March 22, 2015
We adopted a couple of 6-week-old box turtles today.
They are Three-Toed Box Turtles, Terrapene carolina triunguis, and they are insanely adorable.
This one seemed oddly familiar…had I encountered it before?
UPDATE: The last few images here are an homage to Mike’s Gilmore sequence from slide 96 in our 2012 SVPCA talk on Apatosarus minimus (link). I would have linked to it sooner, but I couldn’t find the right blog post. Because there wasn’t one. Memory!
February 13, 2015
According to Rare Historical Photos from the 1860s to the 1960s, this is the iceberg that sank the Titanic:
Clearly this was no iceberg, but a gigantic Apatosaurus vertebra, most of it hidden under water. Here is an artist’s impression:
They get everywhere, don’t they?
October 17, 2014
This arrived on my Facebook wall, courtesy of Raul Diaz. For a split second I really did think the one second from the right was an older-model Carnegie Brachiosaurus toy.
I assume that, like me, you have people in your life that you don’t correspond with very often, and when you remember that they exist, it just makes you happy. Like, yeah, there’s a slightly higher chance that our species is going to make it, just because that person is out there in the world, doing what they do. Raul is in that category for me. He’s a herpetologist, but that term doesn’t really do him justice; Raul is into herps like Genghis Khan was into real estate acquisition.
Now he’s an Assistant Professor at La Sierra University and also teaches at the Loma Linda University School of Medicine (Raul, that is, not Genghis Khan). But I’ve known him since he was an undergrad. He was a student in one of my discussion sections for the evolution course at Berkeley. I had a tradition in all the classes I taught as a grad student: on the last class meeting I’d have people bring food and we’d have a little potluck. Raul showed up with a six-pack of Pabst Blue Ribbon. No-one else was partaking, so Raul and I spent 50 minutes drinking PBR and talking about descent with modification. Good times.
Oh, and the “tiny brontosauruses” are actually coatis, genus Nasua, raccoon relatives that range from the southwestern US to northern South America. Surprisingly, I don’t think that Darren has ever covered coatis in detail at TetZoo; maybe this will spur him into action.
August 21, 2014
I have often argued that given their long hindlimbs, massive tail-bases, and posteriorly-located centers of mass, diplodocids were basically bipeds whose forelimbs happened to reach the ground. I decided to see what that might look like.
Okay, now obviously I know that there are no trackways showing sauropods actually getting around like this. It’s just a thought experiment. But given how close the center of mass of Diplodocus is to the acetabulum, I’ll bet that this pose was achievable in life. If diplodocids had just pushed the CM a few cm farther back, they might have dispensed with forelimbs entirely, or done something different with them, like re-evolved grasping hands.
Image modified from Gilmore (1932: plate 6). Here’s a horizontal-necked bipedal Diplodocus and the original pose:
UPDATE the next day: I had forgotten that Niroot had already done a bipedal Apatosaurus, and a much more convincing one than mine. Go see it.
UPDATE the next week: Well, heck. Looks like the primary value of this post was so that people would remind me of all the other places the same idea has already been covered better. As you can see from the comment thread, Mike blogged about this at the WWD site, Scott Hartman drew it, and Heinrich Mallison showed that it was plausible. Sheesh, I suck.
- Gilmore, C. W. 1932. On a newly mounted skeleton of Diplodocus in the United States National Museum. Proceedings of the United States National Museum 81, 1-21.
March 9, 2014
Although it would be nice to think that our site views have octupled in the last day because of Mike’s fine and funny posts about what search terms bring people to SV-POW!, the real reason is that we were blessed by incoming links from both pages of this Cracked.com article.
Now, as any person who has ever accomplished anything whatsoever knows, it is super-important to avoid Cracked.com or you’ll still be up 23 hours from now reading, “6 Mind-Blowing Ways that Comedy Writers are Secretly Destroying Your Productivity”. (I’m kidding, that article doesn’t really exist–but if it did, I’m sure it would consist entirely of descriptions and links to six other Cracked articles). But that’s only true because most of the articles there hit the sweet spot at the intersection of funny, surprisingly informative, mercifully short, and well-written. Crack.com would be a more honest URL, but I assume it was taken.
Anyway, I’d like to return the favor, so here’s a list of the 6 SV-POW! Posts Most Likely to Blow the Minds of Cracked.com Readers. If I missed some goodies or recommended some stinkers, let me know–the comment thread is open.
Who doesn’t want to read about the bizarre real-world mystery surrounding what might have been the world’s largest dinosaur? If you’re not sold, consider that the picture above shows a single vertebra that was–or at least might have been–seven and a half feet tall.
The mercifully short version of this much longer post, in which I consider the consequences of the world’s largest animals having the world’s longest cells.
Weapons-grade anatomical pedantry.
