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Penn Dixie Fossil Identification Request


BLT

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While cleaning the brachiopods which I found on my recent trip to Penn Dixie, I noticed something that I cannot identify. I initially thought it was a shell fragment due to the white color. Upon closer inspection, I thought it might be a bryozoan? Now I’m wondering if it could be a tiny crab? 

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Eldredgeops cephalon, I'm pretty sure. The eye is off to the right. 

 

 

59DF7ABB-3213-4FBA-A619-4188DD9CCB88.thumb.jpeg.e97783fb44554ffce91e3905117ace83.jpeg

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1 hour ago, Fossildude19 said:

Eldredgeops cephalon, I'm pretty sure. The eye is off to the right. 

59DF7ABB-3213-4FBA-A619-4188DD9CCB88.thumb.jpeg.e97783fb44554ffce91e3905117ace83.jpeg

Ah, gotcha. The color was throwing me off. :unsure: 

Thanks! 

:)

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1 hour ago, BLT said:

Ah, gotcha. The color was throwing me off. :unsure: 

Thanks! 

:)

 

I found this Eldredgeops rana about  6 miles away at a different site.  ;) 

 

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17 minutes ago, Fossildude19 said:

 

I found this Eldredgeops rana about  6 miles away at a different site.  ;) 

 

large.DSCN5279.JPG.9728b2513e2d3ca285fe66cfc7ec1866.JPG

I was under the false assumption that all trilobites from that general area were black. :DOH: What causes the color variations?

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It depends on the mineral availability at the time of their deposition and fossilization, although in some uncommon cases it can be on account of chromatophores. 

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2 minutes ago, Kane said:

It depends on the mineral availability at the time of their deposition and fossilization, although in some uncommon cases it can be on account of chromatophores. 

Gotcha. Thank you! :)

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They can be brown, too. :) 

 

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Here is another whitish trilobite I found in one of my Penn Dixie rocks. I’m wondering why it turned dark (and remained so when dried) after cleaning it? 

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02B2B31A-8ED4-46F3-8448-F509A6D5B99E.jpeg

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Likely it was just a mineral staining/coating. 

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...How to Philosophize with a Hammer

 

 

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