paleo.nath Posted March 30, 2021 Share Posted March 30, 2021 I ordered this plate of trilobites a while back and just recently noticed something peculiar on the side of the rock, i’m pretty sure this is not a trilobite but it still looks somewhat organic, but i’ve got nothing. Any ideas! Link to comment Share on other sites More sharing options...
cngodles Posted March 30, 2021 Share Posted March 30, 2021 I don't know enough about the Cambrian, but this looks like an insect wing. Very similar to cicada wings I've seen. The first known insect fossil is from the Devonian period, which was 419-359 million years ago. But, I could be completely wrong and this is some really cool Cambrian fossil. More Reading: https://en.wikipedia.org/wiki/Evolution_of_insects https://en.wikipedia.org/wiki/Rhyniognatha Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
piranha Posted March 30, 2021 Share Posted March 30, 2021 Please show the associated trilobite. 1 Link to comment Share on other sites More sharing options...
paleo.nath Posted March 30, 2021 Author Share Posted March 30, 2021 7 minutes ago, piranha said: Please show the associated trilobite. Looks like a Zacanthoides pygidium Link to comment Share on other sites More sharing options...
paleo.nath Posted March 30, 2021 Author Share Posted March 30, 2021 28 minutes ago, cngodles said: I don't know enough about the Cambrian, but this looks like an insect wing. Very similar to cicada wings I've seen. The first known insect fossil is from the Devonian period, which was 419-359 million years ago. But, I could be completely wrong and this is some really cool Cambrian fossil. More Reading: https://en.wikipedia.org/wiki/Evolution_of_insects https://en.wikipedia.org/wiki/Rhyniognatha It reminded me of the veins in insect wings aswell! Although i’m sure that’s not the case haha Link to comment Share on other sites More sharing options...
piranha Posted March 30, 2021 Share Posted March 30, 2021 6 minutes ago, paleo.nath said: Looks like a Zacanthoides pygidium Always a good idea to include as much info as possible. Then we can avoid useless speculation about Devonian insect wings! Link to comment Share on other sites More sharing options...
DPS Ammonite Posted March 30, 2021 Share Posted March 30, 2021 (edited) There were fish in the Cambrian. Could it be a fish scale? A measurement scale would be handy. @oilshale Compare to: http://www.thefossilforum.com/index.php?/topic/113758-pennsylvanian-black-shale-finds/&do=findComment&comment=1257801 Edited March 30, 2021 by DPS Ammonite My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
piranha Posted March 30, 2021 Share Posted March 30, 2021 Context is everything. Glossopleura has terracing lines on the distal pleurae and the pygidium. Typically found together and significantly larger in size than Zacanthoides. 2 1 Link to comment Share on other sites More sharing options...
paleo.nath Posted March 30, 2021 Author Share Posted March 30, 2021 13 minutes ago, piranha said: Context is everything. Glossopleura has terracing lines on the distal pleurae and the pygidium. Typically found together and significantly larger in size than Zacanthoides. Ohhhh okay that makes sense! Thank you very much Link to comment Share on other sites More sharing options...
cngodles Posted March 30, 2021 Share Posted March 30, 2021 11 hours ago, piranha said: useless Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
piranha Posted March 30, 2021 Share Posted March 30, 2021 3 hours ago, cngodles said: My comment was not directed at you. It was intended to point out the necessity to include as much detailed info as possible when posting. Otherwise we are all on a wild goose chase ... shortly after your post, a fish scale was suggested! Link to comment Share on other sites More sharing options...
cngodles Posted March 30, 2021 Share Posted March 30, 2021 6 hours ago, piranha said: My comment I figured as much. Honestly I don’t like to question someone who includes a geologic age with a post, but it really looked insect-like. Bravo to your identification, clearly from a great store of information. Fossils of Parks Township - Research | Catalog | How-to Make High-Contrast Photos Link to comment Share on other sites More sharing options...
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