The discovery of New Zealand dinosaurs by retired housewife turned scientist Joan Wiffen is casting new light on the behaviour of dinosaurs during the Late Cretaceous and the puzzle of why dinosaurs in general became extinct.When retired Kiwi housewife Joan Wiffen went gemstone and fossil hunting with her late husband Pont back in 1972 she never imagined that she would be awarded an honorary PhD for discovering New Zealand's first dinosaur bones.
