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Ivan Kay

@ivan23.bsky.social
272 followers 153 following 252 posts

Animal enthusiast and palaeoartist / wildlife artist. Zoology BSc, Vetebrate Palaeontology MRes. I sell prints and originals and consider commissions, please get in touch!

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Reposted by Ivan Kay
Jeope! @jeope.bsky.social · 05/10/2026
I visited Oak Hammock Marsh this early today to watch the sunrise and morning goose flyout, and later visited the final bird banding session of the season there. And what luck – they caught a merlin! #birds
A medium-sized brown-and-beige falcon with imposing yellow feet and big sharp claws is held in the grip of a bird bander. The falcon has big black eyes and looks mildly perturbed.A medium-sized beige falcon is cradled in the arms of a bird bander. A metal band is being attached to the falcon’s leg.A medium-sized brown and beige falcon, held in the grip of a bird bander, is now fully perturbed, with its bill wide open.Ye gads, the falcon is now biting the bander’s hand!
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Ausarchosaur @ausarchosaur.bsky.social · 04/10/2026
Didn’t know they also had these mosasaur and plesiosaur sculptures
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Natee (they/them) @himmapaan.bsky.social · 04/10/2025
Tyrannosaurus rex was named 120 years ago today on 4th October, 1905. I would do things a little differently now, but this drawing is from 2020.
Graphite and brown pencil drawing of the head of a Tyrannosaurus rex, mouth agape, in profile, facing left. The drawing is characterised by intricate linework and texture.
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Ivan Kay @ivan23.bsky.social · 18h
Wow this takes me back. Used to play this bad boy on Windows... 95? 98? Can't recall, but it was incredible
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Emily Thomas 🦤🏳️‍🌈 @zhejiang0pterus.bsky.social · 05/10/2026
Are there any Eyewitness Virtual Reality Dinosaur Hunter fans in the audience tonight
The paper case for the CD-ROM game Eyewitness Virtual Reality Dinosaur Hunter. It reads "Dinosaur Hunter. Bring dinosaurs back to life! For ages 8 and up". It features a 3D model of a T. rex skeleton and cutout images of various dinosaurs adorning the title of the game. In the upper left corner is the Dorling Kindersley logo (an open book with the red letters DK on the pages)A screenshot of Eyewitness Dinosaur Hunter. It shows a gloomy museum hallway designed to look like it's made of stone. Images of dinosaurs are on the walls; here you can see Barosaurus, Diplodocus, Stegosaurus, and Apatosaurus. There's a fern on the ground. A timeline on the floor is labeled "155 MYA". It leads into a room which is labeled "Cretaceous. 144-95 MYA". This is all rendered in juicy 16-bit color with the best 3D rendering 1996 can offerAnother screenshot of the game. It shows the inside of another gloomily lit room in the museum. Exhibits on the walls show dinosaur heads and skulls, plus things like dinosaur skin and a model of an Edmontonia. Now this is a liminal space
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kdaea.bsky.social @kdaea.bsky.social · 06/05/2026
Old art (2017) one of the first pieces I attempted to draw a background on. :'D Miss these boys 🧡
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Mrs Quent @quarkquent.bsky.social · 04/10/2026
I recognise that both October 7th and the subsequent shit show by Bibi in Gaza has been horrendous, but you didn't need to let it make you go literally insane.
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Mrs Quent @quarkquent.bsky.social · 04/10/2026
Not to be all "I didn't get more right wing, the left just became more insane", but... I swear to god the Two-State Solution was the normal and sane one mere years ago.
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James Vaughan @equusonthebuses.bsky.social · 22h
Evergreen headline. 100 years old today…
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Ville Sinkkonen @villesinkkonen.bsky.social · 04/10/2026
There are some pieces of paleoart that to my eye are so fantastic that I regularly come back to them to just stare and marvel them. Peter Trusler has made many such pictures but these 3 particular ones are just of such exquisite quality that they take my breath away every time.
