ThePhysicist 400 Posted January 3 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): Share this post Link to post Share on other sites
ThePhysicist 400 Posted January 3 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): Share this post Link to post Share on other sites
ThePhysicist 400 Posted January 3 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. Share this post Link to post Share on other sites
JohnJ 4,600 Posted January 3 @dinodigger Chris could shed some light here. Share this post Link to post Share on other sites
JohnJ 4,600 Posted January 10 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.... Share this post Link to post Share on other sites
dinodigger 277 Posted January 11 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. Share this post Link to post Share on other sites
JohnJ 4,600 Posted January 11 Thanks, Chris. @dinodigger Share this post Link to post Share on other sites
dinodigger 277 Posted January 13 On 1/10/2021 at 9:37 PM, JohnJ said: Thanks, Chris. @dinodigger You bet! Share this post Link to post Share on other sites
jdp 747 Posted January 13 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. Share this post Link to post Share on other sites
ThePhysicist 400 Posted January 14 @dinodigger@jdp, thank you both! I had originally thought 3 could be a posterior Captorhinid, but didn't see any striations... Share this post Link to post Share on other sites
jdp 747 Posted January 14 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. Share this post Link to post Share on other sites
jdp 747 Posted January 14 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. Share this post Link to post Share on other sites
