I was asked yesterday to post a walkthrough of Life Over Time, the shortest-lived and generally weirdest iteration of the Field Museum’s fossil halls. If you visited between 1994 and 2004, this is the version you saw. I’ve got some time, so let’s do this.

A megaraptoran skeleton! From the end of the Cretaceous! Excited about the announcement of Joaquinraptor, the top predator down south when tyrannosaurs ruled the north. The Schwarzengger to T. rex's DeVito (at least in the arms category). My thoughts: www.livescience.com/animals/dino...

No matter how well we think we know dinosaurs, there's so much left to learn. New blog from me about Spicomellus, a dinosaur that knew spiked collars are hot. 🧪

Do you think a Pliosaurus would appreciate a Costco rotisserie chicken

Take a moment to think about midcentury dinosaurs today

Mini marsupial bounces back from the brink! Once listed as Endangered, the crest-tailed mulgara expanded its range by more than 48,000 km² between 2015 and 2021, lifting its status to Least Concern. Biocontrol contributed to the heartwarming bounce-back. https://f.mtr.cool/afllseseeb

URUYIELLA, from the ✨NEW VIDEO✨: www.youtube.com/watch?v=YULv... I dedicated to Temnospondyls🐸. Uruyiella lived in the Triassic period in what is now Uruguay #uruyiella #temnospondyli #paleoart

#OTD 19 September 1991, walkers in the high Ötztal alps on the Italian border, found a body melting out of the ice. It turned out to be the remains of a c.5200 year old man preserved with all his kit. Of course, it was essential to replicate him in Playmobil. 1🧵 #PlaymobilÖtzi #PlaymobilInfestation

#pixelart #artpost

That’s a dog

I drawed a dinosaur. #SciArt

Millions of years ago, California had a familiar yet alien landscape from what it sees today. This painting highlights the animals that may have passed through Death Valley long ago. This painting features as a 4ft mural hung in the Copper Canyon Visitor Center in southern Cali.

Paleomedia and/or lost media enthusiasts, I would like your help with resolving a vague childhood memory. Does a visual that looks like this (context being then-recent oviraptorid nest finds) ring any bells? It's the only thing I remember from a VHS (presumably) that I watched like 20 years ago

Mesozoic art is coming this month! Let's talk about it with @tetzoo.bsky.social and @sharkbitesteve.bsky.social What makes good palaeoart? How are we shaping the perception of extinct wildlife? Where lies the future of this craft? cont...

Paleomedia and/or lost media enthusiasts, I would like your help with resolving a vague childhood memory. Does a visual that looks like this (context being then-recent oviraptorid nest finds) ring any bells? It's the only thing I remember from a VHS (presumably) that I watched like 20 years ago

Helicoprion is a large eugeneodont shark, most famous for its buzzsaw-like jaw configuration. Depicted here hunting Mooreoceras. This painting is commissioned by the NPS and highlights fossil specimens known from Guadalupe Mountains Park, TX

While it's easy to make friends with a passing herd, it still pays to watch for what's lurking in the shadows... This painting was commissioned by the NPS to showcase potential species that create the busy trackways from the Naturita Formation and Colorado National Monument.

So many cool fossils are revealed each month that I'm getting the ol' blog going again to enthuse over more of them. Here's the latest, on a 12-foot-long carnivorous croc that stalked terrestrial prey around 70 million years ago. 🧪

#ZAVACEPHALE IS FINALLY OUT! 🥳 Our first definitive Early Cretaceous pachycephalosaur! (~15 my older than the previous oldest pachycephalosaurs) And the first hand material for the clade! I can't tell y'all how much of a pleasure it was to review this paper! ☺️

All of Solnhofen happened in the span of like three million years

Are you tired of people constantly overestimating body size of marine reptiles? No longer! We provide equations to estimate body size in ichthyosaurians, mosasaurids, and thalattosuchians. 1/4

Due to their bizarre dome-like skulls, pachycephalosaurs are among the most famous groups of #dinosaurs. Yet their fossil record is puzzling. A remarkable new fossil from Mongolia is shedding light on the group's beginnings. Latest for @sciam.bsky.social: www.scientificamerican.com/article/olde...

Big pterosaurs. You like them, right? If yes, then you're gonna LOVE my SVP 2025 poster with @skyemcdavid.com. Check it out during Poster Session 2 on Thursday, November 13th!! (If no, take a long look in the mirror)

SVPers, come see my presentation on Pterosaurs from Eastern North America during Poster Session 2 on 11/13! Highlights include several new Azhdarchid morphotypes and new revelations on the history of North American pterosaur research. See you in Birmingham! @zhejiang0pterus.bsky.social

Have you ever wondered why we’re here and dinosaurs like T. rex vanished? I wrote a book just for you. 🦖 ☄️🌿🐆

I usually don’t name art but this one of Pentaceratops chasing a pair of Sphaerotholus is called “Get off my lawn.” #paleoart #watercolor #sciart #dinosaur

A reminder about the #SVP2025 workshop "Palaeoart Past and Present: the view from the UK" for those last-minute early-bird [=cheap] conference registrants! It's shaping up to be a great one-day pre-conference event: please come along if you're a #paleoart fan attending SVP!

The Green River Formation is rich in species diversity. This snapshot captures nocturnal animals emerging as their diurnal neighbors start to settle in. This work is commissioned by the NPS to highlight species found in the Fossil Butte Monument in Wyoming.

Meet @albertonykus.bsky.social ! iobopen.com/2025/09/15/m...

Now this is a cool one - it clears up the affinities of two unusual azhdarchid specimens and some aspects of azhdarchid evolution. Congrats to @rv-pegas.bsky.social and colleagues!!!!

A Thylacoleo and Her Joey

After an incredibly long gestation period, I have a new paper out reviewing all the data and evidence we have on the pterosaurian uropatagium. Full link to the paper is in the blogpost linked below: archosaurmusings.wordpress.com/2025/09/16/t...

Really venturing out of my comfort zone for this next critter in the Kem Kem series - a fish! This is Axelrodichthys, a giant mawsoniid coelacanth with a potential upper length of 4m. Size comparison below ⬇️ #paleoart #sciart

In other news - a paper I coauthored is published at @elife.bsky.social! It investigates immune response to tuberculosis infection in wild-derived house mice. My contributions were relatively minor - I bred some of the mice and collected biometric data - but it's good to see it out!

It’s the birthday boyyyyyy 🎂🎉🎊 Happy 30th to Claude!!!! @calacademy.bsky.social

Today new publication has been released in @journalsystpal.bsky.social We are proud to present you Cariocecus bocagei, a new hadrosauroid from the Papo Seco Formation (Barremian, Early K) of Portugal. Come with me in this post series to learn more about it! 1/x

Here is some non-satire for you: Trans rights forever.

Here's my skeletal of Medusaceratops lokii, a Albertaceratopsini Centrosaurine from the Judith River formation of Montana. This taxon is known from a large bonebed containing many specimens. thanks to both @lordtrilobite.bsky.social and @andyfarke.bsky.social for helping the restoration! scalebar 1m

Calling all Paleoartists! I am assembling a team to reignite a paleoart collab I started years ago. Allow me to reintroduce the Prehistoric Journey Art Collab! A collaborative mural featuring over 100 unique prehistoric animals to choose from. More details below! (1/4)

UMMP 57588: specimen showing the Late Devonian genera Archaeopteris (fronds) and Callixylon (trunks, branches) belonged to the same plant. This critical discovery by UMMP curator Charles Beck illuminated the structure of trees contributing to some of the planet's most ancient forests. #FossilFriday

"A queer feminist approach ... would not frame chemically-poisoned frogs as pitiable freaks of nature, as well-intentioned scientific and media coverage tends to do."

I re-illustrated #Anchiornis again, and it looks quite a bit different from usual!!! This still matches the known data for this #dinosaur, but I really wanted to avoid it looking copy-pasted this time. I've given a full description of it on my Patreon. #FossilFriday #paleoart #paleontology #sciart

I only just heard of What’s Eating Your Collection? and it’s so fascinating. Unless you’re a collections manager, you have no idea the constant effort required to conserve what’s placed in a museum’s care.

I made a little ceramic drepanosaur! His name is Gigan, and I love how he came out

Forgot to announce I have a new paper out this week! Animals that are more front-heavy have thicker, differently shaped forelimb bones to deal with the extra load. Limb bones alone may thus be useful proxies for body shape - but posture complicates things. royalsocietypublishing.org/doi/10.1098/...

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications - Lafferty - The Anatomical Record - Wiley Online Library anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

Hearing news that primatologist Prof Jeff Meldrum - probably best known as lone extant academically qualified advocate of the supposed biological reality of #bigfoot - died Tuesday after sudden downturn in health. Thanks Brandon Peecock of Idaho State University for info.

California Republic c. 66 MYA #augustynolophus #dinosaur #paleoart

I have experienced firsthand primal squamate violence, a force rarely seen since the end of the Mesozoic. What they don’t tell you is that it comes not from the big monitors or tegus, but rather, him:

Dino skull