connorp Posted June 7, 2022 Share Posted June 7, 2022 I collected this trilobite pygidium in the Galena Group (Upper Ordovician) of Illinois. I don't immediately recognize it, especially since it is just a mold. It is fairly large. My best guess is Isotelus but I was hoping one of the trilobite experts here might have a better idea. Thanks for any help. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 7, 2022 Share Posted June 7, 2022 @Kane @piranha 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...
NoahW24 Posted February 2, 2023 Share Posted February 2, 2023 (edited) Could also be an Illaenid perhaps? https://myweb.uiowa.edu/jadrain/resources/Carluccietal2012.pdf Edited February 2, 2023 by NoahW24 Link to comment Share on other sites More sharing options...
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