LONG
Hans-Dieter Sues is one of the leading palaeontologists in North America. His major contributions result from studies of the anatomy, evolution, ecology, biogeography and relationships of reptiles and the ancestors of mammals during the early Mesozoic. This was when the major groups living today first appeared, and the time of dinosaurs. He has concentrated his efforts on key events in vertebrate history, including the scope and long term results of major extinctions at the end of the Permian and Late Triassic, patterns of geographical distribution in relationship to the movement of continental plates, and the origin of herbivory.

SHORT
Hans-Dieter Sues is one of the leading palaeontologists in North America who has researched the anatomy, evolution, ecology, biogeography and relationships of reptiles and the ancestors of mammals during the early Mesozoic. He has concentrated his efforts on key events in vertebrate history, including the scope and long term results of major extinctions at the end of the Permian and Late Triassic.