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Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus) @mmarcosaurus.bsky.social · 4h

#FossilFriday
New species of Jurassic-era 'sword dragon' marine reptile discovered
abcnews.go.com/Internationa...

New species of Jurassic-era 'sword dragon' marine reptile discovered

A new species of ancient "sword dragon" marine reptile has been discovered in fossils found in England, according to researchers.

abcnews.go.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Palaeoncryptozoologist Briton @raftingzalmoxes.bsky.social · 2d

#PrehistoricPlanet
The Maastrichtian Earth is home to strange beasts...

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Palaeoncryptozoologist Briton @raftingzalmoxes.bsky.social · 1d

#PrehistoricPlanet
A giant charging into battle.

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Palaeoncryptozoologist Briton @raftingzalmoxes.bsky.social · 15h

Me: Mom can I have #PrehistoricPlanet Ice Age?
Mom: No we have PhP Ice Age at home.
PhP Ice Age at home:

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Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus) @mmarcosaurus.bsky.social · 5h

www.youtube.com/watch?v=ZBom...

GIGANTES PRÉ-HISTÓRICOS da AMAZÔNIA

YouTube video by Zoomundo

www.youtube.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Natee (they/them) @himmapaan.bsky.social · 13h

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.

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Silvia Pineda-Munoz, PhD - Climate Ages @climateages.bsky.social · 11h

A 126,000-year-old butt-drag just made fossil history.
A tiny rock hyrax scooted across the sand of ancient South Africa, and that moment was preserved in stone.

Even the smallest acts can echo through time.
🧪 #SciComm
buff.ly/dcGWTR4

The 126,000-Year-Old Butt-Drag That Rewrote What Counts as a Fossil

How a small animal’s odd habit turned into one of the most unexpected stories ever preserved in stone Some discoveries make headlines because they’re dramatic: new...

climateages.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

PaleoGalli @paleogalli.bsky.social · 8h

Reavaliação crítica de um suposto dinossauro saurópode dicreossaurídeo do Jurássico Médio de Gondwana e uma visão revisada dos relacionamentos evolutivos e biogeografia dos diplodocóides www.tandfonline.com/doi/full/10....

Critical reappraisal of a putative dicraeosaurid sauropod dinosaur from the Middle Jurassic of Gondwana and a revised view of diplodocoid evolutionary relationships and biogeography

Diplodocoidea is a diverse clade of sauropod dinosaurs that comprises three major lineages: Diplodocidae, Dicraeosauridae and Rebbachisauridae, with the former two united as Flagellicaudata. There ...

www.tandfonline.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Colpizen @colpizen.bsky.social · 7h

🌿 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 🙌

It's Sakher 🍉 @sakher23.bsky.social · 8h

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

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Scott Williams @museumguyscott.bsky.social · 6h

#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!

Museum of the Rockies @museumoftherockies.bsky.social · 7h

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.

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Museum of the Rockies @museumoftherockies.bsky.social · 7h

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.

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Natee (they/them) @himmapaan.bsky.social · 7h

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.

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Lackadaisy Tracy @lackadaisy.bsky.social · 10h

Hey everyone, we have some big news to share!

LACKADAISY - Last Call

A preview of Lackadaisy Season One - the Speakeasy is in its prime as Mitzi and the band regale the crowd with an original musical number, Last Call. This seemed like the ideal way to announce that Lackadaisy is now officially a ‪Glitch‬ Production!!

youtu.be

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Claude ✡️🦖🦕 @cascoclauda.bsky.social · 10h

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)

a photo of a cast of a gemuendina specimen at AMNH

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Claude ✡️🦖🦕 @cascoclauda.bsky.social · 11h

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

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 17h

#FossilFriday The skull of Ankylosaurus magniventris AMNH 5214 @amnh.org

Skull of Ankylosaurus in left lateral and dorsal view

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 17h

Breeden, B. T. et al. (2025). New specimens of Eucoelophysis baldwini from the Upper Triassic Chinle Formation, northern New Mexico, U.S.A., and their implications for the evolution of Silesauridae (Dinosauriformes). Journal of Vertebrate Paleontology. doi.org/10.1080/0272...

New specimens of Eucoelophysis baldwini from the Upper Triassic Chinle Formation, northern New Mexico, U.S.A., and their implications for the evolution of Silesauridae (Dinosauriformes)

Eucoelophysis baldwini is a silesaurid dinosauriform known only from a single fragmentary postcranial skeleton from the Petrified Forest Member of the Upper Triassic Chinle Formation near Ghost Ran...

doi.org

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 17h

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

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 17h

A new long and narrow‐snouted ichthyosaur illuminates a complex faunal turnover during an undersampled Early Jurassic (Pliensbachian) interval - Lomax - 2025 - Papers in Palaeontology - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...

A new long and narrow‐snouted ichthyosaur illuminates a complex faunal turnover during an undersampled Early Jurassic (Pliensbachian) interval

Ichthyosaurian faunas before and after the Pliensbachian stage of the Early Jurassic are known from numerous, often complete fossils. The two faunas are very different taxonomically, with only one of...

onlinelibrary.wiley.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 17h

www.manchester.ac.uk/about/news/r...

Rare Jurassic 'Sword Dragon' prehistoric reptile discovered in the UK

A near-complete skeleton found on UK’s Jurassic Coast has been identified as a new and rare species of ichthyosaur - a type of prehistoric marine reptile that once ruled the ancient oceans.The dolphin...

www.manchester.ac.uk

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 14h

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

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Thomas R. Holtz, Jr. @arctomet.bsky.social · 13h

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis - Atterholt - The Anatomical Record - Wiley Online Library anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and t...

anatomypubs.onlinelibrary.wiley.com

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Cary Woodruff @doublebeam.bsky.social · 16h

For #FossilFriday, it's a *NEW PACHYCEPHALOSAURID*(!), and a project that is very near and dear to my heart. Let's welcome #Brontotholus_harmoni!

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Dr Dean Lomax @deanrlomax.bsky.social · 17d

Today is THE day. “The SECRET LIVES of DINOSAURS” has arrived! 🦖

Holding this in my hands for the very first time. Honestly, I have so many emotions. It looks absolutely stunning. In full colour!

I cannot wait for you to read this.

Illustrated by @bobnichollsart.bsky.social

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Reposted by Marcos K. Pinheiro / "Marcos Wyvern" (Marcosaurus)

Bob Nicholls Art @bobnichollsart.bsky.social · 15d

THE SECRET LIVES OF DINOSAURS, by @deanrlomax.bsky.social, illustrated by @bobnichollsart.bsky.social, & published by @columbiaup.bsky.social, is OUT NOW!

#Art #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Dinosaurs #Birds #Pterosaurs #Reptiles #MarineReptiles #Palaeontology #Paleontology

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