EGU Blogs

Canonical Variates Analysis

It’s a ruminant snout, deer

It’s a ruminant snout, deer

So the last couple of posts have been a bit of an eclectic mix of open access-y stuff and some of the research I’ve been doing on crocodiles as part of my PhD. This one is gonna be a bit of a change, about research that I recently published following my masters project a couple of years back. Weirdly, this was on the snouts of ruminants, and what they can tell us about their ecology.

The whole idea behind the project was to test previous research – to what degree can we use the different snout shapes exhibited by ruminant species to infer their ecology, based on feeding style. Traditionally, ruminants are classified into two groups – browsers and grazers – with the former being ascribed ‘pointed’ snout shapes, and the latter a more ‘blunt’ shape, for a more random cropping process when eating. We wanted to see what degree this was accurate.

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Theropod dinosaurs were waaay more diverse than previously thought

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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