Pseudogygites Posted May 27, 2018 Share Posted May 27, 2018 I found this fossil a few days ago at an exposure of the Billings Shale. It was found associated with Triarthrus glabellas and brachiopods. It's structure leads me to believe that it's either an Isotelus pygidium or an agnostid, although I do not know of any agnostics described in this formation and age. Link to comment Share on other sites More sharing options...
Innocentx Posted May 27, 2018 Share Posted May 27, 2018 It looks like the Cambrian Rhastagnostus but of course wrong time period. Though I didn't find your guy here, this is a fun resource: https://www.amnh.org/our-research/paleontology/paleontology-faq/trilobite-website/gallery-of-trilobites/ordovician-period-trilobites "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 27, 2018 Share Posted May 27, 2018 What is the size of this, please? Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 27, 2018 Share Posted May 27, 2018 This actually looks like a disarticulated/broken Triarthrus trilobite cephalon, to me. 1 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...
Pseudogygites Posted May 27, 2018 Author Share Posted May 27, 2018 11 minutes ago, Fossildude19 said: This actually looks like a disarticulated/broken Triarthrus trilobite cephalon, to me. One park of it does look like a Triarthrus glabella. Could the larger flat plate beside it be the ventral side of the cephalon? Thanks for the info! Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 27, 2018 Share Posted May 27, 2018 It could be. Not sure, ... maybe @piranhacan make sense of it. 1 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...
Innocentx Posted May 28, 2018 Share Posted May 28, 2018 14 hours ago, Fossildude19 said: This actually looks like a disarticulated/broken Triarthrus trilobite cephalon, to me. I see what you're saying, especially in the top photo. The right side is intact and the left side is gone. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
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