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Juan Yu

@sjuanyu.bsky.social

Palaeo-enthusiast, also a fan of Transformers, Ace Attorney and One Piece Live-Action. Profile pic by @decepticonaiden.bsky.social, banner by @palaeotaku.bsky.social

172 Followers  |  207 Following  |  59 Posts  |  Joined: 19.09.2023  |  2.4393

Latest posts by sjuanyu.bsky.social on Bluesky

A freakin' huge griffenfly with a c. 70 cm wingspan, Meganeuropsis, flies vertically in pursuit of the comparatively tiny palaeodictyopteran herbivore Dunbaria fasciipennis. The long, spined legs of Meganeuropsis are reaching forward to trap the smaller insect, while a large wave crashes over rocks behind them. The pattern on Dunbaria is known from fossils, although the colours are not. It's suspected that Meganeuropsis, like other Palaeozoic members of the dragon/damselfly lineage, sported clear wings.

A freakin' huge griffenfly with a c. 70 cm wingspan, Meganeuropsis, flies vertically in pursuit of the comparatively tiny palaeodictyopteran herbivore Dunbaria fasciipennis. The long, spined legs of Meganeuropsis are reaching forward to trap the smaller insect, while a large wave crashes over rocks behind them. The pattern on Dunbaria is known from fossils, although the colours are not. It's suspected that Meganeuropsis, like other Palaeozoic members of the dragon/damselfly lineage, sported clear wings.

New #paleoart for #FossilFriday: the giant Meganeuropsis hawks Dunbaria in Early Permian Kansas, reaching to trap it with long, spiny legs. This image is set at the coast to reflect the marine occurrences of Meganeuropsis and Dunbaria fossils - not all Carbo-Permian insects lived in swamps! #sciart

05.12.2025 15:39 โ€” ๐Ÿ‘ 109    ๐Ÿ” 34    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

The one I've seen is that Tremarctines are "all wrong" because they would supposedly look the same as large Ursines. ๐Ÿคทโ€โ™‚๏ธ

30.11.2025 15:42 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

I donโ€™t mean to get angry about it but I hate seeing such an obviously colossal labour of intense, high-quality research smeared so wrongly by people that arenโ€™t making arguments in good faith. Again, there are some legitimate criticisms that can be made, but rude dismissiveness is not okay.

30.11.2025 03:42 โ€” ๐Ÿ‘ 32    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

An example: Iโ€™ve seen four people suggesting the consultants were bad at their job since mammoths are shown in extremes of snow and ice or in dry environments since โ€œthey lived on mammoth steppe and wouldnโ€™t risk going elsewhere.โ€

Because animals NEVER move around or experience weather!?

30.11.2025 03:42 โ€” ๐Ÿ‘ 36    ๐Ÿ” 2    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 0

There are things in Prehistoric Planet: Ice Age that could I could criticise, but Iโ€™ve seen a lot of bad faith complaints coming from younger palaeontology enthusiasts who frankly donโ€™t have a clue what theyโ€™re talking about and itโ€™s very frustrating. I hope I wasnโ€™t that annoying as a teenager!

30.11.2025 03:42 โ€” ๐Ÿ‘ 49    ๐Ÿ” 5    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 0

Yes, there was a deliberate push to get rid of all scientific names; of course, I think this is a massive mistake. And, indeed, no roaring for sabretooths, their hyoid anatomy indicates that they couldn't do it :) #PrehistoricPlanetIceAge

28.11.2025 12:12 โ€” ๐Ÿ‘ 32    ๐Ÿ” 6    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1

OK, soooo at some point in the future we'll start talking about the animals and sequences that were considered for #PrehistoricPlanetIceAge but didn't make it over all the hurdles. We're talking giant lemurs, deinotheres, paranthropines, additional cats, zygomaturines and more.

28.11.2025 11:27 โ€” ๐Ÿ‘ 104    ๐Ÿ” 11    ๐Ÿ’ฌ 10    ๐Ÿ“Œ 1

#PrehistoricPlanet #PrehistoricPlanetIceAge

26.11.2025 15:45 โ€” ๐Ÿ‘ 30    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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I'm in love with this shot due to that.

27.11.2025 03:36 โ€” ๐Ÿ‘ 31    ๐Ÿ” 5    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

A mounted skeleton, as I and others have written before, is as much a sculpture as anything else, and these are bizarrely inert for what are clearly intended to be showpiece specimens

23.11.2025 16:00 โ€” ๐Ÿ‘ 31    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

There is not a speck of dynamism or momentum in these mounts. Their legs are sedately planted, their tails at nuetral: one is apparently biting the other's neck, but it's clearly in an offhanded way, because the bitten animal does not appear to be reacting

23.11.2025 15:58 โ€” ๐Ÿ‘ 32    ๐Ÿ” 3    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 0
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I understand that the Natural History Museum of Abu Dhabi spent a truly wild amount of money to purchase Stan the T.rex, which makes it all the odder that its mount of two fighting tyrannosaurs is so utterly sauceless

23.11.2025 15:53 โ€” ๐Ÿ‘ 93    ๐Ÿ” 17    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 1

warning: french. in case that's a trigger

06.01.2025 10:56 โ€” ๐Ÿ‘ 2576    ๐Ÿ” 735    ๐Ÿ’ฌ 34    ๐Ÿ“Œ 116

Keep his family safe gets so much more impactful when you remember this is the man that gives his weapons people names, you just cant beat that.

23.06.2025 03:18 โ€” ๐Ÿ‘ 26    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

No ammount of development and backstory that they try to shove on a singlecharacter will ever defeat the simplicity and goofiness of a bunch of idiots.

