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autobots

Unknown fossil found in Eastern Idaho

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autobots

Good Evening!

 

Would anyone by chance know how to identify this fossil?  I found it interesting because of the "branches" coming out in a circular pattern.  And at the center it appears to have some form of crystal that developed.  The location of this fossil is Island Park, Eastern Idaho, in a boulder field on the south eastern side of the base of Mount Jefferson.  If you have any questions or need more information, please let me know

 

Any comments are greatly appreciated, thank you!

DSC_5664.JPG

Edited by autobots

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WhodamanHD

Weird piece, looking at a geologic map, I think the sediment is tertiary, but you should take a look as well. The center has crystals growing in it as most hollow stone spaces will, but the pattern is strange, I'm gonna guess either plant matter, or mineral psuedofossil. Others may have better ideas.

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ynot

Welcome to TFF!

I think it is a crinoid calyx and arms. (sorry but I do not know the proper termination.)

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Fossildude19

I agree, crinoid .

Can we see a picture of the other side?

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westcoast

It does appear to be an extraordinarily preserved crinoid. Although slightly out of focus I believe I can see pinnules preserved along some of the arms. A view of the other side would be useful.

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Ludwigia

Definitely crinoid. Question is which? It looks to me like a bit of work with the air abrader could bring out more detail and even perhaps a nice display piece.

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Gen. et sp. indet.

I diagree. For me, more like a cross section through a sponge (most likely), coral, or algae.

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FossilDAWG

I agree with the crinoid ID.  You can see that the arms are made of ossicles, and the arm in the 5:00 position shows clear pinnules.

 

 

Don

 

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RJB

Looks like some kid had fun with a black marker.  :)

 

RB

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crabfossilsteve

Cool piece.  I agree that it is a cross section thru a crinoid.  A number of the arms show pinnules.

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