My talk (Taylor and Wedel 2019) from this year’s SVPCA is up!

The talks were not recorded live (at least, if they were, it’s a closely guarded secret). But while it was fresh in my mind, I did a screencast of my own, and posted it on YouTube (CC By). I had to learn how to do this for my 1PVC presentation on vertebral orientation, and it’s surprisingly straightforward on a Mac, so I’ve struck while the iron is hot.

For the conference, I spoke very quickly and omitted some details to squeeze the talk into a 20-minute slot. In this version, I go a bit slower and make some effort to ensure it’s intelligible to an intelligent layman. That’s why it runs closer to half an hour. I hope you’ll find it worth your time.



We’re just back from an excellent SVPCA on the Isle of Wight. We’ll write more about it, but this time I just want to draw attention to a neat find. During a bit of down time, Matt and Vicki were wandering around West Cowes (the town where the scientific sessions were held), when they stumbled across a place called That Shop. Intrigued by all the Lego figures in the window, they went in, and Matt found a small section of fossils. Including … an Iguanodon pelvis, supposedly certified as such by the Dinosaur Isle museum.


Here it is: I imagine that whoever classified it read this elongate concave surface as part of the acetabulum. Matt’s hypothesis is that they mistook it for a sacral vertebra and that became “pelvis” via over-simplification.

It’s about 18 cm in a straight line across the widest part, or 20 cm around the curve.

Here is an actual documentary record of Matt’s moment of discovery:

Yep, you got it! It’s a sauropod vertebra! (Matt would never have spent good money on a stinkin’ appendicular element of a stinkin’ ornithopod.)

Specifically, it’s the bottom half of the front part of the centrum of a dorsal vertebra:

Eucamerotus” dorsal vertebra NHMUK PV R88 in right lateral and anterior views. Non-faded portions show the location of the Wedel Specimen. Modified from Hulke (1880: plate IV).

In these photos, we’re looking down into it more or less directly dorsal view, with anterior to the left. Click through the photos, and — once you know what you’re looking at — you can clearly see the pneumatic spaces: nice patches of finished bone lining the camellae, with trabecular bone in between.

Clearly there’s nowhere near enough of this to say what it is with any certainty. But our best guess is that it seems compatible with a titanosauriform identity, quite possibly in same space as the various Wealden sauropod dorsals that have been assigned to Ornithopsis or Eucamerotus.


  • Hulke, J. W.  1880.  Supplementary Note on the Vertebræ of Ornithopsis, Seeley, = Eucamerotous, Hulke. Quarterly Journal of the Geological Society 36:31–35.  doi:10.1144/GSL.JGS.1880.036.01-04.06

The polished face of the block, 1.5″ tungsten cube for scale. The bowtie shapes are the two biconcave vertebral centra.

It is pretty darned satisfying to be heading to the Isle of Wight for SVPCA next week. My only other visit was in the spring of 2004, when Vicki and I were in England on a spring break vacation/research trip. We spent a night at a bed and breakfast in Sandown and visited the Dinosaur Isle museum, where I got to see “Angloposeidon” and the Barnes High brachiosaur in person.

My most tangible memento of that trip is this cut and polished block with two vertebral centra from what I’m guessing is an ichthyosaur. It has a little story.

While we were at Dinosaur Isle I got to see another cut-and-polished specimen, the partial titanosauriform centrum shown above (and memorialized on the blog way back in 2008, when SV-POW! was about 6 months old). I’ve seen others since (like this one), but that was the first such specimen I’d seen in person, and it captured my imagination.

Vicki and I took a bus to get back to the ferry from Sandown, and somewhere in the island interior there was a bus stop at a small collection of buildings, maybe just two or three? One was a rock shop, and I really wanted to pop in and see what they had. The bus driver warned me, sternly, that the bus would be stopped for precisely two minutes, and that if I was not back on board in 120 seconds I’d be left behind.

So I sprinted inside the shop, found this block behind the counter, paid, and dashed back to the bus, arriving with a few seconds to spare. For four years it sat on my desk or on our mantle, then it got boxed up with a bunch of other natural history stuff and was buried in a closet for a decade. I didn’t get around to unboxing it until January, 2018 — you can spot it in the second photo down in this post. Since then it’s lived on my desk at work, or on a bookshelf adjacent to my desk.

One of the things I love best about it is that even in these somewhat weathered, almost certainly non-diagnostic shards of adequacy, the internal structure is beautifully preserved.

This chunk of rock embodies a lot of time — developmental time for the ichthyosaur, to grow such beautiful bones; deep time for these vertebrae, voyaging to us across millions of years; and personal time. In the fifteen-and-a-half years since my last visit to the Isle of Wight, I’ve gone from being a grad student to a professor at a med school (which I did not see coming back in 2004), and Mike and I have gone from being pen pals to frequent coauthors and co-travelers (and we’re still pen pals).

I think it’s only right that I pressure Mike into stopping at that rock shop, if it’s still there, so I can find a companion piece. Stay tuned.

As Mike noted in the last post, many (all?) of the talks from SVPCA 2018 are up on YouTube. Apparently this has been the case for a long time, maybe most of the past year, and I just didn’t know. But I’m glad I do now, because I can encourage you to take 14 minutes and watch Jessie Atterholt’s talk on air spaces inside the neural canal in birds and other archosaurs:

This will not only be interesting in itself — assuming you are interested in pneumaticity, animals, or just how weird the natural world can be at times — but it will be good homework for the Atterholt and Wedel talk at this year’s SVPCA. That talk, also to be delivered by Jessie, will be on a different weird thing about archosaur neural canals, and one that neither of us have yapped about yet on social media.

