This is a book for beginners. Not geological beginners, because an introductory course in paleontology and some knowledge of the petrographic microscope is assumed, but for beginners in the study of the petrography of fossil constituents in sedimentary rocks. Fossils are studied for various reasons: 1) to provide chron ologic (time) frameworks, 2) to delineate rock units and ancient environments, or 3) to understand the past development (evolu tion) of living plants and animals. All of these uses may be at tained through petrographic studies of thin sections of fossils embedded in sedimentary rocks. Some knowledge of the appear ance of fossils in thin section is also fundamental for general stratigraphic studies, biofacies analyses, and is even useful in studying some metamorphic rocks. Commonly, fossils are essen tial for the delineation of carbonate rock types (facies or bio facies). We have written this book for sedimentary petrologists and stratigraphers, who routinely encounter fossils as part of their studies but who are not specialists in paleontology, and for students who are seeking a brief review and an introduction to the literature of the petrography of fossiliferous sedimentary rocks. Although experienced paleontologists may be appalled by the many generalized statements on size, shape, and principal fossil characters recited herein, we counter that we have had some success in introducing non-paleontologically oriented geologists to the use and identification of fossil constituents without using excessive paleontological terminology and detailed systematics."

No other disjunct pieces of land present such striking similarities as the widely sepa 1 rated regions with a mediterranean type of climate, that is, the territories fringing the Mediterranean Sea, California, Central Chile and the southernmost strips of South Mrica and Australia. Similarities are not confined to climatic trends, but are also reflected in the physiognomy ofthe vegetation, in land use patterns and frequently in the general appearance of the landscape. The very close similarities in agricultural practices and sometimes also in rural settlements are dependent on the climatic and edaphic analogies, as well as on a certain commonality in qdtural history. This is certainly true for the Mediterranean Sea basin which in many ways represents a sort of ecological-cultural unit; this is also valid for CaUfornia and Chile, which were both settled by Spaniards and which showed periods of vigorous commercial and cultural interchanges as during the California gold rush. One other general feature is the massive interchange of cultivated and weed species of plants that has occurred between the five areas of the world that have a mediterranean-type climate, with the Mediterranean basin region itself as a major source. In spite of their limited territorial extension, probably no other parts of the world have played a more fundamental role in the history of mankind. Phoenician, Etruscan, Hellenic, Jewish, Roman, Christian andArab civilizations, among others, haveshapedmanyofman's present attitudes, including his position and perception vis-a-vis nature."

Although consensus exists among researchers that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds. The last 20 years witnessed the discovery of a wide array of avian-like theropods that has considerably amplified the anatomical disparity among deinonychosaurians, some of which resemble Archaeopteryx more than Deinonychus. Among these newly discovered theropods that show remarkable bird-like characteristics are the four-winged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. A bizarre group of minute-sized coelurosaurs, the Scansoriopterygidae, also exhibits some avian similarities that lead some authors to interpret them as more closely related to birds than other dinosaurs. With the aim to explore the phylogenetic relationships of these coelurosaurians and birds, we merged recently published integrative databases, resulting in significant changes in the topological distribution of taxa within Paraves. We present evidence that Dromaeosauridae, Microraptoria, Unenlagiidae, and Anchiornis ] Xiaotingia form successive sister taxa of Aves, and that the Scansoriopterygidae are basal coelurosaurians not closely related to birds. The implications in the evolutionary sequence of anatomical characters leading to birds, including the origin of flight, are also considered in light of this new phylogenetic hypothesis.

This beautifully illustrated book describes one of the most famous fossil deposits known: the Hunsruck Slate of Germany. These spectacular fossils, in which not just the hard parts but also the soft-tissues of the animals are preserved in pyrite in many cases, provide the most complete record available of life in the Devonian seas. First published in 1998, the book provides a comprehensive account of these remarkable fossils. It is written in an accessible style, and is extensively illustrated with photographs and X-radiographs of many of the finest specimens. The book reviews the different plant and animal groups, and includes a complete taxonomic list and comprehensive bibliography. It will be of most value to researchers and graduate students in palaeontology, geology and evolutionary biology, but it will also be of interest to amateur collectors and natural historians.

Past climatic and environmental change is of prime importance in understanding climatic changes of today. This book describes and discusses the great environmental changes revealed by a study of a small area in central Norfolk, which has given a remarkable wealth of data concerning the many consequences of climatic change over the past few hundred thousand years. There is evidence for past ice advance over the area, for changes from tundra to forest climates and the reverse, and from stable conditions with lakes surrounded by forest to unstable periods with active soil flow under arctic conditions. The main purpose of this study is to demonstrate the evidence for climatic change and how this affected vegetation and flora and the processes which have formed the present landscape, and also to show the methods of study which can be used to investigate past climatic change and its consequences. Rather than a theoretical treatment of climatic change, this book is a unique 'case study' of an investigation of past climatic change.

