Julián Bayona
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julianbayona.bsky.social
Julián Bayona
@julianbayona.bsky.social
84 followers 110 following 47 posts
Paleoaficionado.
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Reposted by Julián Bayona
lacerdajulio.bsky.social
Some more lovely weirdos! Toxodon & Mixotoxodon.

#SciArt #artbyjulio
A simple infographic showing a grayish, sparse-haired Mixotoxodon and a more tan, slightly hairier Toxodon against a solid background, with a human silhouette for scale. Each animal has a graphic besides it showing an estimated range, and its scientific name below it.
October 1, 2026 at 7:05 PM
Reposted by Julián Bayona
extinctmonsters.bsky.social
When Mantellisaurus was standing up
Ornithopod dinosaur mounted skeleton on an open platform. Upright godzilla pose. Same skeleton with horizontal posture. In a large case.
September 27, 2026 at 1:33 PM
Reposted by Julián Bayona
emmalerae.bsky.social
Corrected stickers are literally now in my hands.
A photo of me holding a sticker that reads "Dinosaurs Survived! Hell Creek Formation, North Dakota" It depicts a Western Meadowlark perched on top of the skull of the dinosaur Anzu.
September 14, 2026 at 9:48 PM
Reposted by Julián Bayona
sophiesaurus98.bsky.social
Today's four random pieces of palaeoart:

Arthur Lobus' Velociraptor and Protoceratops, Dmitry Bogdanov's Capitosaurus, Petr Modlitba's Tanystropheus, and John Bindon's Orodromeus!
A lightly feathered Velociraptor with a orange/red feathers grapples with a bright green Protoceratops, clinging to its back even as the ceratopsian bites its arm. The scene is recreated in fossil form as the famous Fighting Dinosaurs hovers above, like a ghostly omen. A, grey-green, thick-bodied Capitosaurus, an alligator-shaped amphibian, lurches along with short, muscular limbs. Its back has a prominent ridge starting at the base of the neck that stretches down the tail. The sides are splotched with brown speckles and splotches and have a subtle yellowish tint. A pair of slick-skinned Tanystropheus beside a calm sea. One strides over the rocks, as if preparing to fish. The other rests with its tail in the water, its long neck stretched high into the air as it peers back toward the ocean. A scaly, blue-headed Orodromeus bounds over a mossy log. Its back is lined with a fibrous ridge and its throat sports a turkey-like wattle.
August 26, 2026 at 1:14 AM
Reposted by Julián Bayona
drcraigmc.bsky.social
13mya in Colombia, the top predator wasn't a big cat or a bear. Probably Purussaurus, a caiman relative bigger than a bus. Bite marks found on the skulls & bones of massive hoofed mammals. South America was short on large mammal predators, so a crocodile filled the gap. #HowToBuildAGiant
Reconstruction of Purussaurus neivensis attacking Pericotoxodon platignathus. Credit: Miguel Hernandez
August 18, 2026 at 12:09 AM
julianbayona.bsky.social
New reconstruction of the skull of the large sparassodont Dukecynus, from the middle Miocene of Colombia, with basis on the skulls of Prothylacynus, Arctodictis and mainly Lycopsis, which seems to be the closest relative to Dukecynus known until know.
August 16, 2026 at 9:26 AM
Reposted by Julián Bayona
sophiesaurus98.bsky.social
Today’s four random pieces of palaeoart:

Luis Rey’s Deinonychus, Doreen Edwards’ Allosaurus, Charles Knight’s Mammuthus, and William Scheele’s Eusthenopteron!
A Deinonychus with grey and black streaked feathers charges at the viewer, arms spread and foot poised to deliver a kick. Its head is partially covered in a red, wattled skin. A green Allosaurus with a yellow, snake-like belly and long, dragging tail stands in a forest clearing. A diverse array of leafy foliage sprouts up around it, and several trees with chocolate brown trunks close the scene behind. A herd of mammoths with fur of mixed brown shades march across a snowy landscape, emerging from a conifer forest. The herd contains mammoths of several sizes and ages, including a tiny calf. A blue-scaled Eurhenopteron hauls itself onto a rocky shore, curving its thick body into a sinuous curve as it strains with its fleshy fins.
August 13, 2026 at 12:20 AM
Reposted by Julián Bayona
drcraigmc.bsky.social
1/10
People keep asking if Megalodon is still out there. It isn't, and a clear writeup of how we actually know wasn't really anywhere online. So I wrote one. Here's the short version, then the full piece. 🧪 🦈 #FossilFriday #marinelife
August 7, 2026 at 5:29 PM
Reposted by Julián Bayona
greatsaiyagirl.bsky.social
Art by Matt Ferguson
July 14, 2026 at 2:46 AM
Reposted by Julián Bayona
villesinkkonen.bsky.social
Indricotherium study #sciart
June 24, 2026 at 7:37 PM
Reposted by Julián Bayona
davehone.bsky.social
¡Hispanohablantes! Mi libro "Uncovering Dinosaur Behavior" ya está disponible en español con el título "La vida secreta de los dinosaurios". Ya se puede adquirir en Arpa Books.
May 22, 2026 at 2:31 PM
Reposted by Julián Bayona
tyrantlzrdqueen.bsky.social
Everything IS bigger in Texas...
Introducing TYLOSAURUS REX–“TEX”. A monster animal, a monster paper, & a monster project that I am *so* excited to finally share with everyone after ~5 yrs. Huge thanks to my coauthors, Mike & Ron, & to Alderon Games for bringing our lad to life!! #FossilFriday
May 22, 2026 at 10:50 PM
Reposted by Julián Bayona
villesinkkonen.bsky.social
Cave hyaena #sciart
October 21, 2025 at 6:50 PM
Reposted by Julián Bayona
villesinkkonen.bsky.social
Lazy sunday sketching. Deinotherium and some funky bipedal apes in a watering hole somewhere in east africa #sciart
May 3, 2026 at 3:46 PM
julianbayona.bsky.social
A reconstruction based in a new mandible of the largest species of Stirtonia, S. tatacoensis, shows that this animal had already the robust and large mandible that distinguish these monkeys of the other relatives like spider monkeys, since that they are more specialized to eat leaves.
April 30, 2026 at 3:14 AM
Reposted by Julián Bayona
branartworks.bsky.social
Ankalagon saurognathus 🐾
#paleoart #mesonychia #3d #handpainted
April 23, 2026 at 5:07 PM
Reposted by Julián Bayona
lordtrilobite.bsky.social
Finished Paraentelodon skull sculpture. 1/6th scale print, sculpted in #Blender.

#paleoart #sciart #paleontology
(1/2)
3D printed skull sculpture of Paraentelodon, with closed jaw held in hand. 3D printed skull sculpture of Paraentelodon, with open jaw held in hand. 3D printed skull sculpture of Paraentelodon, with closed jaw. 3D printed skull sculpture of Paraentelodon, with open jaw.
April 20, 2026 at 2:21 PM
Reposted by Julián Bayona
deepfrieddna.bsky.social
www.iflscience.com/was-benjamin...
Was "Benjamin" The Last Ever Thylacine? The Real Story Isn't So Simple
Too weird to live, too rare to die.
www.iflscience.com
April 18, 2026 at 9:31 AM
Reposted by Julián Bayona
sparrowlucero.bsky.social
everyone is so mean 2 me💔
April 13, 2026 at 10:23 PM
Reposted by Julián Bayona
astrapionte.bsky.social
Purussaurus brasiliensis sketches !!

#paleoart #caiman #Reptiles #crocodile
April 5, 2026 at 11:12 PM
Reposted by Julián Bayona
triloboii.bsky.social
#Marchofthemammals2026 day 24: Arctomeles dimolodontus going for a morning jog

#vectorart #paleoart #sciart
Vector illustration of Arctomeles dimolodontus, a relative of eurasian badgers, running adjacent to the viewer. It looks similar to a living badger with longer legs, more like a hog badger or honey badger. It is gray to brown on its top and black on its underside and face, with stark white markings on its face
March 28, 2026 at 8:55 PM
Reposted by Julián Bayona
triloboii.bsky.social
#Marchofthemammals2026 day 19: the fearsome Macroeuphractus moreni

#paleoart #sciart #armadillo
Vector illustration of Macroeuphractus moreni, a large carnivorous armadillo, laying down and looking at the viewer. Its skin is dark brown with a rusty colored carapace and claws
March 22, 2026 at 9:08 PM
Reposted by Julián Bayona
arctomet.bsky.social
dx.plos.org/10.1371/jour...
Retraction: A 12,800-year-old layer with cometary dust, microspherules, and platinum anomaly recorded in multiple cores from Baffin Bay
dx.plos.org
February 18, 2026 at 1:45 PM
Reposted by Julián Bayona
ausarchosaur.bsky.social
Sounds like a band name
February 18, 2026 at 2:07 PM
Reposted by Julián Bayona
arctomet.bsky.social
Huang, J., Wu, W., Mao, L. et al. Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur. Nat Ecol Evol (2026). doi.org/10.1038/s415...
Cellular-level preservation of cutaneous spikes in an Early Cretaceous iguanodontian dinosaur - Nature Ecology & Evolution
A juvenile iguanodontian from the Lower Cretaceous of China preserves both spikes and scales in its skin that are different from integumentary structures in either non-avian dinosaurs or extant squama...
doi.org
February 6, 2026 at 1:02 PM