And thats why when the goofy idiots get actual development and backstories it hits so much more.

Heavy spending all he earns just to-

23.06.2025 03:16 โ€” ๐Ÿ‘ 30    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Part of it is that TF2 genuinely does a much better job of tying the gameplay directly into the story. TF2's story plays to the strengths of its medium while Overwatch fails to connect the game and the story at all

23.06.2025 03:56 โ€” ๐Ÿ‘ 37    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

it just feels weird being some cheerful fake-pixar character laughing and saying cutesy marketable catchphrases as you kill others. this kind of crap doesn't want to embrace the violence and hate of killing, the satisfaction, the humor, and it comes across as phony and lame.

23.06.2025 07:39 โ€” ๐Ÿ‘ 10    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

and it just falls completely flat. a scout on the enemy team murders you constantly and tells you that you suck which angers you immensely and that's by design! channeling player aggression to him. tracer isn't mean in personality so when she constantly buzzes you that frustration has nowhere to go.

23.06.2025 07:32 โ€” ๐Ÿ‘ 9    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

idk it's hard to explain, yeah. but i know there's something inherently better to scout's writing as an insanely obnoxious loudmouth that fits his role as "frustratingly fast guy that gets in your face" perfectly, whereas tracer, a character with a similar niche, is just generically peppy and cute

23.06.2025 07:29 โ€” ๐Ÿ‘ 8    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

i think the best name to call it is *lame*. it's what an out of touch or really boring person would find cool. the violence only ever results in ragdolls, no bloody gibs, some characters are generically sexy in a tame and acceptable way to be appropriate for TV, the humor is extremely tame

23.06.2025 07:11 โ€” ๐Ÿ‘ 8    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
A black and white cat sits inside a wooden cat tower, looking up with round eyes that make him look like a kitten.

A black and white cat sits inside a wooden cat tower, looking up with round eyes that make him look like a kitten.

Sometimes he looks just like a kitten :3

16.11.2025 13:16 โ€” ๐Ÿ‘ 3443    ๐Ÿ” 528    ๐Ÿ’ฌ 18    ๐Ÿ“Œ 2
Preview
a computer generated image of a planet with the letter e visible ALT: a computer generated image of a planet with the letter e visible

UNI-CRON!

17.11.2025 07:04 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
A black-and-white cat is lying on the arm of a light green couch, resting his head and looking sleepy with one front paw placed on the armrest.

A black-and-white cat is lying on the arm of a light green couch, resting his head and looking sleepy with one front paw placed on the armrest.

Iโ€™m boredโ€ฆ maybe Iโ€™ll go destroy a planet

13.11.2025 13:12 โ€” ๐Ÿ‘ 2897    ๐Ÿ” 677    ๐Ÿ’ฌ 33    ๐Ÿ“Œ 13
A huge paw print from a grizzly bear on a piece of paper in bright colors in a nice frame

A huge paw print from a grizzly bear on a piece of paper in bright colors in a nice frame

Okay, on reflection I am slightly relaxing my rule on "only human-made art".

...Oh, no, I'm still not supporting genAI art, but I *will* be allowing art made by bears

17.11.2025 06:08 โ€” ๐Ÿ‘ 361    ๐Ÿ” 38    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 3

If the democrats ran on full legalization of marijuana, they'd win in a landslide.

But nope, they support the republican war on drugs, violent cops, and asset forfeiture (cops stealing from innocent people because they claim drugs were involved).

11.11.2025 01:56 โ€” ๐Ÿ‘ 85    ๐Ÿ” 18    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1

Better yet, I'm told Rand Paul put forth an amendment to take this language out of the bill, and almost 30 democratic senators voted to keep this language in the bill.

Democrats support republican policies. They hate you.

11.11.2025 01:55 โ€” ๐Ÿ‘ 100    ๐Ÿ” 21    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
A black and white cat lies on a sofa with his tongue slightly out

A black and white cat lies on a sofa with his tongue slightly out

What is this creatureโ€ฆ?

09.11.2025 13:10 โ€” ๐Ÿ‘ 3599    ๐Ÿ” 626    ๐Ÿ’ฌ 71    ๐Ÿ“Œ 9

There's even more that we talk about that doesn't fit neatly into this summary. This paper was a long time coming; the project goes back to 2021. Big shout-out to my coauthor @skyemcdavid.com, who shaped the ideas about gigantism and helped make this work as thorough and rigorous as it is

05.11.2025 18:29 โ€” ๐Ÿ‘ 25    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
a bird with a long neck is walking across a sandy beach Alt: Clip of two Quetzalcoatlus annoying a Tyrannosaurus on a beach. From Prehistoric Planet ("North America")

Evidently, there was some selective pressure in the Late Cretaceous that encouraged azhdarchids to become huge multiple times. Exactly what, we don't know. Easier to travel long distances by foot or by wing? Protection from theropods? Were mesopredatory niches free real estate? We shall see...

05.11.2025 18:29 โ€” ๐Ÿ‘ 52    ๐Ÿ” 7    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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a bird with a long beak is on a beach near the ocean Alt: Clip of a Hatzegopteryx with a colorful head crest dragging a branch along a tropical beach. From Prehistoric Planet ("Islands")

...yet mostly lived at the same time, at the end of the Cretaceous. This suggests that giant azhdarchids may not have been making intercontinental flights on the regular, as has been previously proposed. The giants probably adapted their specific ecosystems - particularly Hatzegopteryx

05.11.2025 18:29 โ€” ๐Ÿ‘ 24    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

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