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Congratulations to Daniel Dunfee in our lab who did an awesome job today defending his @OhioU master's thesis on the ontogeny of the braincase & endocast in the small ornithopod dinosaur Dryosaurus based on specimens collected from Dinosaur Nat'l Mon't at the Carnegie Museum of Natural History. #FossilFriday

Another great #OUStudentExpo with lab students presenting their thesis research! Grace Vance won 1st place for her work on seal vasculature & physiology, Peter Rhynard Peter Rhynard 🦖 presented his work on Allosaurus, & Daniel Dunfee presented his work on Dryosaurus! BobcatsDiscover

It's both #NationalPetDay & #FossilFriday, so here's Pinky and Tyrannosaurus rex. Which is the better pet? Pinky threw up in multiple places this morning, so the competition is closer than you might think! 🦖>🐱? #PinkysDinosaurAdventure

Congratulations to undergrad Peter Rhynard Peter Rhynard 🦖 on completing his awesome OHIO Honors Program thesis! He generated a skull atlas for the "Big Al" specimen of Allosaurus (MOR 693) & compared paranasal sinuses between A. jimmadseni & A. fragilis. 🦖 Thx Museum of the Rockies & Carnegie Museum of Natural History

#HappyEaster🐰 from your friends at WitmerLab! A crunchy take on that traditional favorite this #Easter — now with added calcium!

A very young black bear cub skeleton just came out of the dermestid colony, showing how unfused the bones are. Comparing the cub to an adult male really emphasizes the transformation that takes place during growth. Both carcasses donated to us from ODNR a couple decades ago.

Not only did Peter Rhynard Peter Rhynard 🦖 finish his awesome honors thesis on Allosaurus, we're happy to announce that, after he graduates in a week or so, he'll be starting PhD work with Michelle Stocker at VT Paleobiology! Peter's been a great lab member & we wish him all the best!

Bit of a surprise notice this morning but our open access paper on the endocranial ontogeny of Gorgosaurus has just been published! (1/n) …ary-wiley-com.ezproxy.lib.ucalgary.ca/doi/10.1002/cn…

Happy to contribute to this new #OA article in Journal of Comparative Neurology led by Jared Voris Jared Voris on brain endocast ontogeny in the tyrannosaur Gorgosaurus. The Royal Ontario Museum specimen was helpful but Jared's work on the Royal Tyrrell Museum of Palaeontology specimens is stunning. doi.org/10.1002/cne.70… 🦖

We microCT-scanned the young black bear cub we shared here. Undergrad Grace Vance's dissection was perfect so it's worth sharing here & eventually on MorphoSource. We had scanned the adult male skull years ago so for fun I recreated a digital version of the photo I had posted.🐻

As chaos and carnage seem to dominate the headlines these days, I sometimes seek respite in the Mesozoic Era, when the chaos and carnage was somehow more comprehensible. #FossilFriday

#FossilFriday Sometimes dinosaurs follow me home for research. Here are a ~2 yo Tarbosaurus (3D print of MPC-D 107/7) & a subadult/teenage Tarbosaurus (cast of PIN 553-3/1, right half of braincase), with Pinky for scale. 🦖 #PinkysDinosaurAdventure

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.2… 🌡❤️🫁🦕🦖

Really important review of dinosaur physiology out today led by Stephanie Baumgart, PhD 🦖🐦 & Emma R Schachner PhD w/ Jason Bourke & Clinton Andrew Grand Pre, PhD, PhD—bit.ly/43I1gxJ. Cool to see this old ankylosaur friend staring back at me as Figure 1, from a collab w/ former PhD students Jason Bourke & Ruger Porter.

1998 was a still near the dawn of the digital revolution, so when I CT scanned this Edmontonia skull, I left with a big stack of film—no contrast adjustment, no 3D viz. But 27 years later, it's better than nothing when you gotta check out a feature or two. #FossilFriday

Every day is #DinosaurDay for us, but here's an old friend, a young Corythosaurus, flirting with that difficult transition to adulthood, showing its brain endocast & expanding airway & sinuses within its narial crest. Published w/ David Evans in 2009: bit.ly/3kh7fRG

Now here's a book to sink my teeth into! #FossilFriday Mark Witton

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! 🦖