Bonehunter Posted March 2, 2021 Share Posted March 2, 2021 Hi all! I have been using my new scope and camera to get some better photographs of conodonts I've recently found in nodules in Pennsylvanian Stark shale between Winterset and Bethany Falls limestone. I have found 4 of these 500-700micron, tooth-like structures-I destroyed several inadvertently removing the "carbonized film". Two of the 3 most recent are not connected to anything, but have a broad base. In the 3rd photo, you can see what appears to be a joint where the "tooth" connects. I am waiting on finer needles to clean this one. Though I call them "teeth", I don't really think they are-they are not conodonts that I can tell, and in a couple nodules, there are other "carbonized" pieces present (you can see portions in photo two). I think these are really cool!!! If anyone has even a thought about what they could be, I'd appreciate it, as always!! Bone Link to comment Share on other sites More sharing options...
connorp Posted March 2, 2021 Share Posted March 2, 2021 At least the second looks more like a dermal denticle, maybe from a holocephalan. Here is a sketch of some dermal denticles from Helodus. I will tag @jdp for his thoughts. Source: Patterson, C. (1965B). "The phylogeny of the chimaeroids." 2 1 Link to comment Share on other sites More sharing options...
Bonehunter Posted March 2, 2021 Author Share Posted March 2, 2021 WOW- very, very cool!!!!!!....I found an Iniopterygian a couple months ago, and now these!!!- Thank you so much!-in reviewing the literature and on-line info, it also gives me a thought on another item I've found but not photographed that appears to be a tooth from a similar/identical animal- I need to clean it out of the shale and I will post it!! Link to comment Share on other sites More sharing options...
Al Dente Posted March 2, 2021 Share Posted March 2, 2021 I think these might be scolecodonts. 1 Link to comment Share on other sites More sharing options...
Bonehunter Posted March 2, 2021 Author Share Posted March 2, 2021 EVEN COOLER!!!!!!!!! I will upload more photos once I clean the other (pic #3 is covered in a thin, loose matrix towards 6:00-9:00 or so best I can tell-its more than just the "tooth"/chelicerae" How am I going to differentiate?/confirm?........... Thanks!!!! Bone 3 hours ago, Al Dente said: I think these might be scolecodonts. Link to comment Share on other sites More sharing options...
jdp Posted March 2, 2021 Share Posted March 2, 2021 5 hours ago, Al Dente said: I think these might be scolecodonts. This was my thought here as well. 1 Link to comment Share on other sites More sharing options...
FossilDAWG Posted March 2, 2021 Share Posted March 2, 2021 I'm in agreement with scolecodonts. Don 1 Link to comment Share on other sites More sharing options...
Bonehunter Posted March 2, 2021 Author Share Posted March 2, 2021 1 hour ago, FossilDAWG said: I'm in agreement with scolecodonts. Don Thanks!!!- I've found a few references depicting some or most of the structures, but is there a "best" source for depicting these? I see they have a long history as well- anyone have thoughts on some "Family" I can attempt to place them in? I know its a stretch with just these photos, but any direction appreciated!!!!! Bone Link to comment Share on other sites More sharing options...
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