Scientists have found ancient fleas from the Jurassic and Cretaceous periods. Some are nearly an inch long — compare to modern fleas that top out around half that size — and the fleas seem to be adapted to biting through the hides of dinosaurs.
Here you can see a lump of rock with embedded fossils of bird bones trapped in the matrix. Below the rock are 3D printed models of those same fossils, created by paleontologist Brett Nachman. Other scientists captured the fossils inside the rock using CT scans that can see through the stone with the help of x-rays.
Last year, journalist Charles Choi wrote about the massive backlog of fossils in storage at most museums and suggested the possibility of using this kind of technology to study fossils that might not otherwise ever be removed from the hard matrix. Now, Charles is writing about people like Nachman who are doing just that — using technology to get at fossils that are too labor intensive to study.
Here's a weird, great geological feature I spotted yesterday while out hiking in rural Oklahoma. We were out in a flat, flat plan that was dotted with a few tall, angular sandstone mounds and narrow sandstone canyons carved out by erosion. This rock was sticking out of the side of one of the mounds. It was the only place we saw anything like these vertical, tube-like structures, which stretched from the ground up to probably about my shoulder.
When I posted this image on Twitter yesterday, several people suggested that the tubes might be skolithos — tube-shaped fossils that were probably made by some kind of ancient worm creature and turn up sometimes in sandstones. While the pictures on Wikipedia don't look very similar to what I saw, there are apparently lots of different forms these things (and similar tube fossils) can take.
Zigong Dinosaurs World Science & Technology Co.,Ltd. makes, as you can probably guess from the name, animatronic dinosaurs. Which, for some reason, they attempt to sell via spam email marketing. We at BoingBoing have gotten spam like this before, from other manufacturers in the surprisingly robust Chinese animatronic dinosaur industry. What made this particular email stand out to me, though, was the above picture, of an animatronic Glyptodont covered in fur.
Now, I'd seen Glyptodonts before, but the reconstructions that I remember came across more as giant armadillos, as opposed to the huge beaver with a shell on its back that you see here. So I contacted Brian Switek, my favorite dinosaur blogger, to ask him which image of the Glyptodont is the correct one.
His response: They both are.
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The ocean has not always met the land at the same place it does today. In fact, during Ice Ages, when more of Earth's water was trapped in glaciers, large swaths of what is now the Atlantic Ocean were dry ground. Things died there. In some cases, they fossilized. And when a big storm like Sandy hits, those bits of fossils can get broken out of the stones they're embedded in and washed up on our modern shores.
In this video, paleontologist Carl Mehling wanders Long Island's Rockaway Beach looking for fossils unearthed by Superstorm Sandy. It's a great video — and a handy "how to" as Mehling explains the basics of beach-based fossil hunting and how to tell the really old dead things from the simply dead things.
Via Mindy Weisberger
With their big, bitey teeth and teeny, ineffectual arms, it can be difficult to picture how Tyrannosaurus Rex actually managed to eat anything. After all, all of our personal experience with eating involves an awful lot of gripping with the forearms. Some new research, takes a stab at understanding T. Rex table manners. The results are pretty neat — and they highlight the similarities between dinosaurs and birds — but I want to make a bit of a bigger deal out of the methodology.
Several times on this blog, we've talked about the importance of the vast archives of archaeological and paleontological specimens that are sitting around in storage at museums and universities. Some of these things have never even been removed from the matrix of burlap and plaster used to secure them for shipping. Some have sat there for decades, enjoying only a cursory glance from researchers. But when scientists finally start sifting through these unseen specimens, they often find fascinating things.
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At The Dinosaur Tracking blog, Brian Switek is starting a cool, new series meant to highlight the lesser-known dinosaurs that the public as long ignored. Sure, it's a bit easier to pronounce Tyrannosaurus, but Agujaceratops and Zalmoxes still deserve their 15 minutes of fame.
The alphabetical series kicks off today with the aforementioned Agujaceratops. Found in Texas, Agujaceratops is distinctly different, in several ways, from its cousins that have been found in the northern part of North America. In fact, writes Switek, Agujaceratops is so different, that it's making paleontologists reconsider ancient North American geography.
At the species and genus levels, the southern dinosaurs are different. The big question is, why? Paleontologists know that a shallow, vanished seaway separated dinosaurs on eastern and western subcontinents for millions of years, but on that western subcontinent called Laramidia, there was apparently some other kind of barrier that isolated northern and southern dinosaur populations.
The hypothesis relies on basic evolutionary theory. Isolate populations of an ancestor species in different regions, and through factors such as natural selection and genetic drift, those populations will evolve in different ways. The fact that Agujaceratops, Kosmoceratops and Utahceratops are so different from Chasmosaurus and other northern cousins are a sign that such a barrier was in place. No one has found it yet, though, and a great deal of work remains to be done on whether all these dinosaurs were really contemporaries or reveal a much more complex evolutionary pattern. As these investigations continue, though, Agujaceratops will continue to play an important role as a symbol of isolation and evolution.
Follow along with the Dinosaur Alphabet at the Dinosaur Tracking blog
NOVA scienceNOW, David Pogue walks the streets of San Francisco in Neanderthal drag. Above, a actual clip from the upcoming hour, "What Makes Us Human?," in which the tech writer turned PBS host explores our relationship with Neanderthals, after being made up like a Neanderthal based on instructions from Daniel Lieberman, a paleoanthropologist from Harvard. Oh, to have been a fly on the wall during that shoot!