Evan Johnson-Ransom
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ejrpaleo.bsky.social
Evan Johnson-Ransom
@ejrpaleo.bsky.social
2K followers 780 following 33 posts
PhD Student at the University of Chicago studying feeding behavior of theropod dinosaurs; tyrannosaur enthusiast 🦖.
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In lieu of the recent #Nanotyrannus paper, here’s a couple of photos of me at the Burpee Museum of Natural History with Jane (Nanotyrannus lethaeus) and CMNH 7541 (Nanotyrannus lancensis), along with a flesh model of Jane by @tylerkeillor.bsky.social. #FossilFriday #Dinosaurs #Paleontology
Just in time for Halloween. Paul Sereno and colleagues have shown off two exceptionally well-preserved #Edmontosaurus mummies from the “Mummy Zone”. #dinosaurs #paleontology
Tune in tomorrow (1pm CT, 13:00 CDT), for an important paleo announcement from Dr. Paul Sereno (@paulserenoofficial) on Instagram. #Dinosaurs #Paleontology
Reposted by Evan Johnson-Ransom
Here's a T. Rex bored to death trying to bite their own tail. My partner asked me to animate it in stop motion, after she watched a video about the very important topic of "could T. Rex chew its own tail like a dog". The puppet is still a work in progress 🦖
Three #Tyrannosaurus skulls of @SUEtheTrex of @FieldMuseum, USNM 555000 of @NMNH, and Tufts Love rex of @burkemuseum. The skull differences in these three T.rex specimens is amazing! #dinosaurs #paleontology #FossilFriday
Decided to do a test run on @FEBioSoftware with the adult #Tyrannosaurus of @NMNH and #Raptorex (a juvenile tyrannosaur). Baby tyrannosaurs show high skull stress and low jaw muscle forces, compared to the adult condition. #FossilFriday #Dinosaurs #Paleontology
I decided to get my own copy of National Geographic’s Dinosaurs with spectacular #Spinosaurus artwork by Dani Navarro. #FossilFriday #Dinosaurs #Paleontology
Reposted by Evan Johnson-Ransom
Andre J. Rowe & Emily J. Rayfield (2025)
Carnivorous dinosaur lineages adopt different skull performances at gigantic size
Current Biology 35(15): p3664-3673.e3

www.sciencedirect.com/science/arti...
Got a chance to see “Teen rex”, a new #Tyrannosaurus specimen, at the @denvermuseumns.bsky.social. It is a breathtaking specimen, I might add. #FossilFriday #Dinosaurs #Paleontology
Special thanks to Drs. Pat O’Connor & Dave Krause for hosting me at the
@denvermuseumns.bsky.social collections. I had the pleasure of measuring various #Majungasaurus specimens and it is such an amazing theropod! Skeletal mount from Stony Brook University #FossilFriday #Dinosaurs #Paleontology
Since this year has proven to be the year of #Spinosaurus. Here’s a fantastic reconstruction by EdenBuster. I greatly adore the colors. #theropods #paleontology #dinosaurs
For #SpinosaurSaturday here’s #Spinosaurus and #Tyrannosaurus with neck muscle reconstructions. For my research, I’m looking at how much force the two theropods generated with moving their heads and necks. Big thanks to Eden Buster for helping with the reconstructions. #dinosaurs #paleontology
Art by Dani Navarro. Figure from a 2024 paper I was on with Domenic D’Amore of @daemenuniv, @Dave_Hone, and Eric Snively of @OSUVertPaleo/@OSUMedicine. (2/2)
For #FossilFriday I’m pleased to announce that I’ll be presenting on #spinosaur feeding at @AnatomyOrg in Portland, OR on March 29. Come learn about spinosaur head and neck movements and feeding behavior. #AnatomyConnected #Anatomy25 #dinosaurs #paleontology (1/2)
Reposted by Evan Johnson-Ransom
Cats: Predators to Pets opens at the Field Museum tomorrow. I hope the story of how this exhibit came to be can one day be told because it is wild. For now, I think my colleagues' work speaks for itself!

Also, this exhibit may just include a human-sized cat tree & a chance to pose with salad cat.
Reposted by Evan Johnson-Ransom
QRP with your skull art 💀

I do mine in 3d
Reposted by Evan Johnson-Ransom
Watercolor of Sinraptor stealing a kill from a family of Guanlong. I worked with @ejrpaleo.bsky.social to put this together for his SVP research on early tyrannosaurs in 2021. 🦖 #paleoart #sciart