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hammancheez but spooky @hammancheez.bsky.social · 01/10/2026
Yall wanna see a 2 hour old highland cow
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Adam Yates @reddirtpalaeo.bsky.social · 30/09/2026
This got me thinking about heterodox ideas. Not outright crank-level stuff but opinions in the field of palaeontology that are in the minority. I definitely have some, e.g. I still think Palorchestes had a trunk, or that thalattosuchians really aren't mesoeucrocodylians. Anyone care to share theirs?
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Ivan Kay @ivan23.bsky.social · 30/09/2026
I think you need DNA for high resolution cladistics, no matter how much palaeontologists might (understandably) not want that to be the case. Happy to hear evidence to the contrary though 3/3
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Ivan Kay @ivan23.bsky.social · 30/09/2026
As it turns out, morphological characters just aren't good enough for anything more than very low resolution phylogenies. Can a morphology based analysis tell you that theropods are a natural group? Sure. Can it give you a reliable phylogeny of twenty very similar looking theropods? I doubt it. 2/n
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Ivan Kay @ivan23.bsky.social · 30/09/2026
My big heterodox idea is that palaeontologists often badly over-estimate how precise we can be about phylogenies of extinct groups without DNA. Many old ideas about the relationships of living animals were completely overturned when genetics was brought into play. 1/n
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Good Trailcams @goodtrailcams.bsky.social · 28/09/2026
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Liam Elward Paleoart 🇵🇸 @paleobyliam.bsky.social · 29/09/2026
Some of the studies I made of the extinct megatooth shark Otodus megalodon, for an upcoming commission I can hopefully share soon. Megalodon is known almost exclusively from fossil teeth, which have not been found articulated with jaws.
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Wallace Polsom @wallacepolsom.bsky.social · 15/03/2025
Eyvind Earle (1916-2000), concept paintings of Maleficent as the Dragon produced for Disney’s “Sleeping Beauty.”
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Julio the Artist @lacerdajulio.bsky.social · 28/09/2026
Xenorhinotherium & Macrauchenia my beloveds This was mostly an exercise in achieving different fur textures in Blender, as well as an excuse to make an infographic since I haven't made one of those in a while. #SciArt #artbyjulio
A simple infographic showing a mostly tan, short-haired Xenorhinotherium and a dark brown, long-haired Macrauchenia against a solid background, with a human silhouette for scale. Each animal has a lineart of South America besides it showing an estimated range, and its scientific name below it.
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c0nc0rdance @c0nc0rdance.bsky.social · 11/06/2026
What in the name of Beetlejuice ARE these things? They're zebra morphs of 'squat lobsters', likely in genus Allogalathea. They're not true lobsters & are more closely related to hermit crabs. Now which one is white with black stripes & which is black with white stripes? (📷: hoopderscotch)
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 25/09/2026
#FossilFriday The pachycephalosaur Stegoceras has an itch at the Smithsonian National Museum of Natural History
Mounted skeleton of the little pachycephalosaur Stegoceras, scratching its lower jaw with its tiny front paw
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Natee (they/them) @himmapaan.bsky.social · 28/09/2023
When I saw the Titanosaur exhibition at NHM London with friends, @dinomaster.bsky.social suggested I drew a Pudgy Patagotitan. I had a hard time pudgifying what is already _beyond_ pudgy, and could have pushed the exaggeration much further. I merely ended up with a short-legged titanosaur.
Ink drawing of a Patagotitan with, despite earnest attempts, only slightly exaggerated proportions, seen in side view, facing and walking towards the right. It has a gently silly expression at least.
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Joschua Knüppe @joschuaknuppe.bsky.social · 25/09/2026
At the beginning of the month Drexel University made public that they want to close the Academy of Natural Sciences at the end of the month. The academy is the oldest natural history museum in the Americas and this would end more than 200 years of research and outreach.
