Wahrend aus den tieferen und mittleren Anteilen des Tertiars, aus Eozan und Oligozan, nun schon eine betrachtliche Anzahl von artlieh gut definierten Holothurien-Resten bekannt ist, blieb unsere Kenntnis der miozanen Holothurien-Sklerite noch ausgesprochen luckenhaft. Die ersten Abbildungen von miozanen Skleriten, und zwar aus tortonen Ablagerungen des Wiener Beckens, brachten PAPP & KuPPER 1953, kurz nachdem 0. KuHN 1952, S. 123 darauf aufmerksam geD?;acht hatte, dass in den mikrofossilreichen jung- tertiaren Serien Osterreichs auch "Holothuroiden-Sklerite . . . wohl vorkommen durften". Die bei PAPP & KuPPER nur familienmassig zugeordneten Sklerite wurden von DEFLANDRE-RIGAUD 1961, S. 119 artlieh benannt und zu funf Arten, davon vier neu, gestellt. Bei Neuaufnahmen des Neogens am Sudwestrand des Leithagebirges im Burgenland 1951-1953 hatte A. TuLLMANN ebenfalls Holo- thurien-Sklerite, und zwar gleichfalls aus dem Torton, Fundort Eisenstadt, aus Mergeln der Bolivinenzone, isoliert. Ihm verdanke ich den Hinweis auf diesen und den Fundort Mullendorf, wo bei Aufarbeitung des alten, von A. TuLLMANN gesammelten Materials und in Mullendorf reichlich neu eingeholter Proben eine Er- weiterung unserer Kenntnis der tortonischen Holothurien von bisher 5 Arten auf insgesamt 20 Arten erzielt werden konnte. Unsere Kenntnis der miozanen Holothurien -Sklerite beruht demnach nach wie vor ausschliesslich auf OEsterreichischen Funden. Herrn Prof. Dr. A. PAPP danke ich fur die freundliche Er- laubnis zur Einsichtnahme des Originalmaterials, Herrn Professor Dr. 0. KuHN fur rege Anteilnahme an meiner Arbeit und wertvolle Ratschlage. Der OEsterreichischen Akademie der Wissenschaften verdanke ich eine Subventionierung meiner Arbeit aus Ertragnissen der Figdor-Stiftung.

Geared towards a broad variety of students, Dinosaurs: The Textbook, sixth edition, is a concise and lucid presentation of the biological and geological concepts of dinosaur science. It clarifies the evolution, phylogeny, and classification of the various species while modeling the best approach for navigating new and existing research. Revised to reflect recent fossil discoveries and the current consensus on dinosaur science, this text moves through the major taxonomic groups-including theropods, sauropodomorphs, ornithopods, ceratopsians, pachycephalosaurs, stegosaurs, and ankylosaurs-and concludes with updated chapters on the behavior and extinction of the dinosaurs, their biological relationship to birds, and their representation (or misrepresentation) in art, literature, film, and other forms of popular culture. The sixth edition represents a major revision of the leading text for an introductory course on dinosaurs, including comprehensive updates based on the latest scientific discoveries, research, and literature. With an extensive art program revised by leading paleoartists that features cutting-edge illustrations, it is a complete reader-friendly pedagogical package with extensive end-of-chapter summary tools, review questions, a detailed glossary, a dinosaur dictionary, and a comprehensive index. Please visit our supplemental materials page (https://cup.columbia.edu/extras/supplement/dinosaurs-the-textbook-sixth-edition) to find study and teaching aides for both students and teachers using Dinosaurs: The Textbook, sixth edition in class.

From his stunning discovery of "Tyrannosaurus rex "one hundred years ago to the dozens of other important new dinosaur species he found, Barnum Brown led a remarkable life (1873OCo1963), spending most of it searching for fossilsOCoand sometimes oilOCoin every corner of the globe. One of the most famous scientists in the world during the middle of the twentieth century, BrownOCowho lived fast, dressed to the nines, gambled, drank, smoked, and was known as a ladiesOCO manOCobecame as legendary as the dinosaurs he uncovered. "Barnum Brown "brushes off the loose sediment to reveal the man behind the legend. Drawing on BrownOCOs field correspondence and unpublished notes, and on the writings of his daughter and his two wives, it discloses for the first time details about his life and travelsOCofrom his youth on the western frontier to his spying for the U.S. government under cover of his expeditions. This absorbing biography also takes full measure of BrownOCOs extensive scientific accomplishments, making it the definitive account of the life and times of a singular man and a superlative fossil hunter.