The distribution of late Triassic tetrapods indicates that although the rifting of Gondwana may have been initiated then, there were nonetheless open avenues for the movements of land-living vertebrates accross the breadth of the ancient
. Terrestrial tetrapods known or inferred to have lived in New Zealand during the Upper Cretaceous were forms probably widespread throughout Gondwana before New Zealand's isolation. A brief survey of other known Upper Cretaceous insular dinosaur faunas indicates