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Brett "Solidarity 2026" Banditelli @banditelli.org · 22/09/2026
ya I'm a swiftie. 🪶
a white swift flying towards the camera and taking a bite with mouth open. I'm a fan of those birds.
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✮ 𝒥𝒶𝓃𝑒 ✮ @janesgallery.bsky.social · 23/09/2026
@atlanticbirding.bsky.social #BirdOfTheDay #Raptors any bird of prey From a little Pygmy Falcon ❤️ to a huge CrownedHawk Eagle ❤️ #BirdPhotography #Birds #Nature #birdwatching #ECK
Pygmy Falcon Crowned Hawk Eagle
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Emily Higgs Art @emilyhiggs-art.bsky.social · 22/09/2026
Oviraptor ~ egg thief 🥚🍳 . This was a design I worked up a while ago when looking at famous fossil discoveries which included the oviraptor found sitting on top of a nest. . This design is part of a much bigger themed piece which I look forward to sharing soon
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John Timmer @jtimmer.bsky.social · 22/09/2026
If that's having "two brains", then why not call the spinal cord a brain and say we've got three? Why leave the forebrain out of this entirely? They have equally distinct developmental histories.
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John Timmer @jtimmer.bsky.social · 22/09/2026
But again, we already knew the hindbrain was developmentally distinct from its two flanking tissues, the midbrain and spinal cord, that lots of interesting genes get activated at the boundary between two of them, etc. And that, because of this, these neural segments go on to do different things.
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John Timmer @jtimmer.bsky.social · 22/09/2026
The paper behind the PR shows the hindbrain lineage becomes distinct very early in embryonic development. If you want to make stem cells into hindbrain neurons, you have to send them through the hindbrain path first. It's solid work! From a quick skim, the researchers seem to have done a nice job.
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John Timmer @jtimmer.bsky.social · 22/09/2026
We've know the hindbrain is distinct for decades—the midbrain hindbrain boundary was identified as a key signaling center back when I still had a research career. This 2012 paper cites references on the topic going back to the 1990s.
journals.biologists.com
Midbrain-hindbrain boundary patterning and morphogenesis are regulated by diverse grainy head-like 2-dependent pathways
The isthmic organiser located at the midbrain-hindbrain boundary (MHB) is the crucial developmental signalling centre responsible for patterning mesencephalic and metencephalic regions of the vertebra...
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John Timmer @jtimmer.bsky.social · 22/09/2026
Some of the same factors are used to pattern all of these, but because of differences in developmental history and the presence of distinct environments at different points in our body, the cells of these segments interpret even the common signals in different ways.
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John Timmer @jtimmer.bsky.social · 22/09/2026
For non-developmental biologists: we don't think of ourselves as segmented (that's for insects, after all), but our nervous system is segmented. The forebrain is set up different than the midbrain, which is set up differently than the hindbrain, which is set up differently than the spinal cord.
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John Timmer @jtimmer.bsky.social · 22/09/2026
Ok, this "there are two separate brains" thing appears to be making the rounds, and I want to be absolutely clear: this is a press office overhyping some perfectly reasonable science that won't come as a surprise to most developmental biologists.
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Cliff PervoSCARY @pervocracy.bsky.social · 20/09/2026
This is a canary resuscitator, which miners would use to revive canaries that had passed out from toxic gas, because ideally not only do you care, you don't even leave the bird behind. just a little mining history and not at all a furious scream
A canary in a sealed box attached to an oxygen tank
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Good Trailcams @goodtrailcams.bsky.social · 19/09/2026
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Jorge Ginés 🎃👻🇪🇺 🌍🛰️ @lithospheric.jorgegines.com · 18/09/2026
5,000 sols on Mars. Congrats, Curiosity! science.nasa.gov/photojournal... ⚒️🧪
While parked at a sand ridge nicknamed “Chocolatal,” NASA’s Curiosity Mars rover used its black-and-white navigation cameras to capture panoramas at two times of day. The first was taken on Aug. 30, 2026, at 9:56 a.m. local Mars time; the second was taken on Sep. 2, 2026, at 5:39 p.m. local Mars time. Those dates correspond to the 5,000th and 5,003rd Martian days, or sols, of the mission.
