Sunday, February 27, 2011
Continuing the redoing of old 2008 stuff...
This was originally labeled 'Anatosaurus', but that genus is now thought to probably be Edmontosaurus.
This is a hadrosaur from the very late Late Cretaceous of North America. It was one of the last dinosaurs (barring birds), probably a common food item for the more famous Tyrannosaurus.
Posted by Vultur at 9:32 PM
Tuesday, November 9, 2010
Friday, September 24, 2010
ART Evolved Blog (a very cool paleo-art blog) is holding a pink dinosaur challenge for cancer. Every picture of a pink dinosaur submitted, $1 goes to the Canadian Cancer Society; their goal is to raise $500.
Here's the picture I sent in.
Disclaimer: I don't really think sauropod infants were Pepto-Bismol-colored...
Sunday, September 19, 2010
Again with the organisms whose sizes were formerly overestimated -- early estimates put Hainosaurus as high as 17 meters long. It's now been downscaled to 12.2 meters.
However, as the picture shows (12-meter Hainosaurus compared to 1.75-meter human) that's still very big.
Reference: Lindgren, Johan. The first record of Hainosaurus (Reptilia: Mosasauridae) from Sweden. Journal of Paleontology 2005 79: 1157-1165
Wednesday, September 8, 2010
Generally, the first thing everyone wants to know about a new dinosaur (or giant pterosaur, crocodilian, whatever) is how big it is. Sometimes the initial estimates are too big, occasionally unrealistically so - I'm looking at you, 18-meter-wingspan Quetzalcoatlus!
Then the estimates have to be downsized. Often, when I'm reading about an animal, I'm thinking "Darn! It wasn't that big after all." It's kind of disillusioning. And I'm sure others feel that way too.
But! They're still FRICKIN' HUGE. And this series of blog posts will show that.
Today: Deinosuchus. Formerly estimated at around 15 meters, from a skull reconstructed to be 1.8 m long; now estimated at around 10 meters from a skull more confidently 1.31 m long. (This is not the species' maximum size, but larger specimens are very fragmentary, so size can't be well determined.)
This is an American alligator Alligator mississippiensis (source: USFWS), scaled to the size of a Deinosuchus with 1.31 meter skull length. Human silhouette is 1.75 meters.
...pretty impressive. And they got bigger, too.
(For that matter, what are the chances that the largest individuals were among the relatively few that got fossilized, then discovered?)