Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
@mmarcosaurus.bsky.social
1K followers 640 following 3.8K posts
A geoscience student and artist who likes many things, such as dinosaurs, natural history, science, fantasy, music, games, movies, animation, anime, drawing and adventures! Instagram: https://www.instagram.com/marcosk.pinheiro/
Posts Media Videos Starter Packs
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
erniebufflo.bsky.social
Don't feel stupid, but also, if someone helpfully tells you "that's fake," the correct response is "oh shit, let me delete this" not doubling down and disabling comments.
paleofuture.bsky.social
Don’t feel stupid if you fell for fake video. It can be really hard to tell these days. But we do have to try and be careful with what we share because there’s so much AI video out there.

It’s just the world we live in now.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
angierasmussen.bsky.social
I don’t know who needs to hear this but the CDC is being eviscerated right now. America is not going to have any kind of outbreak response capacity after tonight. Americans’ health data is no longer secure. Say goodbye to federal public health in any capacity. It’s a disaster. We won’t recover.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
birdlifeglobal.bsky.social
Today is #WorldMigratoryBirdDay !🌏🐦

Celebrate the wonder of bird migration by birdwatching in your local area – every bird counts!🙌

You can contribute to conservation science and raise vital funds!🔎

Want to get involved? There’s still time!

Find out more👉 www.birdlife.org/getcounting/ #WMBD2025
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
cisneros.bsky.social
Um galinho de Brachyphyllum, um tipo de araucária que viveu no Nordeste há +100 milhões de anos. #FossilFriday
Foto mostrando um pequeno galho fossilizado, de cor laranja-marrom, dentro de uma laje de rocha amarelada.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
raftingzalmoxes.bsky.social
#PrehistoricPlanet
The Maastrichtian Earth is home to strange beasts...
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
raftingzalmoxes.bsky.social
#PrehistoricPlanet
A giant charging into battle.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
raftingzalmoxes.bsky.social
Me: Mom can I have #PrehistoricPlanet Ice Age?
Mom: No we have PhP Ice Age at home.
PhP Ice Age at home:
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
himmapaan.bsky.social
Hen and Wren.
Ink and gouache on Fabriano Medioevalis, approximately 95 × 64 mm.
Drawing in black ink, primarily in silhouette, of a hen and a Wren regarding each other quizzically. The hen stands in a patch of wild grasses whilst the wren perches on a small, leafless shrub in front of her. The hen's comb and wattle are the only touch of red gouache. The drawing is finely wrought and intricate. The piece is roughly the size of a business card.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
colpizen.bsky.social
🌿 Oh good news, Sakher is back with a new account :)
Please follow and quote him, help his precious family, donate or share his GFM
Thanks for them 🙌
sakher23.bsky.social
My name is Sakher, and this is my new account — after my old one was suddenly taken down.
For the past 4 days, I’ve been silent… not because I wanted to, but because I lost my only voice — the place where I used to speak to the world.
More talk in the comments….
GFM : gofund.me/f116bf44
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
museumguyscott.bsky.social
#FossilFriday- new #pachycephalosaur #Brontotholusharmoni (MOR 480), named by @doublebeam.bsky.social after the late, create MOR Chief Preparator Bob Harmon! #Paleontology #dinosaurs. Holotype is on exhibit in #CretaceousCrossroads at MOR!
museumoftherockies.bsky.social
Happy #FossilFriday! Meet Brontotholus harmoni (MOR 480), a new pachycephalosaurid from the Cretaceous Two Medicine Formation of Montana. Named after former MOR Chief Preparator Bob Harmon. Bronotoholus was named this week in a @ZoolJLinnSoc paper by MSU alumnus @doublebeam and colleagues.
Fossilized dome of Brontotholus harmoni, a large pachycephalosaurid dinosaur from the Cretaceous Two Medicine Formation of Montana, showing its rounded, textured skull surface displayed against a dark background.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
museumoftherockies.bsky.social
Happy #FossilFriday! Meet Brontotholus harmoni (MOR 480), a new pachycephalosaurid from the Cretaceous Two Medicine Formation of Montana. Named after former MOR Chief Preparator Bob Harmon. Bronotoholus was named this week in a @ZoolJLinnSoc paper by MSU alumnus @doublebeam and colleagues.
Fossilized dome of Brontotholus harmoni, a large pachycephalosaurid dinosaur from the Cretaceous Two Medicine Formation of Montana, showing its rounded, textured skull surface displayed against a dark background.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
himmapaan.bsky.social
I won't challenge you to identify this one. It might be a flying platypus for aught we know.
Extremely rough thumbnail sketch in pencil of a hen chasing what can only be described at this stage as a blob.
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
cascoclauda.bsky.social
at the request of no one, i'm bringing back #flatfuckfriday! this is gemuendina, the armoured pancake of early devonian germany, as @skyemcdavid.com so eloquently put it
(art by nobu tamura)
art of gemuendina a photo of a cast of a gemuendina specimen at AMNH
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
cascoclauda.bsky.social
who's that pokemon? it's stilpnia vitriolina aka the scrub tanager 🎉 sighted and sketched by @literallymiguel.bsky.social
two scrub tanagers on some plants. the most beautiful art you'll ever see a photo of a scrub tanager
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
arctomet.bsky.social
#FossilFriday The skull of Ankylosaurus magniventris AMNH 5214 @amnh.org
Skull of Ankylosaurus in left lateral and dorsal view
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
arctomet.bsky.social
S. Nosotti et al. (2025)
A new specimen of Macroplacus raeticus Schubert-Klempnauer, 1975 (Sauropterygia, Placodontia) from the Upper Triassic of Italy, with remarks on placodont phylogeny
Rivista Italiana di Paleontologia e Stratigrafia 131(3): 687-721

riviste.unimi.it/index.php/RI...
doi.org
Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)
arctomet.bsky.social
Full article: Critical reappraisal of a putative dicraeosaurid sauropod dinosaur from the Middle Jurassic of Gondwana and a revised view of diplodocoid evolutionary relationships and biogeography www.tandfonline.com/doi/full/10....
www.tandfonline.com