Here’s the full rundown of talks by SV-POW!sketeers and affiliates at this year’s SVPCA:

Thursday, September 12

  • 11:00-11:20 – Vicki Wedel, “Validating the use of Dental Cementum Increment Analysis to determine season-at-death in humans and other mammals”
  • 11:20-11:40 – Matt Wedel, “How to make new discoveries in (human) anatomy”

Friday, September 13

  • 10:10-10:30 – Mike Taylor and Matt Wedel, “The past, present and future of Jensen’s Big Three sauropods”
  • 15:00-15:20 – Jessie Atterholt and Matt Wedel, “Neural canal ridges: a novel osteological correlate of post-cranial neurology in dinosaurs”

Presumably most or all of these will become PeerJ Preprints in time, just like Mike’s and my presentations from SVPCA 2017 (link, link) and Jessie’s presentation last year (link). I haven’t heard anything yet about livestreaming or recording of the talks this year — fingers firmly crossed.

Anyway, we look forward to seeing at least some of you at SVPCA or at other points on our trip to England, and to having more stuff to talk about here in the near future. Stay tuned!

Sorry to you all for the recent radio-silence here on SV-POW!. Matt and I are hard at work preparing our presentations for SVPCA 2019, which will take place on the Isle of Wight next week. Delightfully, not only will Matt be joining us this year, but so will his wife, forensic anthropologist celebre Vicki; and their son London.

Exterior of the Dinosaur Isle museum, Sandown, Isle of Wight, last known resting place of the vertebra known as “Angloposeidon” and the venue for the SVPCA 2019 drinks reception.

Anyway, since we have effectively prorogued SV-POW! until after the conference, I’d like to leave you with the delightful fact that the whole of last year’s conference is freely available to watch on YouTube.

We’ll hope to see some of you next week on the Isle of Wight — do come up and say hi, we always like to meet our readers. I hope that this year’s talks will also be streamed and recorded, but I don’t know what plans exist.

The stupidest head

August 21, 2019

Left: Homo sapiens, head, neck and upper trunk in right lateral view (unprepared specimen). Right: Camarasaurus sp., skull in left lateral view. Photograph at the Natural History Museum of Utah, Salt Lake City, Utah. 2016.

First, a short personal backstory. Vicki’s and my extended families both live mostly in Oklahoma and Kansas, so they only get to see our son, London, at the holidays or at infrequent mid-year visits. Starting when London was five, every year I’ve made a photo book of his adventures through the year to give as Christmas presents to all of our relatives. These have also become cherished mementos for the three of us here in Cali. The service I use is Shutterfly, and they have yet to mis-print a book or screw up an order over the space of a decade. So I feel confident recommending them.

About 3-4 times a year I get an offer from Shutterfly for a free 8×8 hardcover photo book, usually like 20 to 26 pages unless I want to pay a little extra. Sometimes if I’ve just taken a vacation or have some other batch of good photos, I’ll burn the free photo book capturing that, but most of time I use the freebies to memorialize my talks. Here are two I had to hand in my office when I got the idea for this post. On the left is my 2014 SVPCA talk on supramedullary airways in birds and dinos, and on the right is Jessie Atterholt’s talk from last year’s SVPCA on the same topic (with loads more data).

The 2014 talk was the first one I turned into a book, and I put it together right after the conference when the logic and cadence of the talk was still in my mind. My talks tend to be very text-light, and the slides basically act as memory triggers for me to riff on at the podium. So for that book I deliberately tried to capture the essence of what I said about each slide, hoping that it would make it easier to write the paper when the time came (and the time is, er, now, since Jessie has written the first draft already).

I also tend to use a lot of slides compared to most other folks, so I doubled up the slides on each page to fit the talk into the confines of a free book. For the recent Haplocanthosaurus presentation at the 1st Palaeontological Virtual Congress (available here), I put a lot of text on the slides to make them self-explanatory, and used fewer slides. So when I made that talk into a book, I just made each slide a full page, with no captions.

Photo books made from talks 3

You know who appreciates these things? Anyone who wants to hear about your work, but doesn’t want to sit through a 15-minute slide presentation. It’s so much more natural and inviting to hand someone a book and say, “Here’s my talk, feel free to look through it or borrow it for a few days”. It’s like taking some 8×11 printouts of your poster to a conference: making born-digital presentations into physical artifacts may feel old-fashioned, but those artifacts are amazingly useful when you’re talking with other primates in meatspace.

You know who else appreciates these things? Coauthors who couldn’t be at the conference. So occasionally if I have a free book to burn, I’ll make an extra copy of one I already have incarnate, and send it to a coauthor as a gift.

So I recommend doing this. I don’t know how much stuff you have to order from Shutterfly to get free book offers now and then (maybe not very much since they do make some back on shipping), but I know how much your first book will cost if you’re not a Shutterfly user: nothing. The first five new users who use the link below will get a free 8×8 photo book. I’ll get one, too, for bringing people on board, but it’s not a cult, you can leave anytime. I wouldn’t, though, this stuff is too useful.

Here’s that link: