This was a problem, which is nowadays accounted for.
this post was submitted on 13 Sep 2025
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Beaversaurs
i saw someone draw a hippo based solely on the skeletal remains. they looked nothing alike.
Dinosaurs were probably chonky birbs.
They look at related and similarly adapted modern animals when trying to make visualizations of fossils, it's all just guessing.
Also the bones need to be in the right position
I've just watched the new movie and damn it's so stupid compared to the original ones.
I don't think dinosaurs were taking x-rays of beaver tails, my dude. Go read a book sometime.
This may seem cheesy or pathetic, and I apologize for that, but I want to say: thank you for catching me off guard with your silly comment and giving me a badly-needed smile and laugh when I'm fucking miserable and in a lot of pain. It's been a while. Seriously, I appreciate it. You're a hoot :)
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Fossils many times are more than bones and we get actual imprints of their whole tail or other parts of them
This is some real RFK level science here.
It’s sneaking up on creationist levels of ‘science’, like where they argue recreations of Australopithecus are just ‘imagination’ and present their own version of Lucy as as a quadriped, completely ignoring the overwhelming evidence from her skeleton that she could not have walked that way (and also ignoring that we have hundreds of other specimens of her species).
It really seems that lots of people’s conception of these fields is based on very outdated concepts, either unaware or ignoring all the evidence and advancements of the past 50 years or so.
No. This was created by someone who has no idea how any of this work. Soft tissues leave marks on bones.
Soft tissues can also become fossils under the right conditions. For an example, here is the fossil used for the B. markmitchelli holotype:
It’s the single most detailed and complete soft tissue fossil ever discovered. It took the technician six years to extract and separate the fossil from the surrounding stone. The technician’s name is Mark Mitchell, and the species was named after him.
The articles on that are a fascinating read, thank you!
Don't ruin my dream of fluffy dinosaurs 😭
Smaller dinosaurs might have had fluff, bigger ones probably didn't, like most big mammals. Bigger body, more heat to dissipate, but less relative surface to do so; the square-cube law can be a bit of a bitch, for big (probably at least somewhat) endothermic critters.
Giraffes have hair, though, and woolly mammoths were a thing, so big fluffy dinosaurs might have been a thing, especially in colder climates.
Also, looking at bird behaviour, I wouldn't be surprised if even mostly bald dinos had some colorful feathers on their arms, tail, or head for displaying...
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That is one cute beaver pic on the left. PM more of your beavers.
So one of the biggest leaps they have made in reconstruction over the last few decades is matching similar bone structure that supports soft tissue. It doesn't work for all soft tissue, but if the beavers tail bones have bumps or other features that hint at supporting extra soft tissue there is a chance.
All the stuff birds have, like inflatable neck sacks and feathers that move with muscles are examples of things we absolutely wouldn't get with fossils that are even better than a beaver tail.
Well, now I want to see an artist's rendition of a T. rex doing this:
The Prehistoric Planet documentary series does it with sauropods, it’s pretty sick.
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I mean… you can see the processes (bony protrusions on the vertebrae) are long and flat and only transverse (sticking out the sides, not up/down) so… it would be pretty obvious it was a flat tail? Sure maybe they might not get that it wasn’t fuzzy without any fossils if it, and maybe they make it slightly less round, but they’re scientists not idiots. Yeah some has come a long way and some older models sucked sure but it ain’t like we are vibe coding their appearance.
Vibe coded lion:
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I like to imagine T. rex arms were small because that's how they communicated with their octopus rider.
They evolved to be small so they cold more easily fit into the actuator gauntlets that controlled the Gundam.
They always use mammals for that kind of comparison. Show me a reptile with that kind of muscle/fat composition.
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All dinosaurs had beaver tails, got it!
One thing I wouldn't mind AI to do, train a model with standardised data like this, and have it match the reconstruction. After that it can use common and less common reconstructions. After that try to map as much info from a dinosaur fossil to said standardised data structure and generate possible reconstruction for said dinosaur
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Sure but also there are some fossils that DO have skin, and some even have preserved organs. And some have feathers, which is a pretty good indicator that there wasn’t some large feature we’re missing.
No doubt we are wrong on lots of counts, but I think we have good evidence for a lot of it as well.
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