That’s FMNH PR 25107, better known as a the holotype of Brachiosaurus altithorax — the biggest known dinosaur at the time of its description (Riggs 1903) and still for my money one of the most elegant, along with its buddy and one-time genus-mate Giraffatitan brancai.
I have often lamented that there are so very few photos of the Field Museum’s Brachiosaurus mount from that brief six years — 1993 to 1999 — when it was the centrepiece of the main hall.
For reals, tho, Megatherium, why do you even?
Most dinosaurs are elegant animals. Tyrannosaurs are elegant biting machines. Chasmosaurs are elegent. Brachiosaurs are hella elegant. Even ankylosaurs have their own robust elegance. And then there’s Camptosaurus. Why do you have to be so lumpen? What’s your head doing down there? What the heck are your ilia doing up there?
BYU 14063, a left cervical rib of the turiasaur Moabosaurus in medial view. A few sauropods have bifurcated cervical ribs. The most dramatic example that I know of is the turiasaur Moabosaurus (Britt et al. 2017). Mike and I got to see that material on the Sauropocalypse back in 2016, which is how we got the photo above.
On the excellent and convivial social network Mastodon, someone going by the handle “gay ornithopod” asked what turned out to be a fascinating question: What are your thoughts on how the coloration of sauropods would change as they matured? What would you expect to see for example on this guy in comparison with an adult?
Brian Curtice, a long-time sauropod jockey who now runs Fossil Crates, was briefly in Price, Utah, last Friday to drop off an Eilenodon skull at the Prehistoric Museum. While he was there he snapped some photos of a new “Dippy” exhibition — reproduced here with permission. The entrance to the exhibition.
…that we have somehow managed to not blog about yet. It’s figured by Foster et al. (2018: fig. 18E-F), which is a free download at the link below. Foster et al. referred it and the other Mygatt-Moore apatosaurine material to Apatosaurus louisae, which I’ve always thought was a reasonable move.
Mike D’Emic’s new paper The evolution of maximum terrestrial body mass in sauropod dinosaurs is out! Yay! Relevant to our interests! Obviously I want to read this paper, so I simply … 1. Go to the paper’s page at Current Biology. 2. It’s paywalled.
Haplocanthosaurus tibiae and dorsal vertebrae. Curtice et al. (2023: fig. 1). Brian Curtice and Colin Boisvert are presenting our talk on this project at 2:00 pm MDT this afternoon, at the 14th Symposium on Mesozoic Terrestrial Ecosystems and Biota (MTE14) in Salt Lake City, and the related paper is in the MTE14 volume in The Anatomical Record.
Sauropod vertebrae in anterior view exhibiting a spectrum of variation in the dorsoventral positions of the neurocentral joint. Wedel and Atterholt (2023: fig. 1). As described in the last post, Jessie Atterholt is presenting our poster on this project today, at the 14th Symposium on Mesozoic Terrestrial Ecosystems and Biota (MTE14) in Salt Lake City, and the related paper is in the MTE14 volume in The Anatomical Record.