Editor's Summary
26 October 2006
Top billing
Imagine a flightless carnivorous bird three metres tall with a skull the size of a horse's, and a vicious, eagle-like bill. What you are imagining is a phorusrhacid ('terror bird'), an extinct lineage that includes the largest known birds. The discovery of an enormous fossil avian skull from the middle Miocene of Patagonia (Comallo, Argentina) prompts a reanalysis of what the phorusrhacids looked like, and the suggestion that there were marked differences between the morphology of large and small variants.
Brief Communications: Palaeontology: Skull morphology of giant terror birds
These monstrous birds were probably more agile and less portly than previously thought.
Luis M. Chiappe & Sara Bertelli
doi:10.1038/443929a