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Jed Taylor @jedtaylorartist.bsky.social · 29/08/2026
Same again but just feet now.
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Heitoresco @heitoresco.bsky.social · 16/09/2026
Ilustrações para meu video sobre Glândulas de Sal em Spinosauridae: Propostas de Hone & Witton + Comparação com Baryonychinae
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Heitoresco @heitoresco.bsky.social · 16/09/2026
Paleoambiente
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Ron Filipkowski @ronfilipkowski.bsky.social · 18/09/2026
Joe Rogan suddenly acting like he was an innocent bystander for years and had no idea what Trump was all about until now and did nothing to help get him elected is pretty weak and pathetic. Just own it.
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Ben Miller @extinctmonsters.bsky.social · 18/09/2026
Daeodon is a genuinely horrrifying animal. #FossilFriday
Two casts of big-headed, vaguely piglike beasts prowling across desert sceneClose up of cast skull with stupidly big teethReal mounted skeleton against a blue background
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Sean Closson🦖🦕 @coffeeblack.bsky.social · 18/09/2026
Some #tattoo concepts from a few years ago. #dinosaur #trilobite #albertosaurus #paleoart #sciart
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BOGLUDDITE @brucemackay.bsky.social · 18/09/2026
This is the face of a man who knows he is about to become a meme.
The Pope looking bleak because someone has gifted him Rasputin's soul and is resigned to the fact that the photo of this moment is going to go viral.
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John Scalzi @scalzi.com · 18/09/2026
Inside of it is a faith hugger
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Rosemary Mosco @rosemarymosco.com · 18/09/2026
Humaning.
A four-panel comic. In panel 1, a Northern Cardinal and American Goldfinch perch above a busy crowd in a city, looking down. The cardinal says "It's a nice day to go humaning." The goldfinch says "Just look at them. Majestic." In panel 2, a close-up of the two birds. The cardinal says "Nobody tells you that you'll reach a certain age and suddenly get into humaning. I hit 3 years old, and then bam."The birds are looking out over the crowd scene. In panel 3, the cardinal says "Their calls sound funny to us, but each one has a unique meaning." Below, people are saying various things: "I'm tired." "Where's my phone?" "I'd murder a burrito." In panel 4, the birds look down excitedly at a man walking by. The cardinal says "Wait, is that a guy who got dressed in the dark and put his shirt on inside out and backwards?" And the goldfinch exclaims, "Holy... that's a lifer!"
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Emily Troyer @fishfetisher.bsky.social · 17/09/2026
Um, sorry IACUC, but WHAT?
"Species Info - List all species: please note here that chondrichthyans are not true vertebrates."
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 16/09/2026
Knew this was coming; glad it is finally out! The body temperature of Tyrannosaurus rex | Science Advances www.science.org/doi/10.1126/...
science.org
The body temperature of Tyrannosaurus rex
Despite an extensive history of study, quantitative constraints on the thermophysiology of Tyrannosaurus rex remain limited. Here, we derive a thermodynamically based determination of T. rex body temp...
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Natee (they/them) @himmapaan.bsky.social · 17/09/2026
Detail from the same piece as in the above post, with further work in progress: grasses and other low-growing ground cover have been intricately inked in.
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Albert Dros @albertdros.bsky.social · 15/09/2026
Different angles of the majestic Mount Fuji. Can't wait to be back again later this year.
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Sean Closson🦖🦕 @coffeeblack.bsky.social · 15/09/2026
Anzu wyliei color sketch with Staedler Mars 780 red and blue leads, Faber-Castell Goldfaber Aqua watercolour pencils, and Tombow Dual Brush Pens. #anzu #dinosaur #sketch #paleoart #sciart
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