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The odontode system, which encompasses teeth and other dentine-based structures, is ancient. Odontodes are present in the oldest vertebrate fossils, dating back 500 million years, and still play an important role in the anatomy and function of living jawed vertebrates. Fossils preserve odontode tissues with remarkable nanoscale fidelity, allowing the evolution and diversification of the odontode system to be studied in deep time as well as across the diversity of living vertebrates. This synthetic volume presents an overview of odontode research by internationally leading researchers from different fields of biology.. Key Features Summarizes classic and cutting-edge research devoted to the development and evolution Focuses on the cellular aspects of odontogenesis Documents the structural and functional diversity of odontode tissues Describes the patterning mechanisms of dentitions in various vertebrate groups Provides a thorough index for students

Chondrichthyans possess unique anatomical features compared to other vertebrates, in particular a fully cartilaginous skeleton and a permanently renewed dentition. These characteristics make the fossilization of whole bodies difficult and consequently their fossil record consists mainly of a large number of isolated teeth. The study of their dentition is therefore of primary interest for our understanding of the evolution of this group. Beyond the dental morphology, the structure of the tissues composing the dentition has proved an important source of information, sometimes difficult to interpret, on the eating habits and the paleobiology of these animals. This book makes a thorough review of the existing theories in this field of research as well as introducing new elements from more recent studies. Through close reference to the fossil record of ancient selachians it examines what the study of dental tissue in cartilaginous fish can tell us about the evolution and the past biology of these animals, as well as what we can learn about the evolution of teeth themselves. - Focuses on the evolution of the teeth microstructure of the cartilaginous fishes - Offers a complete overview of the terminology used to describe fish tooth microstructures - Offers an overview of convergent enameloid microstructures between actinopterygians (ray-finned fishes) and chondrichthyans to enable better understanding of the evolution of this kind of tissue - Highlights the importance of isolated fossil teeth to understand the evolution of whole clades - Discusses the use of isolated fossil teeth to understand the evolution of whole clades

S. E. BAILEY Department of Human Evolution Max Planck Institute for Evolutionary Anthropology Deutscher Platz 6 D-04103 Leipzig, Germany and Center for the Study of Human Origins, Department of Anthropology, New York University, 25 Waverly Place New York, NY 10003, USA sbailey@nyu. edu J. -J. HUBLIN Department of Human Evolution Max Planck Institute for Evolutionary Anthropology Deutscher Platz 6 D-04103 Leipzig, Germany hublin@eva. mpg. de When faced with choosing a topic to as teeth represent, by far, the most abundant be the focus of the first symposium material documenting different species of in Human Evolution at the Max Planck extinct non-human primates and hominins. As Institute for Evolutionary Anthropology in such, much of what we know about non- Leipzig, a paleoanthropological perspective human primate and hominin evolution is based of dental anthropology was a natural choice. on teeth. Teeth make up a disproportionate number Teeth have been a focus of interest for of the fossils discovered. They represent physical anthropologists over many gen- strongly mineralized organs of compact shape, ations. Teeth provide a multitude of which allow better preservation in geological information about humans – including deposits and archaeological sites than any cultural treatment, pathology, morphological other part of the skeleton. As a result, variation, and development. The presence of since the discoveries of the first fossils of culturally induced wear (toothpick grooves, extinct species, vertebrate paleontology has for example) reveals something about what been built primarily on analyses of teeth.