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Showing results for tags 'ryan formation'.
Found 16 results
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Hello! I've recently been sorting through some Waurika, Oklahoma Permian microfossil matrix, and I've been able to identify most of my finds (As a beginner in the Permian field, @ThePhysicist's Permian album really helped me) but some I haven't been able to pin down yet. I'd really appreciate some ID assistance! Let me know if you need better photos, my photo-taking ability is, alas, subpar. 1. Trimerorhachis jaw perhaps? Or fish? I've heard distinguishing between the two is quite difficult. ~2 mm. 2. A really strange texture, I was hoping it might be diagnostic. The other side is relatively featureless. ~3 mm 3. Another weird looking jaw. It looks fishy, maybe. (I included both sides) ~2mm 4. This also had a bizarre texture. A fish mouth plate? A bit bigger, ~5mm 5. I thought it might be an Eryops tooth but I wasn't certain. It has those kind of crenulations. ~4mm 6. Maybe a worn part of an orthacanth tooth? A really weird texture, almost perforated. ~3 mm 7. A really small possible claw? ~1.5 mm 8. Another possible jawbone? ~1.5 mm 9. I had my fingers crossed for Dimetrodon on this piece of enamel but I'm skeptical. It is pretty big though, (in microfossil terms, at least) almost 6mm. 10. Another possible Dimetrodon candidate? I'm doubtful for this one too. A touch over 3mm. Front: Serrations: The base: 11. Looks like a claw, but it could be a really worn piece of bone. ~2mm That's all, thanks so much!!
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Hello, Could I get an ID for this little premaxillary/nasal jaw piece? It's from the Permian-aged Ryan Formation near Waurika, Oklahoma, USA. It measures a little over 1 cm including the tooth, and seems to be from the right maxilla. I believe it contains the anterior border of the nasal opening. The seller says it could be from a Secodontasaurus or undescribed reptile.
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Hello, Could I get an ID on this piece? Permian-aged from the Ryan Formation near Waruika, Oklahoma. It's labeled as a reptile jaw piece. Has three teeth that are laterally compressed and somewhat twisted with serrations (Apparently there are serrations only on one side of the teeth). I wonder if it's shark and not reptile at all. Pathological shark tooth perhaps? Size is a little over 1cm. @jdp
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From the album: Permian
^ Maho & Reisz (2022) -
From the album: Permian
Dimetrodon spines have a unique shape: ^ Brink et al. (2019) Many bones in the matrix I have appear to have bite marks - parallel grooves in bone. My amateur guess is that these are scavenging marks from a Dimetrodon carcass that got washed into a river and got chomped by Xenacanthid sharks (there certainly are other possibilities).-
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- early permian
- microfossil
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From the album: Permian
A freshwater cartilaginous fish with crushing teeth. -
From the album: Permian
The "sharks" that swam the rivers and lakes of the Early Permian wouldn't be fun to pet! -
From the album: Permian
I'm convinced it's a tooth, but not sure what kind. More images here. -
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.
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- dimetrodon
- dimetrodon limbatus
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From the album: Permian
Now how can this crumb of a tooth be attributed to Dimetrodon?? First, it's serrated. It could be shark? The enamel is not smooth (not very visible in this image, a little at the bottom), so no (additionally, the serration shape is different from those of Orthacanth sharks). That narrows it down to serrated Synapsids. It turns out that very few animals at this time and location had "true" serrations, not just enamel serrations, but bumps in the dentine beneath the enamel. The enamel on this piece happens to still be clear, allowing one to see the globular dentine underneath! From Brink and Reisz (2014), I'd posit that D. grandis is a suitable candidate. I'm also not an expert, so I welcome contrarian arguments. I highly doubt it's Therapsid, as I haven't heard of any from the Waurika locality. D. grandis:-
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- dimetrodon
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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. -
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):
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Hi. Found this tooth in Ryan formation matrix from Waurika OK. I found this tooth that looks to me to be from a shark, but does not match any teeth from this locality. It is about 3MM. Is it a shark tooth or something else. Any thoughts on this would be greatly appreciated!
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I’ve just found this tooth in some Permian micro matrix from the Wellington formation, it is serrated and around a centimeter long. I’m thinking It’s dimetrodon or some sort of other basal synapsid
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I’m sorting through some micro-matrix that is said to be from the “Ryan Formation” however I’m pretty sure that’s just the Wellington formation. I’m looking for some sort of ID on this, It’s about a half centimeter long. My apologies for the poor photo quality, It’s just so tiny and my equipment isn’t good enough
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Dimetrodon tooth?
thelivingdead531 posted a topic in Is It Real? How to Recognize Fossil Fabrications
I’ve been trying to research and go through previous posts all morning, but I still need help. Can this be confirmed as a Dimetrodon tooth or just as Sphenacodontidae? The seller states that it’s from the Ryan formation and found near Waurika, Oklahoma. It appears to be around 1/4 inch long. I know the photos aren’t the best, but all of the sellers photos are pretty terrible. I can definitely see serrations on the tooth. If anyone can help shed some light on this for me I would appreciate it. I know @Bobby Rico has a slight obsession with Dimetrodons, so maybe he can weigh in.
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