For the layperson and the paleontologist, this is the definitive reference work on dinosaurian genera. Section I provides a thorough history of fieldwork, laboratory studies and paleontological research, and outlines several of the scientific theories of dinosaur extinction. Section II provides dinosaurian systematics toward the end of organizing the various taxa into a convenient and workable order. Section III is an alphabetically arranged compilation of dinosaurian genera. Section IV details the doubtful genera that have appeared in the paleontological literature. Section V lists "excluded genera," or taxa that had been previously regarded as dinosaurian. This heavily illustrated volume contains many depictions of life models constructed by experts in vertebrate paleontology restoration and based on the original fossil material. Supplemental volumes do not repeat information from earlier volumes, but build upon view all volumes on the series page.

This is the first supplement to the highly acclaimed Dinosaurs: The Encyclopedia that was named an ALA OUTSTANDING REFERENCE BOOK. The new work, which maintains the arrangement of the primary volume and is up to date late into 1998, includes well over a dozen new dinosaurian genera and even more new species and new life restorations. Section I provides introductory text on subtopics such as "The Mesozoic Era, " "Ectothermy Versus Endothermy" and "Dinosaur Extinctions." Section II continues the workable ordering of dinosaurian systematics. Section III continues the alphabetical compilation of new dinosaurian genera. Section IV continues the detailing of doubtful genera that have appeared in the paleontological literature.

This reference work is the seventh supplement to The Encyclopedia (a 1998 American Library Association Outstanding Reference Book) and follows the intent and format of the encyclopedia and previous supplements. This supplement, as did its predecessors, offers primarily new information based upon the more recent research of vertebrate paleontologists; also, it corrects previously errors that may have crept into earlier volumes and emends outdated information. Among the many dramatic events discussed and updated are the first record of a dinosaur of any kind from Bulgaria, the first evidence of cannibalism in the genus Tyrannosaurus, the first evidence suggesting that some of the most avian dromaeosaurid theropods might have been venomous, the oldest known dinosaurian embryonic specimens recovered to date, and the first relatively complete dinosaur described from Korea. Supplemental volumes do not repeat information from earlier volumes, but build upon view all volumes on the series page.