Dinosaurs and other creaturesVideo | Updated 3 years ago As part of the In the Wild West lecture series, Dr Mikael Siversson, Curator of Palaeontology delivered his talk Dinosaurs and other creatures. Dinosaurs reached their peak diversity during the Cretaceous period when the rising sea isolated animal populations on large islands. This era produced some of the most spectacular animals the world has ever seen. Join Dr Mikael Siversson as he presents a time in our planet’s history when giant dinosaurs walked the earth, plane-sized pterosaurs patrolled the skies, and enormous crocodilians lurked in the rivers. Rangelands Natural Resource Management is the Presenting Partner of the 2014 In the Wild West series. View the discussion thread.