Dinosaurs And Non-Dinosaurs xkcd.com/3204/

Haolong dongi, amazing new spiny (yes,really) iguanodontian from early cretaceous china #sciart

Result from the Joggins Formation #paleostream! This Canadian site is an absolute classic and even if you are not familiar with its name you probably know at least one of its major players...

Alickmeron Sen & Ray, 2025 is an objective junior synonym of Alwalkeria Chatterjee & Creisler, 1994 @slvrhwk.bsky.social @ijreid.bsky.social www.tandfonline.com/doi/full/10....

Early Arthropods xkcd.com/3199/

First paper of 2026 is out for #FossilFriday, and the first of probably several ornithischian papers over the next interval. Here my coauthors and I describe some tantalizing bits that suggest that ornithischian diversity in the Morrison Formation is higher than previously recognized.

Very excited to share Scyllacerta creanae, a new Permian stem-reptile from South Africa known from an aggregation of several individuals. This specimen provides unprecedented detail regarding the anatomy of the early reptile skull. 🦎 (1/🧵)

This #FossilFriday we are pleased to have published the new younginid taxon Scyllacerta from the late Permian of South Africa 🇿🇦 This beautiful aggregation has the holotype and has been in the literature for 30 years as “juvenile Youngina”. Photo taken before scanning at the @esrf.fr

Introducing a new Permian reptile: Scyllacerta creanae With a tympanic fossa on the quadrate and no lower temporal bar, Scyllacerta challenges long-standing ideas about when-and-how hearing evolved in reptiles 🦎👂 🔗 doi.org/10.1111/pala...

The origin of the tympanic fossa in reptiles revealed by a late Permian neodiapsid: new species Scyllacerta creanae onlinelibrary.wiley.com/doi/10.1111/... #FossilFriday @semifossorial.bsky.social @morphobank.bsky.social

Got encouraged to do one of these lol #Portfolioday #paleoart I love pretty scenery and accurately depicting animals in their enviroments!!! :P

Well this is as done as it's going to get. Tiliqua frangens, a megafauna skink from pleiocene and pleistocene australia with large pointy scales feeding on spring wildflowers. #palaeoart #palaeoart #reptile #lizard

"Scylla and Charybdis" 🦀

#2025SVP was a hit for Idaho and the IMNH, with a big showing for Peecook Lab members past and present! @garyonyx-mcgoy.bsky.social @slvrhwk.bsky.social @zhejiang0pterus.bsky.social @paleorob.bsky.social @idahostateucose.bsky.social

Out in @nature.com today, we shake up the ornithischian family tree. Remember those weird Late Cretaceous iguanodontians, the rhabdodontids? Well they're weird because they aren't iguanodontians. They're ceratopsians. Well, at least some of them are... www.nature.com/articles/s41...

Sauropods xkcd.com/3185/

After four months and 36 illustrations, I present the final Kem Kem chart – a look at of one of the most incredible ecosystems the world has ever seen. Short thread below! #sciart #paleoart

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Excited to announce that my second manuscript, “Fossilised Melanosomes Reveal Colour Patterning in A Sauropod Dinosaur” has been published in @royalsociety.org !! Diplodocus scales are complex and diverse, and it turns out their color patterning was even more so. A 🧵🦕 1/26

“Dragging a ladder through long rows of bookshelves can be exhausting. It’s much more efficient to have a co-worker who’s able to reach the top shelves on their own or at least give you a boost climbing up.” #miragaia #stegosaur #dinosaur #paleoart #library #librarian #books

New species of jewel-babbler, the hooded jewel-babbler (Ptilorrhoa urrissia), described based on individuals pictured in camera trap photos: onlinelibrary.wiley.com/doi/10.1111/... 🪶🧪 (📷Woxvold et al.)

Buffa et al.’s paper on the enigmatic Permian reptile 🦎 Galesphyrus and the origin of Neodiapsida is out in the Journal of Systematic Palaeontology! Read the thread 👇 for some important takeaways from our study @valentinbuffa.bsky.social #Paleontology #Reptile #Permian doi.org/10.1080/1477...

Nosso bebê nasceu 🥹 Uma nova espécie de pterossauro do Araripe, encontrada dentro de um vômito fossilizado de dinossauro 🤍. A natureza é linda! Kkk Seja bem-vindo, Bakiribu waridza! Acesse o artigo: www.nature.com/articles/s41...

JUST PUBLISHED!!!! A major azhdarchoid phylogeny paper coauthored with @skyemcdavid.com - the fruit of years of work - is now out in @journalsystpal.bsky.social! New clades, reconstruction of size evolution, and more. Full thread to come soon! www.tandfonline.com/doi/full/10....

