We’ve been hinting about it for ages, coyly writing “Brachiosaurus” brancai in quotes and muttering darkly about things not being how we all tend to assume … now, finally, the paper is out.
The paper
Taylor, Michael P. 2009. A re-evaluation of Brachiosaurus altithorax Riggs 1903 (Dinosauria, Sauropoda) and its generic separation from Giraffatitan brancai (Janensch 1914). Journal of Vertebrate Paleontology 29(3):787-806.
… and its very unexciting nomenclatural correction in in Journal of Vertebrae Paleontology 31(3):727
Unofficial supplementary information online
The Nexus file and full-resolution figures.


December 29, 2009 at 5:33 pm
Hi could you please have a look at the following vertebra http://www.christraxon.pwp.blueyonder.co.uk/Vertid.htm and tell me what it might be from. I thought it might be Pliosaur but have been informed that id is not so i am now a little confused. It is from the Kimmeridge clay if East Yorkshire, and measures 2.5″ x 2.5″ x 2.5″.
many thanks
Chris
December 31, 2009 at 1:04 am
[...] the name nor the specimen are exactly new as such, but this has to go to Giraffatitan. How many names prompt the author to put an apology in the acknowledgements of his [...]
January 25, 2010 at 2:09 pm
[...] 25, 2010 In no-long-quite-so-recent paper on Brachiosaurus and Giraffatitan, I gave as one of the autapomorphies of Brachiosaurus proper that the [...]
February 26, 2010 at 2:36 am
[...] am sort of nonplused by this. I’m certainly not saying that my 2009 paper is unassailable: as soon anyone comes along with evidence that Brachiosaurus and Giraffatitan [...]
February 27, 2010 at 12:14 am
[...] of the few sauropods I am in anyway familiar with is Giraffatitan (formerly Brachiosaurus) and as a result I have developed more of an interest in the brachiosaurs [...]
March 31, 2010 at 5:04 pm
[...] change without warning at any time. [The Brachiosaurus altithorax reconstruction above is from this paper. White bones are ones that we know are definitely from that species; light grey probably are; [...]
October 11, 2010 at 4:59 pm
[...] Sauropoda) and its generic separation from Giraffatitan brancai (Janensch 1914) — published in [...]
October 15, 2010 at 11:26 pm
[...] “The giant Brachiosaurus finds of the Germans” are now, of course, Giraffatitan. [...]
July 6, 2011 at 11:46 am
[...] my Brachiosaurus/Giraffatitan paper (Taylor 2009a), though, I subverted the usual structure by postponing the Systematic Palaeontology [...]
April 15, 2012 at 3:34 pm
[...] Start with an existing matrix, add constraints, re-run it, and see how the tree-length changes. Since I am familiar with it, I started with the matrix from my 2009 paper on brachiosaurs. [...]
April 26, 2012 at 7:21 am
[...] for once this really is Brachiosaurus and not Giraffatitan. Quite some time ago I put out a call for photos I could use on the Musings to help provide [...]
September 12, 2012 at 9:07 pm
[...] Tanzania. If you want to know why this animal is named Giraffatitan and not Brachiosaurus, here‘s your [...]
February 19, 2013 at 10:16 am
[...] 1 (the sauropod-history review) was in the Geological Society dinosaur-history volume; chapter 2 (the Brachiosaurus revision) was in JVP; chapter 3 (the Xenoposeidon description) was in Palaeontology; chapter 4 (the [...]