This reference work is the third supplement to Dinosaurs: The Encyclopedia (a 1998 American Library Association Outstanding Reference Book) and follows the intent and format of the encyclopedia and the first two supplements. This continuation of what is now the standard encyclopedia provides up-to-date concepts, based on the latest original research of paleontologists, on such topics as the Mesozoic Era; new discoveries, ideas and studies; ectothermy versus endothermy; dinosaurs and birds; dinosaur extinctions; dinosaurian systematics; dinosaurian genera; nomina nuda and excluded genera; and an appendix discussing dinosaur tracks and eggs.

Supplemental volumes do not repeat information from earlier volumes, but build upon them: view all volumes on the series page.