An interesting quirk of today's taxonomic revision is that one jacket from the Jane Quarry, long assumed to contain specimens of famous species, actually contained what would become two holotypes of two distinct species — Infernodrakon hastacollis and Nanotyrannus lethaeus

Did some giraffes and forgot to post them: Canthumeryx, Climacoceras gentryi, Georgiomeryx, and Palaeotragus inexspectatus #paleoart #scieart

Qilin tungurensis- A newly identified new genus of giraffe from the Miocene of Inner Mongolia, China.

Meet the newest species of Brazilian flea-toad 🐸 Brachycephalus nanicus! 🐸 B. nanicus is <1cm long & dwells under the leaf litter in the cloud forests of Serro do Mar, southeastern Brazil I CT scanned this specimen for the osteological description Out today in Zootaxa: mapress.com/zt/article/v...

Reconstructed skeleton of Spicomellus ('spiky collar'), certainly one of the most unusual dinosaurs known. Found in the mid-Jurassic El Mers Group of Morocco, it is also the oldest definitive ankylosaur.

Last week in Nature: ooo look at my spiky dino. This week in Nature: EVERYTHING YOU KNOW ABOUT BIOLOGY IS WRONG www.nature.com/articles/d41...

In fact, we suggest that the tympanum of modern reptiles originated in the common ancestor of Parapleurota in the middle Permian. Excitingly, recent developmental work by Bronzati et al. has shown that the modern reptile tympanum was present in their common ancestor, congruent with this hypothesis

Fantastic work by Xavier and team, many years in the making ~ So many important implications for our understanding of reptile (and broader) relationships. More to come soon! 🦎

Hi all, me, @richardjbutler.bsky.social and the amazing UK-US-Moroccan team are delighted to announce that.. we have a new specimen of Spicomellus AND IT'S WAY WEIRDER AND WAY COOLER THAN WE EVER IMAGINED!!

Fujianvenator

A scene of ca. 252 million years ago during the Late Permian in the Madumabisa Mudstone Formation in Zambia, Africa. You can see here various therapsids and a Pareisaur #paleoart #art #permian

Now introducing Amenoyengi mpunduensis ('many-tooth from Mpundu'), a small moradisaurine captorhinid from the late Permian of Zambia with multiple rows of teeth! #Permian #Paleontology 😄 www.tandfonline.com/doi/full/10....

And I named one of them!!! Meet Aulacephalodon kapoliwacela - the Iron Hog - the first and so far only geikiid known from the Luangwa Basin! I worked on this taxon for my Master's thesis, and it's been lovely

As of this morning, SVP Memoir 23 - Vertebrate Evolution in the Permian Rift Basins of Tanzania and Zambia - has been published!!! What's inside? Let's dig in:

Geologic Periods xkcd.com/3120/

I am proud and grateful to present a dream project today in @nature.com www.nature.com/articles/s41... Meet #Mirasaura grauvogeli, a #wonderreptilewith skin appendages that rival feathers and hairs, challenging our view of reptile #evolution🪶🦎

Here it is! Please welcome the AMAZING Mirasaura grauvogeli, a NEW MARVELOUS Drepanosaur published in NATURE today! This astonishing reptile lived during the Middle Triassic in Europe and it possessed an amazing crest made of plume-like structures! I was commissioned to bring it to life #paleoart

Everyone, please meet Sphenodraco! A newly described sphenodontian (a tuatara relative) from the Late Jurassic of Europe published TODAY! #paleoart #reptiles #sciart #art

Southern #Sweden during the late Cretaceous. A pair of pteranodontids trying to keep a healthy distance from an admittedly passive mosasaur. Meanwhile, the hesperornithids take a short break from foraging to catch some rays. #paleoart #sciart #scicomm #dinosaurs

Khankhuuluu ("dragon prince") is a recently named tyrannosauroid from Mongolia's Bayanshiree Formation. 🦖 This reconstruction includes the holotype (white) and a slightly smaller referred specimen (pink). Both scale bars = 1 m.

New #paleoart for #FossilFriday: battling Borealopelta with deep (instead of "high waisted") armour and pigmentation. There's a scientific rationale behind this #ankylosaur #art, which you can read here, along with viewing the hi-res and WIPs of the painting. www.patreon.com/posts/130274... #sciart

happy #PrideMonth btw #gayleoart #paleoart #sciart

In another post, I discuss the evolution of different types of phytoplankton: what it means for the appearance of our planet and animals that ingested them. When did marine carotenoids become abundant enough to turn the animals that ate them pink and red? The early Mesozoic, probably? (3/4)

To those who celebrate... #VelociraptorAwarenessDay

Happy I was able to assist at the St. George 'Substation Quarry' last week with others from the @imnh208.bsky.social! My personal highlight was finding a decent theropod tooth among several fish scale fragments. 🦖