21st-century approaches to fleshing out the past! Mission: to use the structure of past & present animals to interpret evolutionary history...and to share it!

Athens, OH
Joined March 2014
Yesterday we held Currie Fest-a special symposium to honour Phil’s 50 years of conducting dinosaur research in Alberta. What an amazing career— thanks Phil for everything you have done for palaeontology, and inspiring so many!
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An excellent commentary on the article by @WitmerLab. Strongly recommend folks give it a read, especially those taking their first steps in the field.
Today's bombshell in @Nature by Lindsay Zanno & James Napoli (bit.ly/4qBE6ng) shows that putative juvvy T. rex fossils actually are Nanotyrannus. I reviewed the manuscript, so Nature invited me to write the News & Views commentary. Free link: rdcu.be/eNv94 🦖
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We have a new paper out! Turtle ancestors evolved a shell—but what else? We found that an unique rostral vasculature was also obtained gradually along the lineage, and that an earliest turtle Proganochelys likely retained a mostly ancestral state!🐢 doi.org/10.1186/s13358-025-0…
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WitmerLab retweeted
Today is both #NationalKittenDay & #ThyreophoranThursday so here's another photo from when 8-week-old Pinky visited WitmerLab and shared a moment with Pinacosaurus. Also in attendance were Tarchia & a couple stegosaurs. #PinkysDinosaurAdventure
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That is one well preserved specimen!
Today is both #NationalKittenDay & #ThyreophoranThursday so here's another photo from when 8-week-old Pinky visited WitmerLab and shared a moment with Pinacosaurus. Also in attendance were Tarchia & a couple stegosaurs. #PinkysDinosaurAdventure
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WitmerLab retweeted
Happy #JurassicParkDay, marking the 32nd anniversary of the release of the original & arguably still the best film in the JP-JW series. It's a crazy world rn, so it's healthy to take some time to celebrate the silly. And yes, my vintage JP puppet also has a vintage JP puppet! 🦖
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WitmerLab retweeted
Really important review of dinosaur physiology out today led by @Stephanopteryx & @paleofox w/ @Ninjemys & @CrocJock80—bit.ly/43I1gxJ. Cool to see this old ankylosaur friend staring back at me as Figure 1, from a collab w/ former PhD students @Ninjemys & Ruger Porter.
Dino physiology lessons? 200 years after the 1st dinosaur was named, new technologies yield amazing data from fossils. Physiology is vast, we hit on some topics & gave ideas for improving hypotheses regarding how dinosaur bodies may have worked. doi.org/10.1098/rsbl.2025.01… 🌡❤️🫁🦕🦖
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Dino physiology lessons? 200 years after the 1st dinosaur was named, new technologies yield amazing data from fossils. Physiology is vast, we hit on some topics & gave ideas for improving hypotheses regarding how dinosaur bodies may have worked. doi.org/10.1098/rsbl.2025.01… 🌡❤️🫁🦕🦖
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Bit of a surprise notice this morning but our open access paper on the endocranial ontogeny of Gorgosaurus has just been published! (1/n) onlinelibrary-wiley-com.ezpr…
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Hey everyone! Check out our new paper on the evolution of cranial kinesis in birds out in PNAS! pnas.org/doi/10.1073/pnas.24… We used 3D muscle modeling, linkage mechanics, and phylo methods to investigate feeding across the dino-bird transition 🦖🐦‍⬛(1/?)
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WitmerLab retweeted
Today marks the start of the #YearOfTheSnake according to Chinese astrology, so here are a few snakes that slithered into our work & our µCT.
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WitmerLab retweeted
For #NationalBirdDay, we bring you this lovely emu skeleton (OUVC 10560). (Some assembly required) #BirdsAreDinosaurs
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Always excited to hear that Wisdom, the now 74-y.o. mōlī (Laysan albatross), has returned to Midway Atoll to nest! She's the oldest known wild bird & has a new mate—and a new egg...at 74! We've done a bunch of work on mōlī, based on carcasses donated to us by the USFWS in Hawaii.
SHE DID IT AGAIN! Wisdom, the world’s oldest known wild bird, is back with a new partner and just laid yet another egg. At an approximate age of 74, the queen of seabirds returned to Midway Atoll National Wildlife Refuge last week and began interacting with a male.
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WitmerLab retweeted
For the 165th anniversary of Darwin's Origin of Species, here are 2 theropod dinosaurs—T. rex & a hummingbird. Despite all the differences, T. rex is more closely related evolutionarily to this hummingbird than T. rex is to, say, Allosaurus! Still blows my mind! 🦖🪶 More... 1/2
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Happy #Croctober! Glad to be a part of this #OA article led by @DrMarkYoung, @Julia__Schwab & @SteveBrusatte on evolution of one my favorite anatomical systems—air sinuses—in extinct marine thalattosuchian crocs! 🐊 Funding: @LeverhulmeTrust @NSF & others doi.org/10.1098/rsos.241272
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Big thanks to @LeverhulmeTrust for funding this work. Coauthor @Julia__Schwab played a huge role, and did some of this work as part of her PhD. And also thanks to our all-star team of coauthors: @WitmerLab @davedufeau @ExpeditionLive & many others not on twitter...
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Camarasaurus lentus front view is very cursed and i regret being responsible for this drawing. Skull based on the 3d model by @WitmerLab on sketchfab sketchfab.com/3d-models/cama…
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Today's #RandomActofAnatomy is a #Croctober update on #ShoeGator. Just now, Grace Vance & I opened the stomach of our alligator (OUVC 9761) to extract the shoe that this guy ate 20+ years ago. No other stomach contents—phew, no human foot bones! 🐊👢 youtube.com/watch?v=aWw0TWOe…
Thanks to Ryan Ridgely, we've got all 3 datasets for this shoe-eating alligator assembled—as well as the shoe itself. Coincidentally, I provided 3D viz of this exact specimen (OUVC 9761) to CBS for a 2011 episode of CSI Miami—where an alligator was the murder weapon! #shoegator🐊
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