autobots Posted July 10, 2017 Share Posted July 10, 2017 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! Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 10, 2017 Share Posted July 10, 2017 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. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
ynot Posted July 10, 2017 Share Posted July 10, 2017 Welcome to TFF! I think it is a crinoid calyx and arms. (sorry but I do not know the proper termination.) Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 10, 2017 Share Posted July 10, 2017 I agree, crinoid . Can we see a picture of the other side? Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
westcoast Posted July 10, 2017 Share Posted July 10, 2017 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. Link to comment Share on other sites More sharing options...
Ludwigia Posted July 10, 2017 Share Posted July 10, 2017 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. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted July 10, 2017 Share Posted July 10, 2017 I diagree. For me, more like a cross section through a sponge (most likely), coral, or algae. Link to comment Share on other sites More sharing options...
FossilDAWG Posted July 10, 2017 Share Posted July 10, 2017 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 Link to comment Share on other sites More sharing options...
RJB Posted July 10, 2017 Share Posted July 10, 2017 Looks like some kid had fun with a black marker. RB Link to comment Share on other sites More sharing options...
crabfossilsteve Posted July 10, 2017 Share Posted July 10, 2017 Cool piece. I agree that it is a cross section thru a crinoid. A number of the arms show pinnules. Link to comment Share on other sites More sharing options...
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