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Showing results for tags 'Wellington'.
Found 11 results
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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. -
Hi y'all, I was thinking again about some Permian reptile teeth, I've seen them referred to online as 'parareptile,' but would like collective and/or professional insight. They are pretty distinctive, with a smooth labial face, and a striated lingual face. These are all from Waurika, OK (Wellington fm, Lower Permian). I have several examples, but they're not much different from these two. @jdp @dinodigger 3.5 mm tall: 2 mm tall: They vaguely remind me of a Caseid tooth, which has the same character of the striations/no striations (or I at least think this one is Caseid...). ^ Reisz (2019)
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- microfossil
- microfossils
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I'm always buying new wellington boots as the sharp shale on the beach always splits them. Does anybody have any recommendations of hardwearing waterproof wellies that last a long time for beach collecting? Thanks
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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
- dimetrodon grandis
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From the album: Permian
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Vert? reptile? amphib? fish? not a vert? SOLVED! - Orthacanthus tooth
hadrosauridae posted a topic in Fossil ID
OK, I need some help on a fossil I uncovered today. Details: north-central OK, Permian (mid to lower), Wellington fm, in a slab of mud/sand stone with claystone inclusions and acid reactive. Lots of plant material and partial tetrapod skull in this large slab. With all that out of the way, I hope someone here can give me an ID on this tiny bugger. Its roughly 4mm across. I'm really at a loss for what this is. The only thing that comes to mind is that it might be a vertebra. The two processes (extension) are curved, giving it the appearance of an elephant skull. You can see there is a fresh break at the centrum. Before it broke, is was nicely rounded and whole. So experts, what your opinion here? Vert? reptile? amphib? fish? not a vert? One last thing. Both this, and the skull frag, have a weird deep red coating on the surface. In a way if annoying as its a little harder to get through than the rest of the matrix, but then again I know when I'm getting very close to bone because of the color.
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