Waimanu was a genus of early penguin which lived soon after the Cretaceous-Tertiary extinction event, lending support to the theory that the radiation of modern birds took place before the extinction of the dinosaurs, not after as others had proposed. While it was a very early member of the sphenisciformes, Waimanu was flightless (like all modern members of its order). Though its wing bones don't show the extreme specializations modern penguins have for an aquatic lifestyle, it does seem adapte… (More on Waimanu)