title: Polar dinosaurs and ancient climates.
abstract: Dinosaur skeletons have recently been found well within the contemporary Arctic and Antarctic Circles. These discoveries have surprised palaeontologists who regarded the dinosaurs as warm-adapted animals. New geological evidence suggests that these polar areas were also rather colder than had been thought and this raises further problems in interpreting dinosaurian palaeobiology: were the dinosaurs fully endothermic and able to survive the darkness and cold of the polar regions, or could they undertake vast annual migrations of 3000-4000 km?
authors.affiliation: Dept of Geology, University of Bristol, Bristol BS8 1RJ, UK.
authors.forename: M J
authors.initials: MJ
authors.lastname: Benton