066c2531a_IMG_20180819_175238.jpg.73adc07a619d78981eb6fa4f94eb7f8e1.thumb.jpg.892c6699beed3e23c90fe874eda8ed58.jpg5c4206754a1f0_IMG_20180819_175029.jpg.801c8ec5faf42930c59c6450f527fb061.thumb.jpg.a523099f57fce075236909b8fa0e1a75.jpg5c4206843893c_IMG_20180819_174839.jpg.2f8faae4a289f7517796a92eb35a954c1.thumb.jpg.5b1dc8c95d32f6b555ea09a069b1af7f.jpg

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ynot

+1 for concretion.

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Kato
On 1/17/2019 at 7:45 PM, fishguy said:

Found this on a field trip this fall.  Looking for any suggestions on what it could be. 

20190117_203231.jpg

20190117_203346.jpg

20190117_203319.jpg

I'll throw this out there as a possibility....even though the bottom view does not present itself as such, the top view appears similar to a trace fossil version of Conostichus

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Tidgy's Dad

I suppose it could possibly be the internal mold of a discinoid brachiopod. 

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