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Archive for July, 2011

The Berlin specimen of Archaeopteryx. (Photo of WitmerLab cast by Amy Martiny.)

I’m an unabashed archaeopterygophile. When I’m in the presence of these famous fossils, the sense of history and significance is palpable. So, when it occurred to me that 2011 marks the 150th anniversary of the discovery and naming of Archaeopteryx, I blogged here about sesquicentennial activities. Meanwhile, I was quietly reviewing an article for the venerable science weekly Nature that, if correct, would suggest that Archaeopteryx might not be a bird at all. Today, the article by Xu Xing and colleagues appears, and I was asked to write the News & Views commentary that appears in the same issue. Xu and colleagues report on the discovery of a new species from the Jurassic of Liaoning, China, named Xiaotingia zhengi. Their analysis suggests not only that Xiaotingia is an archaeopterygid, but that archaeopterygids are outside Avialae, the lineage of true birds. The bottom line: Archaeopteryx isn’t a bird! Really? How is that possible and what are the consequences?

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The Discovery Channels in the UK and the US recently have aired documentaries called “Dino Gangs” that follow dinosaur paleontologist Philip Currie around the globe (Alberta, Mongolia, Indonesia, South Africa, Great Britain), including little Athens, Ohio, the home of Ohio University. “Dino Gangs” addresses Currie’s theory that tyrannosaurs hunted as cooperative, social packs. Phil and the film crew from Atlantic Productions were here to talk with me about my work with Ryan Ridgely on tyrannosaur brains and sensory capabilities…basically whether tyrannosaurs had the mental wherewithal to pull off pack hunting. Phil Currie and his collaborators have published a few articles that have alluded to the possibility of coordinated, social, pack hunting, mostly notably his 1998 article in Gaia. My goal here is neither to evaluate the nuances of his arguments (e.g., the taphonomic issues) nor to address the media hoopla from the folks at Atlantic, the same folks who brought us Darwinius  and Predator X (check out Brian Switek’s thoughtful response). My goal is simply to relate what went on here in Athens and to clarify how I think tyrannosaur neuroanatomy fits into the argument.

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