Samurai Posted August 7 Share Posted August 7 (edited) Location: Missouri Age: Pennsylvanian Stratigraphy: Dennis formation (Stark Shale Member) Hello! I found this weird probable fin spine and I was wondering if anything was recognizable to anyone. I dont think it is an acanthodian but I am unsure of an ID. It has alot of cartilage. Both halves next to eachother: Digital Microscope images: Other half: Edited August 7 by Samurai 5 Link to comment Share on other sites More sharing options...
ynot Posted August 7 Share Posted August 7 It could be, but unless someone is very familiar with that formation then I doubt it can be IDed. Link to comment Share on other sites More sharing options...
Jaybot Posted August 7 Share Posted August 7 @Missourian @Titan@jdp -Jay “The earth doesn't need new continents, but new men.” ― Jules Verne, Twenty Thousand Leagues Under the Sea Link to comment Share on other sites More sharing options...
Missourian Posted August 8 Share Posted August 8 It is chondrichthyan, but may be difficult to id down further. 1 1 2 Context is critical. Link to comment Share on other sites More sharing options...
jdp Posted August 12 Share Posted August 12 Not a fin spine. This is all cartilage, and fin spines are a mix of dental tissues. Could be a piece of a jaw or gill arch. You would need to prepare it or x-ray this to get a better ID than that, though. 4 Link to comment Share on other sites More sharing options...
Samurai Posted August 12 Author Share Posted August 12 (edited) 8 hours ago, jdp said: Not a fin spine. This is all cartilage, and fin spines are a mix of dental tissues. Could be a piece of a jaw or gill arch. You would need to prepare it or x-ray this to get a better ID than that, though. Ooo ok thank you. I had never heard of a fin spine with only tesselated cartilage being reported in the shale so that makes sense in retrospect. Ill have to make/aquire better tools for prepping sometime. Thank you! Edited August 12 by Samurai Link to comment Share on other sites More sharing options...
hemipristis Posted August 13 Share Posted August 13 nice digital microscope images! 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
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