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Showing results for tags 'waurika'.
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From the album: Permian
Early reptile tooth. Prominent ridges on the distal face. Height: 3.5 mm -
Looking to get some second opinions on some Permian stuff that I found a few weeks ago. Jefferson county, Waurika Oklahoma. You’ll have to ignore the paint on my hands, I’d been doing some painting prior to these photos. didn’t have a small enough ruler nor a printer, so I just made a small measurement reference. 4x 1/4 inch segments on paper. Claw 1 Most of the claws I’ve found are Trimerorhachis, but this one is definitely an outlier. Claw 2 Likely Trimerorhachis? Claws 3 & 4 Two more, the left is likely Trimerorhachis, but preservation on these aren’t great. Claws 5 & 6 Two more. I suspect the one on the right is Trimerorhachis, the one on the left may be as well but it is larger than usual. will add bones and other stuff to another reply.
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- jefferson county
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Hello, I recently visited a Permian site near Waurika Pond and collected microfossils for my students to explore back in the classroom. Is there a guide to identifying these fossils out there somewhere or is piecemeal searching here the way to go. If not, I will be making the one page guide over the summer have it to offer. Any help on something simple for my elementary aged students would be much appreciated. IMG_0064.DNG IMG_0065.DNG
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From the album: Permian
These are easily identified by the"cross bars" which protrude perpendicularly from the shaft of the neural/sail spines. -
From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
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From the album: Permian
Holmes (1989): "The skull and axial skeleton of the Lower Permian anthracosauroid amphibian Archeria crassidisca Cope" Art by Dmitry Bogdanov -
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
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From the album: Permian
Ornamented lungfish bone/scales are fairly common, but their teeth seem to be comparatively rare. This one is ~ 3 mm in its longest dimension. ^Mottequin et al. (2015) -
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
A "lucky break" in a Labyrinthodont tooth (likely Temnospondyl amphibian) still embedded in matrix reveals the intricate labyrinth of plicidentine. -
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. -
Hi y'all. Found this in some Permian micromatrix from Waurika, OK. There's no way I'm this lucky, but is this a very tiny Dimetrodon claw? I've tried to get access to this paper, but still waiting to see if the authors will send the text. I'm fairly confident it's at least sphenacodontid, based on pictures I've seen on the forum. It's about 3 mm in length. @dinodigger@jdp
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From the album: Permian
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From the album: Permian
This may be a pathology, or a tooth in development? -
From the album: Permian
These are virtually all the microfossils I found in two small bags of medium-grain matrix from Waurika, OK. The matrix was very fossil rich. The vast majority of the fossils are Xenacanth/Orthacanth shark teeth. Fish material is next most common, then amphibian, and lastly, identifiable reptile material is very rare. -
From the album: Permian
Small teeth (only a couple of mm tall) from what could've been a 10'-15' shark. -
From the album: Permian
A serendipitous natural break in a labyrinthodont tooth nicely displays the enamel in-foldings which give this class of amphibians their name. ^https://aaronrhleblanc.wordpress.com/2019/04/23/dental-origami-the-elegant-shapes-of-folded-dentine/ -
From the album: Permian
"Eel" shark teeth. -
From the album: Permian
Spine section from Dimetrodon sp. (limbatus?). -
From the album: Permian
These could be Eryops, but really can't say. -
From the album: Permian
Lobe-finned fish teeth, our close relatives.
