Dedication

In a career spanning some forty years in vertebrate paleontology, John Ostrom has worked on so many groups of dinosaurs, and on so many problems relating to the paleobiology of dinosaurs, that he has become the central figure in dinosaur research since the mid-1960s. Originally headed for a career in medicine, John became sidetracked under the spell of George Gaylord Simpson and Ned Colbert, from whom he learned vertebrate paleontology at the American Museum of Natural History while a student...

Guide to using the Encyclopedia

The Encyclopedia of Dinosaurs is a complete source of information on the subject of dinosaurs, contained within the covers of a single volume. Each article in the Encyclopedia provides an overview of the selected topic to inform a broad spectrum of readers, from researchers to the interested general public. In order that you, the reader, will derive the maximum benefit from the Encyclopedia of Dinosaurs, we have provided this Guide. It explains how the book is organized and how the information...

Preface

Is it possible that the scientific understanding of dinosaurs has now come so far that a volume such as this, as big as the Manhattan telephone directory, is necessary to compile even a synopsis of what we know about them Could Dr. Gideon Mantell and Dean William Buckland, when they described the first remains of what would become known as dinosaurs, have ever imagined the scientific attention that would be paid to them more than 170 years later Could Richard Owen, who gave Dinosauria its name...

Encyclopedia Of All Known Prehistoric Life

Museo Argentino de Ciencias Naturales Abelisauridae constitutes a clade of Cretaceous theropods widely documented in the Gondwanan continents South America, Madagascar, and India . As far as Argentina is concerned, abelisaurids are the best represented group of predatory dinosaurs from the Cretaceous deposits in both number of specimens and species diversity. Abelisaurids underwent a significant evolutionary radiation during the Cretaceous in South America, becoming active predators of large...