Convergent evolution is responsible for the wings of the bat, the bird ... few teeth, a rugged stomach, and large salivary glands. In each case, evolutionary adaptations allow them to exploit ...

The gooselike birds have lumpy piano legs like a Galápagos turtle, and seem to have a set of teeth. Clearly they ... Their state of neoteny was an adaptation, say Olson and James, to an ecosystem ...

Few subjects in evolutionary theory have posed such intriguing puzzles for so long as the origin of birds. Evidence of avian ... its jawbone and teeth were like those of a small dinosaur, and ...