ThePhysicist Posted January 3, 2021 Share Posted January 3, 2021 Hey y'all! Need help with some Permian material. 1. Thought it was Xenacanth shark, but it looks odd to me (~ 3 mm): 2. Think it's a fish spine (~ 3 mm): 3. No idea; a tooth of some kind (~ 1 mm): "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
ThePhysicist Posted January 3, 2021 Author Share Posted January 3, 2021 4. Pathological Labyrinthodont? I think it may have serrations on one carina... so then it wouldn't be. Don't think it's shark because of the way it sits in the bone. (~ 3 mm): "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
ThePhysicist Posted January 3, 2021 Author Share Posted January 3, 2021 5. Sold as Dimetrodon sp., would like for someone to confirm or refute. A pretty rough one, I think I see maybe 3 serrations. Virtually no enamel left (~ 8 mm). All of these from Waurika, OK. "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
JohnJ Posted January 3, 2021 Share Posted January 3, 2021 @dinodigger Chris could shed some light here. 2 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
JohnJ Posted January 10, 2021 Share Posted January 10, 2021 On 1/2/2021 at 10:26 PM, JohnJ said: @dinodigger Chris could shed some light here. You could try sending @dinodigger a PM. Not sure if @jdp can assist.... 2 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
dinodigger Posted January 11, 2021 Share Posted January 11, 2021 Number 5 does have the offset pointed oval cross section with distinct keels, I think it is most likely Ddon, lower anterior post canine. Number 1 is indeed a Xenacanthid tooth tip. Number 3 has a slight chance at being a Diadectid tooth, mebbe incisor. 4 Link to comment Share on other sites More sharing options...
JohnJ Posted January 11, 2021 Share Posted January 11, 2021 Thanks, Chris. @dinodigger The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
dinodigger Posted January 13, 2021 Share Posted January 13, 2021 On 1/10/2021 at 9:37 PM, JohnJ said: Thanks, Chris. @dinodigger You bet! 1 Link to comment Share on other sites More sharing options...
jdp Posted January 13, 2021 Share Posted January 13, 2021 I think all the serrated tooth frags are Orthacanthus but 5 could plausibly be Dimetrodon. 2 is a midline scale from a ray-finned fish. 3 is a weird one; my first thought was diadectid but it's really too small for that; it could belong to a platysomid or cheirolepid fish, perhaps. 3 Link to comment Share on other sites More sharing options...
ThePhysicist Posted January 14, 2021 Author Share Posted January 14, 2021 @dinodigger@jdp, thank you both! I had originally thought 3 could be a posterior Captorhinid, but didn't see any striations... "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
jdp Posted January 14, 2021 Share Posted January 14, 2021 I don't think it's captorhinid. I also don't think it's microsaur. I do think it's fish but, again, couldn't really pin it down on a genus and species for you. 1 Link to comment Share on other sites More sharing options...
jdp Posted January 14, 2021 Share Posted January 14, 2021 By the way, I realize I combined "Mesolepidae" and "Cheirodus" into "Cheirolepidae" which is a totally different group. I did mean Mesolepidae/Amphicentridae, the group of deep-bodied Carboniferous-Permian fishes. 2 Link to comment Share on other sites More sharing options...
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