We did a series of measurments on Spinosaurids (head, neck, and leg) and we found them closer in morphology to shorebirds. This suggests they would have frequented in terrestrial or aquatic environments and likely waded near bodies of water, as opposed to being quadrupedal.
Tune in tomorrow at @paulserenoofficial on Instagram. #Dinosaurs #Paleontology.
Something big is happening at the Sereno Fossil Lab. Stay tuned for tomorrow. #Dinosaurs #Paleontology
I would like to thank my coauthors @eric-snively.bsky.social, Danny Barta, Paul Gignac, Ryan Felice for their collective effort in this research project, the advice and feedback of @histo-holly.bsky.social and paleo students/staff of OSUMedicine, the reviewers and @anatrecord.bsky.social.
The phylogenetic results show that the groups Tyrannosauroidea, Abelisauridae, and Allosauroidea have relatively lower cranial stress magnitudes than megalosauroids and maniraptoriformes.
Upon examining the compressive and tensile stress of the theropod crania, we consistently see tyrannosaurs display low compressive stress when biting and low tensile stress when opening their jaws.
Deep-snouted tyrannosauroids show lower cranial stress than the slender-snouted alioramins and small early tyrannosaurs which have high cranial stress.
Non-tyrannosauroid coelurosaurian theropods like dromaeosaurids, compsognathids, and megaraptorans show varying cranial stress magnitudes.
Non-tyrannosauroid theropods show varying levels of cranial stress such as short-snouted abelisaurs, allosauroids, and early theropods having low stress magnitudes and spinosaurids showing high stress magnitudes.
When scaled at equalized cranial lengths and forces, small tyrannosauroids and medium-sized tyrannosauroids show relatively high stress that’s either comparable or lower than other similarly-sized theropods. Large deep-snouted tyrannosauroids show relatively lower stress than other large theropods.
For the FEA analyses, we sampled areas of the crania as phylogenetic character data. We also compared the stress magnitudes in both the 2D and 3D models of #tyrannosaurs and found the results to be comparable, supporting 2D FEA’s significance.
For this study we generated 2D models of 50+ theropods and used FEA and phylogenetic analyses to evaluate their feeding function and the evolution of feeding behavior in Theropoda.
There have been numerous analyses investigating the feeding function of an adult #Tyrannosaurus, but there have been few analyses that broadly examined other tyrannosauroids, in addition to other non-tyrannosauroid theropods.
For #FossilFriday I’m pleased to announce our new paper on investigating the cranial performance and evolution of feeding behavior in tyrannosauroids and other theropods. Here’s a thread on some of our major findings. #Dinosaurs #Paleontology #Tyrannosaurus #Theropods
I just got word that my #tyrannosaur manuscript got accepted for publication. A huge thank you to my coauthors @eric-snively.bsky.social, Danny Barta, Paul Gignac, and Ryan Felice. #FossilFriday #Dinosaurs #Paleontology #Theropods
Spinosaurus
Suchomimus and Spinosaurus skull
Ichthyovenator
Baryonyx
Had the pleasure of seeing a variety of spinosaurs at the Fukui Dinosaur Museum. #FossilFriday #Dinosaurs #Paleontology
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
Photo by Paul Sereno & Tyler Keillor.
Photos by Paul Sereno & Tyler Keillor. Photogrammetry and 3D reconstruction by Dan Vidal and Maria Ciudad Real. Artwork by Dani Navarro
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
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
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)
