captain-colosteid.bsky.social
Paleo Mutt ⚫️⚪️🟤🤟🏿🕉 📿 💜 Master’s student at Carleton University 🇨🇦 studying 🧐 colosteids and other early tetrapods🦎 🦴 🐟 ⛏ 🪨He/They
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This the one you were telling me about?
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Oh wow! I think you are right. Time to go down a bobbit worm rabbit hole. Thanks!
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Ah so it’s preservation. That is unfortunate
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To show what I’m talking about. Everything in the image is cartilage, teeth, or denticles. Obviously newer scans can produce better results, but do you think there is some material that if rescanned we might be able to visualize more of the cartilaginous braincase?
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Like the new scans of Doliodus show a ton of cartilaginous structures not seen in the old scans. Obviously not everything will even leave behind faint traces. But is it simply just a matter of acquiring better scans of some material?
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These cartilaginous structures do not commonly fossilize. Do these structures leave behind faint hard to detect signatures? Are there other methods that we can use to pick up these faint structures? Like different lighting techniques or synchrotron scanning?
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Ohhhh. Do any of them provide a nice brain endocast? I don’t think I saw one in the paper, but I’ll go back and check
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Ah that one. I’ve never seen photos of it, but the segmentation was really nice
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Who is this little fella?
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Everyday it just gets worse. It’s hard to see how things will get remotely better anytime soon. I’m hoping that years from now we can learn some vital lessons from this… but history is doomed to repeat itself, especially when they try to lie and erase it
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These will make a fine addition to my collection #stapes #schemes
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Its the bones of a very interesting paper, but nothing more than that.
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They say: “Rather than studying past extinctions & projecting them forward for millennia, we think that a more useful focus is on identifying the largest current and impending threats to global biodiversity” but their response to how to define them is basically: the paleontologists should do it.
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Yes, I agree with you here. I think the paper is ideologically driven. They don't seem to try to hide it. I think discussing how we define mass extinctions (especially the one we may or may not be living in 😉) is important, but this paper didn't really add anything to the discussion.
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Also the concluding remarks aren't great. I also wished they would have proposed definitions for mass extinctions rather than saying “We think that this is an important question for paleontology, but of limited relevance to conservation”
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They state “Promulgating questionable
claims about a current mass extinction risks the credibility of conservation biology and science in general” which seems to me to be politically driven and aiming to tackle the “doomed world” mentality that some conservationists are struggling with currently.
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I read through this. It seems they are stuggling with workers labeling events mass extinctions without a hard description as to what a mass extinction is, but they say “we are convinced that Earth is on the brink of major biodiversity loss”. Does it really matter what we label it at this point?
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I might be in Sweden in the future, so attending DinoCon is highly probable. Maybe I can convince some of the dino folks to see the light that is early tetrapods! Early Tetraopd Con 2026!
😅 #earlytetcon does not have the nice ring to it that #dinocon does
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I might finally be able to attend this year. Any early tetrapod speakers?
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Thanks for sharing! Was a fun project to be included on. So many bones! 🤪
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Any ichnofossils?