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ThePhysicist

Permian fossils

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ThePhysicist

Hey y'all! Need help with some Permian material. :headscratch:

 

1. Thought it was Xenacanth shark, but it looks odd to me (~ 3 mm):

 

IMG_0808.thumb.jpeg.fb3b24b70596dab7229774e1e2b076ed.jpeg

IMG_0807.thumb.jpeg.bb8b3b49edc882008ee24b2baf76f430.jpeg

IMG_0806.thumb.jpeg.dea1a5fb3bedb6a9889c2fd09bb3f696.jpeg

IMG_0805.thumb.jpeg.351ab175b32924bd9f64ac430cf4cc8d.jpeg

 

2. Think it's a fish spine (~ 3 mm):

 

IMG_0812.thumb.jpeg.3a7c8aa01960a66f9255abd63e3b61ec.jpeg

IMG_0813.thumb.jpeg.3c8b6188ccbe35e66880a41b76289aa6.jpeg

IMG_0814.thumb.jpeg.b094bc7fbd2d6bb6935ee1b4317aba46.jpeg

 

3. No idea; a tooth of some kind (~ 1 mm):

 

IMG_0809.thumb.jpeg.02616203f248a6f1a5f597b3f8060748.jpeg

IMG_0811.thumb.jpeg.28c68a6b7e72f5b20dab6b042ed9f52e.jpeg

IMG_0810.thumb.jpeg.c4d212594d3309036092fffeb14fd00f.jpeg

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ThePhysicist

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):

 

IMG_0816.thumb.jpeg.3e80970bec32057bfe029caf893733a5.jpeg

IMG_0815.thumb.jpeg.37cb07485b4f16eec2689bfa10c7cea3.jpeg

IMG_0817.thumb.jpeg.1d2af0b202b345d2cbf1211781b9fa40.jpeg

IMG_0818.thumb.jpeg.2b56ebcdce448d5b4153121cec8d1771.jpeg

 

 

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ThePhysicist

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).

 

 

IMG_0819.thumb.jpeg.72b5c7fa3c468f5eb7de1e9f0530cd6a.jpeg

IMG_0821.thumb.jpeg.19d6f6801b956cba3277dc087036d690.jpeg

IMG_0820.thumb.jpeg.2b5203d12a9ab6dbf0dc542a7e785425.jpeg

IMG_0822.thumb.jpeg.63911992038efaf2bf5cff5658106335.jpeg

 

All of these from Waurika, OK.

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JohnJ

@dinodigger Chris could shed some light here.  :)

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JohnJ
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....

 

 

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JohnJ

Thanks, Chris.  ;)  

@dinodigger

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dinodigger
On 1/10/2021 at 9:37 PM, JohnJ said:

Thanks, Chris.  ;)  

@dinodigger

You bet!

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jdp

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.

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ThePhysicist

@dinodigger@jdp, thank you both! I had originally thought 3 could be a posterior Captorhinid, but didn't see any striations...

 

captojaw1b.jpeg.51f5be5cf7f7e01baeb97e6ae5f86263.jpeg

Left-Dentary-and-Dentition-of-Captorhinus-aguti-A-Scanning-electron-microscope.png.17931b9ae2de4a976fa11d18dec852f6.png

Comparison-of-the-dentition-in-the-mid-dentary-region-of-various-members-of-the-genus.png.6090304acd7db9ed4db71d18da3bab59.png

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jdp

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.

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jdp

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.

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