PetrifiedDoubleGulp Posted August 20, 2016 Share Posted August 20, 2016 Not exactly sure, but this looks like it could be some kind of Trilobite, any thoughts? It's 3" x 2" x 2.5" Link to comment Share on other sites More sharing options...
Kane Posted August 20, 2016 Share Posted August 20, 2016 (edited) Location? Also, not looking like a trilobite to me... :/ Edited August 20, 2016 by Kane ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
PetrifiedDoubleGulp Posted August 20, 2016 Author Share Posted August 20, 2016 Shoal creek, Austin, TX. Yeah, not sure about this thing. It's symmetry is pretty evident. Some kind of horseshoe crab ancestor? A bone? Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 20, 2016 Share Posted August 20, 2016 (edited) Hello, i am not sure you have a trilobite here. Edited August 20, 2016 by fifbrindacier "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
Raptor Lover Posted August 20, 2016 Share Posted August 20, 2016 Yeah same here, doesn't look like a trilobite to me "Or speak to the earth, and let it teach you" Job 12:8 Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 20, 2016 Share Posted August 20, 2016 (edited) Maybe a kind of bivalve, like a shoe clam ? But i am also not sure. Here is a link you could want to visit http://www.northtexasfossils.com/mainstreet.htm Edited August 20, 2016 by fifbrindacier "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
FossilDudeCO Posted August 20, 2016 Share Posted August 20, 2016 (edited) My vote is a steinkern. The internal Mold of a bivalve Edited August 20, 2016 by FossilDudeCO Link to comment Share on other sites More sharing options...
FossilDudeCO Posted August 20, 2016 Share Posted August 20, 2016 When I get home I can show you my 2! Almost identical in appearance and size! Link to comment Share on other sites More sharing options...
Troodon Posted August 20, 2016 Share Posted August 20, 2016 Deer heart clam - artica? Link to comment Share on other sites More sharing options...
JohnJ Posted August 20, 2016 Share Posted August 20, 2016 Definitely the internal mold of a bivalve. They are locally common where you found it. The only possibility of finding a trilobite in Austin rocks would be if someone intentionally, or unintentionally, moved one there. The rocks and formations are too young. 2 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 20, 2016 Share Posted August 20, 2016 (edited) You can also look at this link to a post on the fossil forum http://www.thefossilforum.com/index.php?/topic/27748-west-texas-clam/ It could be an internal cast of isocardia. Edited August 20, 2016 by fifbrindacier "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
PetrifiedDoubleGulp Posted August 20, 2016 Author Share Posted August 20, 2016 I think it looks a lot like a deer heart clam http://txfossils.com/Texasfossilspics/483Deerhearts2.jpg Link to comment Share on other sites More sharing options...
LordTrilobite Posted August 20, 2016 Share Posted August 20, 2016 I agree with the internal mold idea. Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 20, 2016 Share Posted August 20, 2016 Here is another link http://txfossils.com/TFClams.html "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
abyssunder Posted August 20, 2016 Share Posted August 20, 2016 (edited) Definitely bivalve steinkern. Cucculaea, Arctica, etc...Ps : I've never heard of Artica bivalves. I think, on http://txfossils.com/TFClams.html from a long time is mispelled the genus name Arctica Schumacher 1817 (clam). Cyprina Lamarck 1818 [synonym] looks to be invalid name, according to http://fossilworks.org/bridge.pl?a=collectionSearchForm&type=view# Here are some steinkerns of bivalves, from Adaptive morphologies and guild structure in a high-diversity bivalve fauna from an early Campanian rocky shore, Ivö Klack (Sweden) - Anne Mehlin Sørensen et al. https://www.researchgate.net/publication/251530195_Adaptive_morphologies_and_guild_structure_in_a_high-diversity_bivalve_fauna_from_an_early_Campanian_rocky_shore_Ivo_Klack_Sweden Edited August 20, 2016 by abyssunder 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
PetrifiedDoubleGulp Posted August 20, 2016 Author Share Posted August 20, 2016 Thanks for the input! Link to comment Share on other sites More sharing options...
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