Today our paper on sauropod neck anatomy is formally published in PeerJ.

Here are cervical vertebrae 2-15 of Diplodocus carnegii in right lateral view, from Hatcher (1901: plate 3). Click to embiggen, and then just gaze in wonder for a while. Wouldn’t that look smashing, printed, framed, and hanging on the wall? I wonder if I will ever stop finding new interesting things to think about in this image.

A couple of days ago, a paper by Tschopp and Mateus (2012) described and named a new diplodocine from the Morrison Formation, Kaatedocus siberi , based on a beautifully preserved specimen consisting of a complete skull and the first fourteen cervical vertebrae.

Update, January 21, 2013: YES, it was! Scroll down for links to the entire saga. Because it’s doing a hell of an impression of one, if not. It’s got the huge cervical rib loops (wings), bifurcated neural spine (top fins), and even a condyle on the front of the centrum (cockpit pod). About all it’s missing are the zygapophyses and the cervical ribs themselves.

We’re off to Oxford next week for SVPCA, so things may be quiet around here for a few days. Catch you on the flip side.

This is the Brontosaurus that I grew up with: It’s by Kenyon Shannon, found on page 14 of The How And Why Wonder Book of Dinosaurs (Geis 1960). I call it Brontosaurus rather than Apatosaurus because this outdated rendition is forever tied to the outdated name in my mind.

Earlier this month I was amazed to see the new paper by Cerda et al. (2012), “Extreme postcranial pneumaticity in sauropod dinosaurs from South America.” The title is dramatic, but the paper delivers the promised extremeness in spades.

In the recent post on OMNH 1670, a dorsal vertebra of a giant Apatosaurus from the Oklahoma panhandle, I half-promised to post the only published figure of this vertebra, from Stovall (1938: fig. 3.3). So here it is: And in the second comment on that post, I promised a sketch from one of my notebooks, showing how much of the vertebra is reconstructed. Here’s a scan of the relevant page from my notebook.

Something I’ve always intended to do but never gotten around to is posting on some of the immense Apatosaurus elements from the Oklahoma panhandle. Here’s one of the most impressive, OMNH 1670, an isolated dorsal.

I don’t intend to write a comprehensive treatise on the morphology and phylogeny of Suuwassea . Jerry Harris has already done that, several times over (Harris 2006a, b, c, 2007, Whitlock and Harris 2010). Rather, I want to address the contention of Woodruff and Fowler (2012) that Suuwassea is a juvenile of a known diplodocid, building on the information presented in the first three posts in this series (Part 1, Part 2, Part 3).