Posts tagged dinosaurs
Posts tagged dinosaurs
Dave Hone writing on his Lost Worlds blog for The Guardian:
A few dinosaurs have previously been identified as apparently going from quadrupeds as juveniles to bipeds as adults, and the reverse, but a new paper documents detailed changes to the bones of a small herbivore called Psittcosaurus (the “parrot-lizard”, named for its beak) and demonstrates just how it may have undergone the shift.
And sometimes when people ask for commissions it turns into raptors going over the Niagara Falls in a barrel. WELP.
A few days ago I heard noises outside that sounded like the raptors from Jurassic Park. I mentioned this in chat, and one guy said: “WELP TIME TO COMMISSION ART OF A RAPTOR RIDING A BARREL OVER NIAGARA FALLS”…
…so I did. :D
This is literally the best thing.
As that one guy on the internet, I’m delighted that this came to be, and doubly delighted that I didn’t have to pay anything for it to.
New Series! The Pachyrhinosaurus lakustai dinosaur coin is the first in a 4-coin Prehistoric Creature glow-in-the-dark (photo-luminescent) series!
• For best effect, place the coin in sunlight, fluorescent, or incandescent light for 30 – 60 seconds then bring the coin into the dark to reveal the skeleton of the dinosaur!
You know when you were eight years old and imagined you ruled the entire world? This was legal tender in your empire.
If you read Dinotopia as a kid but haven’t for years and years, I have excellent news for you: it is every bit as magical as you remember it being. And if you never did, then you won’t regret doing so now.
Ed Yong of Discover Magazine's Not Exactly Rocket Science blog:
The eleven specimens of Archaeopteryx are some of the most iconic and captivating fossils in existence. The fingers end in claws, the tail is long and bony, and the head – arched back in the throes of death – contains toothed jaws. But the splayed arms are lined with the faint but unmistakeable outlines of feathers. This was an animal halfway between a small flesh-eating dinosaur and a modern bird. In fact, Archaeopteryx is widely heralded as the first bird, occupying a pivotal position in the origins of this group.
But Xing Xu from Linyi University thinks that this first bird was nothing of the sort. The Chinese palaeontologist, who has found one fascinating dinosaur after another, has identified a new species called Xiaotingia that threatens to oust Archaeopteryx from its position.
By comparing Xiaotingia’s features with those of Archaeopteryx and other related birds and dinosaurs, Xu has drawn up a new family tree. In it, Archaeopteryx sits with Xiaotingia among the deinonychosaurs, a celebrity-filled group of small, predatory dinosaurs that includes Deinonychus and Velociraptor. The lineage that led to modern birds perches on a different branch of the tree.
This doesn’t change the fact that birds evolved from dinosaurs – it merely relegates Archaeopteryx to the sidelines of that process. In its place, species like Epidexipteryx and Epidendrosaurus take up the mantle of earliest birds. It is a tentative revision but a bold one (Xu himself admits that the new family tree is statistically weak). …
Meanwhile, others have noted that Archaeopteryx has many features that are only found among the deinonychosaurs. For example, they share a distinctive hip bone, and they both have a large hole above their noses (the “premaxillary fenestra”) that other birds and dinosaurs lack. Any many of the features that supposedly characterise Archaeopteryx and other birds, such as feathers, a wishbone and long powerful forearms, are also found in deinonychosaurs.
But Gerald Mayr, who studies fossil birds at Germany’s Sneckenburg Museum, is unimpressed with the new discovery. “I fear that it is a bit hyped and that the conclusions are not as novel as the authors claim,” he says. Mayr is one of several palaeontologists who think that the deinonychosaurs are actually birds themselves. According to him, they’re flightless members of a group that includes Archaeopteryx and modern birds, like smaller extinct versions of today’s ostriches and emus.
The problem is that all of these reconstructions are weak. Mayr admitted as much about his own model back in 2006, and Xu says that his new family tree only has “tentative statistical support”.
'Ili: EVERYTHING I KNOW IS A LIE
Colin: At least birds are still dinosaurs.
Colin: THAT’S WHAT’S IMPORTANT
We make 3d models out of old vinyl records. We have 20 designs, from Ants to Velociraptor to Pteranodon. We ship out a vinyl record, you get to pop out the pieces and assemble the model.
This is a rad idea, and the final result looks fantastic. Click the photo to head to their Kickstarter page and fund the hell out of this.