EGU Blogs

Palaeontology

Dinosaur cells identified with possible dino-DNA!

February 12, 2013

The discovery of extractable dinosaur DNA is many a scientist’s dream. The idea of finding DNA within extinct animals has an air of mystery and discovery that is just ridiculously appealing, whether you’re 5, 50, a teacher, palaeontologist, or cab driver. I think this is part of human nature, where we always seem to have a longing for what we can’t have, and one thing we’ll never have are the things that have been lost to ages long past.

All you need is an eccentric billionaire.. Or maybe just a team of intrepid scientists! Source.

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Theropod dinosaurs were waaay more diverse than previously thought

February 12, 2013

Dinosaurs! What image sprang to your mind then? There’s a reasonable chance, I’d hazard, that your brain just conjured an image of ferocious Tyrannosaurus rex, a nimble and intelligent Velociraptor mongoliensis, or any one of the other meat-eating theropods, notoriously infamous thanks to a certain eccentric millionaire with a passion for splicing genes. These two species of dinosaur are pretty well known to both pop culture and science, and have many fantastic skeletons to represent their iconic names. But not all of our dinosaury friends are so lucky. Theropods (the mostly meat-eating ones, including modern birds) often shed teeth during feeding, or through ‘playing’ with each other or even possible displays of dominance during periods of courtship (much like an average night at most clubs). Either way, it means that many of the fossil remnants from the Mesozoic era we have of extinct theropods are actually just teeth!

What I guess people think of when they think of dinosaurs. Source.

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Gender confusion in Confuciusornis? Not any more!

February 1, 2013

Among the many issues with the fossil record is the case of gender identification. In modern organisms, it is usually pretty easy to tell which members of a particular species are the males and which are the females. This can either be through consistently perving on them to figure it out during copulation, or some aspect of their morphology, such as antlers, or you know, a penis or vagina. When it comes to fossil though, we often don’t find these typical gender-distinctive aspects of morphology preserved, as they are usually lost in one form or another to the ravages of time and the process of fossilisation.

I don’t even.. #sexingadinosaur

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A new feathered dinosaur – worth getting ruffled for?

January 31, 2013

Two new feathered dinosaur articles appeared in the latest edition of Nature Communications; one on gender identification in a well-known theropod (the meat noshing ones), and the subject of a forthcoming blog post, and another on a new feathered fiend from, surprise surprise, China.

I normally really don’t like writing about theropods, especially of the feathered variety, as it just seems like I’m jumping on the bandwagon that they were awesome and every aspect of them needs extensive media coverage. Ok, yeah, they can be pretty cool. But only, for me, in the context of the larger evolutionary patterns that they can reveal to us, such as the evolution of feathers and flight. Each new fossil doesn’t exactly transform our knowledge of this, but they do help us to refine our theories to a certain extent; whether or not that’s worthy of excessive media coverage and Nature publications, is not my judgement to make (no, it’s not).

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