Yes, there is a ship in Star Wars: The Clone Wars that is basically a flying dinosaur vertebra. It took us about five weeks to unravel that story–the post linked above has links to the rest of the saga.
Our original linkbait post. Don’t miss the shorter follow-up with more critters.
A deliberately goofy post in which I wax poetic about the largest predatory dinosaur claws ever discovered.
So, that was a big pile of superlatives and Star Wars. If you’re hungry for more substantial fare, you might start with our Tutorials page or our Things to Make and Do series on dissecting and skeletonizing modern animals. We also blog a lot about the evils of obstructive publishers and the need for open access to the scientific literature–you can find those posts on our Shiny Digital Future page.
A parting shot in my desperate quest for attention: this Star Wars ship flying around in the background in Firefly and Serenity is at least partly my fault–full story here. Oh, and my co-blogger Mike Taylor has written an insightful and affordable book about Doctor Who; read about it here.
March 1, 2014
Christine Argot of the MNHN, Paris, drew our attention to this wonderful old photo (from here, original caption reproduced below):
I found a different version of what seems to be the same photo (greyscaled, lower resolution, but showing more of the surrounding area) here:
What we have here is a truly bizarre mount of Diplodocus — almost certainly one of the casts of the D. carnegii holotype CM 84 — with perfectly erect, parasagittal hind-limbs, but bizarrely everted elbows.
There are a few mysteries here.
First, where and when was this photo taken? Christine’s email described this as a “picture of a Diplodocus cast taken in St. Petersburg around 1920″, and the caption above seems to confirm that location; but then why is it copyright the Paleontological Museum, Moscow? Since the web-site in question is for a Swedish museum, it’s not forthcoming.
The second photo is from the web-site of the Borisyak Paleontological Institute in Moscow, but that site unfortunately provides no caption. The juxtaposition with two more modern Diplodocus-skeleton photos that are from its own gallery perhaps suggest that the modern mount shown in the more recent photographs is a re-pose of the old mount in the black-and white photo. If so, that might mean that the skeleton was actually in Moscow all along rather than St. Petersburg, or perhaps that it was moved from St. Petersburg to Moscow and remounted there.
Does anyone know? Has anyone out there visited the St. Petersburg museum recently and seen whether there is still a Diplodocus skeleton there? If so, is it still mounted in this bizarre way? Better yet, do you have photos?
The second question of course is why was this posture used? This pose makes no sense for several reasons — one of which is that even if Diplodocus could attain this posture it would only serve to leave the forefeet under the torso in the same position as erect forelimbs would have them. The pose only makes any kind of sense at all if you imagine the animal lowering its torso to drink; but given that it had a flexible six-meter-long neck, that hardly seems necessary.
Of course Diplodocus does have a history of odd postures: because of the completeness of the D. carnegii holotype, it became the subject of the Sauropod Posture Wars between Tornier, Hay and Holland in the early 20th Century. Both Tornier (1909) and Hay (1910) favoured a sprawling posture like that of lizards (see images above and below), and were soundly refuted by Holland
But the Tornier and Hay postures bear no relation to that of the mounted skeleton in the photographs above: they position the forefeet far lateral to the torso, and affect the hindlimbs as well as the forelimbs. So whatever the Russian mount was doing, I don’t think it can have been intended as a representation of the Tornier/Hay hypothesis.
But it gets even weirder. Christine tells me that “I’m aware of […] the tests that Holland performed on the Russian cast to get rid of the hypothesis suggesting a potential lizard-like posture. So I think that he would have never allowed such a posture for one of the casts he mounted himself.” Now I didn’t know that Holland had executed the mounting of this cast. Assuming that’s right, it makes it even more inexplicable that he would have allowed such a posture.
Or did he?
Christine’s email finishes by asking: “What do you think? do you think that somebody could have come behind Holland to change the position? do you know any colleague or publication who could mention this peculiar cast and comment its posture?”
Can anyone help?
- Hay, Oliver. P. 1910. On the manner of locomotion of the dinosaurs, especially Diplodocus, with remarks on the origin of birds. Proceedings of the Washington Academy of Sciences 12(1):1-25.
- Holland, W. J. 1910. A review of some recent criticisms of the restorations of sauropod dinosaurs existing in the museums of the United States, with special reference to that of Diplodocus carnegiei in the Carnegie museum. American Naturalist 44:259-283.
- Nieuwland, Ilja. 2010. The colossal stranger. Andrew Carnegie and Diplodocus intrude European Culture, 1904–1912. Endeavour 34(2):61-68.
- Tornier, Gustav. 1909. Wie war der Diplodocus carnegii wirklich gebaut? Sitzungsbericht der Gesellschaft naturforschender Freunde zu Berlin 4:193– 209.