Revising a poster

September 14, 2017

Yesterday, Matt and I showed our posters in a two-hour session at SVPCA, as two of about thirty. It was actually a hugely positive experience, and it’s left me wondering whether to prefer posters to talks at future conferences — one of us will write about it separately

My poster (left) and Matt’s (right), in their natural environment. Phil Mannion (Mammalia: PrimatesHomoninae) for scale.

But it was eye-opening to road-test what I’d thought was a pretty good poster with real visitors. I quickly realised that the “Biconcavoposeidon” poster was missing two important things.

First, there’s an insert that shows schematic views of amphiplatyan, opisthocoelous, procoelous and amphicoelous vertebra. But it should show two or three of each kind of vertebra, in articulation, so that the insert shows not only the isolated shapes, but how they fit together (or how, in the case of biconcave centra, they do not fit together.)

The second problem: another insert shows — again in schematic form — how vertebrae articulate in amphibians and mammals. But I really needed a third part of that figure showing how the articulation works in birds. I kept needing to point to such an illustration, and I didn’t have one.

But all is not lost: I am not bound to an imperfect poster for all time. The poster is published as part of a PeerJ Preprint, and I can revise that preprint as often as I like. Which means I can revise the poster.

And that is what I plan to do. I’ll make both of the changes described above, and update the published version. The question then becomes: in my publications list, where the poster is explicitly tied to the presentation at SVPCA 2017, should I continue to point to the version that I actually used at the meeting? I am inclined to think so.

But wait: there’s more.

It turned out at the conference that Matt was right when he advised me that I should have made the anaglyph bigger, and placed it at the top of the poster, at eye-level. Instead, I had a sequence of visitors who had to painfully kneel down and peer myopically at the small, low-down version that I used. (Or, more often, they didn’t bother looking at the anaglyph at all — which is a shame, because it’s really informative.)

(Seriously, folks: buy yourself some dirt-cheap red/cyan glasses, and start making use of these incredibly useful, and very simple-to-make, visuals. Everyone who looked at the anaglyph, without exception, was startled at how much more informative it was than the regular image.)

But I am not going to re-organise the poster along those lines in the forthcoming revision. Why not? Because I don’t expect to present the new version at a conference, where eye-level is an issue. Instead, I expect it to stand as a research artefact in its own right, to be viewed on screens or printouts — and for those purposes, the present composition is better. That’s true especially because most people downloading the poster won’t have the red/cyan glasses necessary to view what would be centrepiece of the putative revision; but when presenting the poster at a conference, I can provide the glasses (and I did).

So I think I have now landed on the notion that a poster as a research artefact is a fundamentally different thing from a poster for presentation at a conference. I didn’t see that coming.


If you don’t get to give a talk at a meeting, you get bumped down to a poster. That’s what’s happened to Matt, Darren and me at this year’s SVPCA, which is coming up next week. My poster is about a weird specimen that Matt and I have been informally calling “Biconcavoposeidon” (which I remind you is not a formal taxonomic name).

Here it is, for those of you who won’t be at the meeting (or who just want a preview):

But wait — there’s more. The poster is now also formally published (Taylor and Wedel 2017) as part of the PeerJ preprint containing the conference abstract. It has a DOI and everything. I’m happy enough about it that I’m now citing it in my CV.

Do scientific posters usually get published? Well, no. But why not? I can’t offhand think of a single example of a published poster, though there must be some out there. They are, after all, legitimate research artifacts, and typically contain more information than published abstracts. So I’m happy to violate that norm.

Folks: it’s 2017. Publish your posters.


  • Taylor, Michael P., and Mathew J. Wedel. 2017. A unique Morrison-Formation sauropod specimen with biconcave dorsal vertebrae. p. 78 in: Abstract Volume: The 65th Symposium on Vertebrate Palaeontology and Comparative Anatomy & The 26th Symposium on Palaeontological Preparation and Conservation. University of Birmingham: 12th–15th September 2017. 79 pp. PeerJ preprint 3144v2. doi:10.7287/peerj.preprints.3144v2/supp-1


August 15, 2017

Here is a fascinating sequence of five consecutive posterior dorsal vertebra — AMNH FARB 291 from the”Big Bone Room” at the AMNH:

AMNH FARB 291, five consecutive posterior dorsal vertebrae of a probably brachiosaurid sauropod, in right lateral view. The vertebrae are embedded in a plaster block, which has been desaturated in this image.

Matt and I first saw this specimen back in February 2009, when we were mostly there to look at Apatosarusminimus (and then again in 2012). As soon as our eyes lit on it, we couldn’t help but be captivated by its bizarre biconcave centra. We immediately started flippantly referring to it as “Biconcavoposeidon” — the ugliest name we could come up with — and in our subsequent discussions the name has stuck (often abbreviated to “BCP”).

  • Taxonomic note: for avoidance of doubt, “Biconcavoposeidon” is not and will never be a formal taxonomic name, only an informal specimen nickname. If at some future point we conclude that this specimen represents a new taxon, and name it, we will definitely not use the name “Biconcavoposeidon”. If you ever use the name, please do not set it in italics.

As you can see in this front view, the specimen is sheared: the upper part of the vertebrae have been displaced to their left (which is the right as we see it in this image):

AMNH FARB 291, most anterior of five consecutive posterior dorsal vertebrae of a probably brachiosaurid sauropod, in anterior view.

Apart from the shearing, though, and the truncation of the neural spines shortly above the transverse processes, the specimen is in pretty good nick. Crucially, it’s not been “restored” in plaster to conceal what is and is not real bone — unlike many specimens of that era. It came out of the Bone Cabin quarry in 1898, back when scientific information was routinely discarded in order to obtain a more beautiful-looking specimen.

This is the specimen that I’ll be presenting at SVPCA this year — though only as a poster, unfortunately: there’s no talk for me, Matt or Darren this year. We’ve posted our abstract (including the illustration above) to the nascent PeerJ collection for SVPCA 2017, and we’re looking forward to seeing more of the materials from that conference — abstracts, then manuscripts, then papers — appearing in the collection.

So far as we know, there’s no other sauropod specimen with biconcave posterior dorsal vertebrae. (And, no, Amphicoelias is not an exception, despite its name.) But have we missed any?