Samurai Posted July 22, 2020 Share Posted July 22, 2020 Location is in Missouri The area is dated to the Pennsylvanian Formation: Muncie Creek Shale I was cracking Phosphatic concretions and this baby popped out! I was excited and thought I should share and ask what it is! I believe it is a cartilaginous fish spine, but I have little knowledge in such topics. Ps Information on good glue to glue together the cracked piece is welcomed! Link to comment Share on other sites More sharing options...
Darbi Posted July 23, 2020 Share Posted July 23, 2020 @Samurai, I can see why you think it's a fish spine. I wonder if it's a hybodont shark spine, but I'm not that familiar to fossils in Missouri. It's a very interesting find, hopefully others will help you soon! Link to comment Share on other sites More sharing options...
Samurai Posted July 31, 2020 Author Share Posted July 31, 2020 Thanks for the guess! I recently decided to re investigate this a little and I have two guesses, I think it could also be a metapterygial axis belonging to a species from the order Symmoriida or I think it could also be from a species belonging to the order Iniopterygiformes, however this Specimen would be larger than average, and I could not find info if they exist in Missouri or not. I will note there has been a braincast of a small species from the Iniopterygiformes being found in Kansas PS: I don't think it is a spine anymore since it is lacking the signature spikes of spines, or the line patterns seen in some of the images I googled, and I also noticed that there is some tessellated calcified cartilage on the fossil which indicates it is most likely not a spine. 1 Link to comment Share on other sites More sharing options...
MrBones Posted August 2, 2020 Share Posted August 2, 2020 No idea what this is, but I know that paraloid b72 is a good adhesive/pretective coating for many fossils. You can have a look around on the forum to get some tips on how to use it. Link to comment Share on other sites More sharing options...
Samurai Posted August 2, 2020 Author Share Posted August 2, 2020 1 hour ago, MrBones said: No idea what this is, but I know that paraloid b72 is a good adhesive/protective coating for many fossils. You can have a look around on the forum to get some tips on how to use it. Thank you! I have barely touched the fossil since, due to fearing it might degrade I will have to order some 1 Link to comment Share on other sites More sharing options...
Samurai Posted January 25, 2021 Author Share Posted January 25, 2021 Hello! its been a few months and I thought I might as well and upload some more pictures I was able to take of this concretion fossil as it remains unidentified. I will most likely add more Pictures to this post if possible as my phone has trouble focusing. I am still confident in saying this is not a fossilized fish spine or anything else I mentioned above. I realized my brain truly ran wild on my previous assumptions. Natural/larger File size: https://imgur.com/a/jK8z5jj 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 25, 2021 Share Posted January 25, 2021 @jdp @Petalodus12 @Missourian 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...
jdp Posted January 25, 2021 Share Posted January 25, 2021 I think I prefer an interpretation of this being a piece of the splanchnocranium, maybe a palatoquadrate or hyomandibula. 4 Link to comment Share on other sites More sharing options...
jdp Posted January 25, 2021 Share Posted January 25, 2021 To specify, this would be a piece of the splanchnocranium (jaws and branchial arches) of a chondrichthyan of some sort. 3 Link to comment Share on other sites More sharing options...
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