For those who haven’t seen, recently a new ‘giant raptor from Hell’ was discovered! As a cousin to the infamous Velociraptor, it represents one of the largest members of the group known as Dromaeosauridae, which were the close relatives of early birds. The new giant raptor lived alongside other beasties like T. rex and comes from the latest Cretaceous Hell Creek Formation, where it would have been a mid-tier ambush predator. It comes fully equipped with the largest ‘sickle’ claws currently known from these guys, making it one helluva lethal killing machine. Perhaps most importantly, the new species, named Dakotaraptor is the largest known ‘raptor’ that possesses unequivocal evidence of a ‘true’ wing formed from feathers. Anyway, being a greedy little grad student, I wrote about the story for Discover Magazine and also for EarthTouch, so take your pick!
This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1250
It rises from the dark waters like some behemoth from the deep, and lets out a blood-curdling roar. It’s feeding time. One of the most iconic scenes from Jurassic Park III is where the long-snouted, sail-backed giant theropod dinosaur Spinosaurus emerges from underwater to try, yet again, to eat our beleaguered rabble of misfortunates. It’s always been the way these dinosaurs have been portrayed, including one of Spinosaurus’ close cousins Baryonyx from the UK. With their long snouts, bulbous tips, and pointy teeth, it’s often been thought that spinosaurid dinosaurs were quite a lot like modern crocodiles. But how much of this is true?
This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1138
For some time now, there has been much debate about whether our beloved dinosaur, Triceratops, is a distinct species, or a younger version of a bigger ceratopsian, Torosaurus – the great Toroceratops’ debate. Proponents of both sides of the argument have made detailed quantitative and qualitative points, and there doesn’t really seem to have been any resolution. Check out the video below for a great discussion of the issues, or this link or this link.
This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1093
For some years now, Mary Schweitzer and her team have been researching the idea that organic molecules can be preserved for millions of years, specifically within dinosaurs. They have used a plethora of chemical and biotechnological techniques to demonstrate that, within animals like Tyrannosaurus rex, it is possible to find the residue of structures such as blood vessels and even proteins. Naturally, her research has been met with a whole wad of stiff resistance from the scientific community, seemingly for no other reason than “We don’t like the sound of that..”. Scientific rigour ftw!
This was originally posted at: http://blogs.egu.eu/palaeoblog/?p=1037
Let’s go meta. Recently, ecologist extraordinaire Dr. Jacquelyn Gill (or is it Professor cos of that weird American system?) wrote a wonderful review article on the extinctions that affected many large mammal species during the last 50-10,000 years. This period is known as the Quaternary, and was a time when ice ages were running rife between warmer periods, and herds of enigmatic mammals roamed the steppes. It’s also a time when many wonderful animals, such as mammoths, disappeared from our planet forever, apart from rare fuzzy sightings from drunk Russians that later turn out to be a bear, or nothing. The result is that although we have a spectacular range of mammals decorating our landscapes today, this is but a shadow of mammals’ true splendour back just a few thousand years.