Describes several new pterosaurs from the Triassic, Jurassic and Cretaceous of Europe, North and South America, and Africa. Proposes alternative hypotheses of pterosaur phylogeny and evolution. Several papers discuss the functional anatomy of pterosaurs and its implications for aerial locomotion. The study of pterosaur footprints provides important new evidence concerning their terrestrial locomotion, and this approach is used in several contributions. A developing aspect of pterosaur research is bone histology, as shown by the final papers in this collection.