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Found 17 results

  1. Opabinia Blues

    Permian Pelycosaur Appendicular Bone

    Here’s a pelycosaur appendicular bone I acquired from a vendor well-acquainted with Permian material a while back. It was sold to me only as Dimetrodon limbatus from the Archer City Formation in Texas. Thing is, I’ve never been able to place exactly what bone it is, and it doesn’t seem to match any appendicular elements of Dimetrodon which I could find references for. Here’s to the hope that there’s somebody here well-acquainted with this material who can put me on the right track!
  2. ThePhysicist

    Dimetrodon Tooth

    Identification: This tooth was found in processed microfossil matrix from Waurika, OK, USA. Reptile remains in general are very uncommon, so if you think you've found many pieces of Dimetrodon teeth, you're likely mistaking many Orthacanth shark cusps. Orthacanth shark enamel is smooth, and the serrations are quite prominent compared to those on Dimetrodon which are finer. Dimetrodon enamel is not smooth, as seen on this one. Dimetrodon crowns are also broader. Shark cusps broken at the foot of the crown also flare out, where reptile teeth do not. Were this crown complete, you would also notice a conical/round depression in the base. This is unlikely to be from another Sphenacodontid based on the locality, presence of serrations, and enamel ornamentation. https://www.nature.com/articles/ncomms4269 Notes: This tooth is a post-canine/posterior tooth, which is the tooth position one is more likely to find in micromatrix since they are smaller.
  3. Le Quoc

    Pelycosaur material need help

    I got these material from one seller. The information that I have is these all come from Oklahoma, USA. I have separate and glue some. I put them in 2 group that which have spike and which doesn’t have. It very pleasure that you could help me to ID them! Thanks! First group Second group
  4. ThePhysicist

    Dimetrodon tooth

    From the album: Permian

    Dimetrodon sp. Wellington/Ryan Fm., Waurika, OK, USA Post-canine/posterior tooth This tooth is likely from D. limbatus, given the locality and presence of serrations: https://www.nature.com/articles/ncomms4269 The same paper also rules out other serrated Sphenacodonts by the enamel ornamentation. Its smaller size could indicate that it's from a juvenile. It differs from the comparatively abundant broken Orthacanth shark tooth cusps in the microfossil matrix (what most people are likely to confuse with): the enamel texture is not smooth, the crown is very broad (indicating it's likely a posterior, in addition to its size), it has fine serrations that differ in shape from the sharks', and the base doesn't flare out. Were this crown complete, you'd also notice a conical/rounded depression in the base. A beautiful tooth from one of our surprisingly close cousins.
  5. Still_human

    2 dimetrodon vertebrae & basioccipital

    From the album: Permian era fossils

    Basioccipital about .5" large vertebra about 3" small vertebra about 1.5" *more info to be posted
  6. I can't find any pictures that focus on Edaphosaurus claws, and I can't zoom in enough on pictures to get a clear visual of any claws, so I can't see any differences between Dimetrodon and Edaphosaurus claws are. They're both really small compared to the bodies, so it's hard to see from full body/skeleton pictures, and they wouldn't be from enough angles to be sure. Someone who has dealt with lots of them, including on articulated specimens, has said that they're almost the same, and as far as he knows, but isn't 100% sure about it, the biggest difference, the only one he is aware of, is that Dimetrodon claws are curved on the bottom, like raptor/general theropod claws, while Edaphosaurus claws, equally sharp, are mostly flat on the bottom, like spino toe claws. Is that the case? Does anyone happen to know?
  7. Still_human

    Dimetrodon sail spine pieces

    From the album: Permian era fossils

    Very small fragments of dimetrodons sail spines. From the lower Permian Texas Red Beds, Archer city formation in Archer county
  8. Still_human

    Edaphosaurus with large predator bite

    From the album: Permian era fossils

    Yet unidentified Edaphosaurus pogonias bone from the Permian era Red Beds site in North Texas, with large unhealed tooth hole from what appears to be a large Dimetrodon's bite, from either the fatal attack, or post-death predation mark.
  9. From the album: Permian era fossils

    Reverse side of the unidentified Edaphosaurus pogonias bone with an apparent Dimetrodon tooth hole.
  10. Hey everyone, this is for anything Sphenacodont--dimetrodon, or otherwise. Collections/pictures/discussions/whatever. This is the splinter thread off of the sphenacodont collections thread, so if anyone would like to bring over anything from the other thread, please feel free. I'm going to bring over some interesting posted info that covered different topics, and with links to interesting and useful info. *some discussions covering other things and animals in relation to sphenacodonts is perfectly fine. For instance, spinosaurus, Permian topics, apex predators, or whatever. As long as it has some relation. Side-tracking is fine, just bring it back home before too long, please. Here's a link to the previous thread. It would be greatly appreciated if you post pictures of any dimetrodon/sphenacodont fossil material you have:)
  11. dinodigger

    Secodontosaurus

    Hey gang here's an awesome secodontosaurus vertebra. These guys are awesome slender finbacks. Also known as the fox faced finback.
  12. dinodigger

    Bonnie the Dimetrodon

    Hey gang here is a quick shot of a good day- finally getting Bonnie the Dimetrodon out of the quarry and into the museum. 8 months of digging and preparing for this big move. The weight is right at 6000 pounds. Next stage is getting her opened up and prepped. In the quarry we have 2 more skeletons to start on. Dang I love the Permian.
  13. dinodigger

    Dimetrodon canine

    Hey gang just posting a quick shot of an absolute monster maxillary fang from a very big Dimetrodon. Quarry has been yielded some incredible material. Removing a 10k pound block this weekend with a very nice skeleton. Will have some photos soon.
  14. dinodigger

    Dimetrodon fang

    Hey gang, quick post from the field. currently working on a few complete dimetrodon skeletons and found this beautiful pre canine. shed tooth with very nice serrations, growth rings, and feeding wear. he did some chewing...
  15. dinodigger

    Dimetrodon skeleton

    Hey gang here is a glimpse of.one of the skeletons. Great articulation. back at it this morning.
  16. dinodigger

    Dimetrodon radius

    Hey gang here is a lovely dimetrodon radius- just finished prepping. doesn't go to the articulated guys but wI'll go.to another skeletonote that we found pretty close to it.
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