There seemed to be a real conflict between the interpretations of the ornithologist and the claims of the geologist, and that deals with the fauna of Australia. According to the geologists, Australia having been a part of that Mesozoic Gondwana continent that extended from South America across the south… across Antarctic to Australia, the bird fauna of Australia should have a strong Gondwana element. But in reality at best 3% only of the Australian birds are Gondwana elements, and the biogeographers just simply couldn’t believe it. But now the latest geological investigations show that actually during the break up of Gondwanaland a major fringe of the Australian plate separated from Australia, moved northward and established contact with Asia, with so-called Laurasia. And this series of islands, these small broken up plates served as stepping stones for colonists coming down from Asia, so here the… so a geographer had discovered something or had demonstrated something that the geologists only later were able to discover.