This volume 1 and its companion volume 2 present the results of new investigations into the geology, paleontology and paleoecology of the early hominin site of Laetoli in northern Tanzania. The site is one of the most important paleontological and paleoanthropological sites in Africa, worldrenowned for the discovery of fossils of the early hominin Australopithecus afarensis, as well as remarkable trails of its footprints. The first volume provides new evidence on the geology, geochronology, ecology, ecomorphology and taphonomy of the site. The second volume describes newly discovered fossil hominins from Laetoli, belonging to Australopithecus afarensis and Paranthropus aethiopicus, and presents detailed information on the systematics and paleobiology of the diverse associated fauna. Together, these contributions provide one of the most comprehensive accounts of a fossil hominin site, and they offer important new insights into the early stages of human evolution and its context.

Proceedings of the Fourth International Conference on the Origin of Life and the First Meeting of the International Society for the Study of the Origin of Life (ISSOL), Barcelona, June 25-28, 1973. Vol. II: Contributed Papers

Palaeomagnetism and archaeomagnetism are fascinating specialized studies because they are applicable to such a wide range of problems in geology, archaeology and geophysics. They can also be undertaken cheaply, when compared with most other geophysical techniques, and, at first sight, simply. In fact, real comprehension of the magnetic processes that have occurred in rocks and other types of material over several thousands or many millions of years is still extremely difficult to assess and measure. On this basis, this book cannot explain all such features, nor can it attempt to cover all the actual and potential applications of the method. All that can be attempted is to give an impression of the ways in which such techniques can be used in a wide variety of fields, and how these techniques are usually applied. The magnetization of rocks is, in fact, one of the earliest of the true sciences, but we are still not in a position to answer many of the problems posed. Consequently some of the examples given of applications are, essentially, state-of-the-art comments, rather than being a review as such. The changing position of the geomagnetic poles with time is still not adequately defined, for example, and some of the more recent conventional views are given, although the emphasis is placed on more subjective, probably more controversial, evaluations.

One of the most intriguing paleobiogeographical phenomena involving the origins and gradual sundering of Gondwana concerns the close similarities and, in most cases, inferred sister-group relationships of a number of terrestrial and freshwater vertebrate taxa, e.g., dinosaurs, flying birds, mammals, etc., recovered from uppermost Cretaceous/ Paleogene deposits of West Antarctica, South America, and NewZealand/Australia. For some twenty five extensive and productive investigations in the field of vertebrate paleontology has been carried out in latest Cretaceous and Paleogene deposits in the James Ross Basin, northeast of the Antarctic Peninsula (AP), West Antarctica, on the exposed sequences on James Ross, Vega, Seymour (=Marambio) and Snow Hill islands respectively. The available geological, geophysical and marine faunistic evidence indicates that the peninsular (AP) part of West Antarctica and the western part of the tip of South America (Magallanic Region, southern Chile) were positioned very close in the latest Cretaceous and early Paleogene favoring the "Overlapping" model of South America-Antarctic Peninsula paleogeographic reconstruction. Late Cretaceous deposits from Vega, James Ross, Seymour and Snow Hill islands have produced a discrete number of dinosaur taxa and a number of advanced birds together with four mosasaur and three plesiosaur taxa, and a few shark and teleostean taxa.

Extinction is the ultimate fate of all biological species - over 99 percent of the species that have ever inhabited the Earth are now extinct. The long fossil record of life provides scientists with crucial information about when species became extinct, which species were most vulnerable to extinction, and what processes may have brought about extinctions in the geological past. Key aspects of extinctions in the history of life are here reviewed by six leading palaeontologists, providing a source text for geology and biology undergraduates as well as more advanced scholars. Topical issues such as the causes of mass extinctions and how animal and plant life has recovered from these cataclysmic events that have shaped biological evolution are dealt with. This helps us to view the biodiversity crisis in a broader context, and shows how large-scale extinctions have had profound and long-lasting effects on the Earth's biosphere.

A free open access ebook is available upon publication. Learn more at www.luminosoa.org. The Scarcity Slot is the first book to critically examine food security in Africa's deep past. Amanda L. Logan argues that African foodways have been viewed through the lens of 'the scarcity slot,' a kind of Othering based on presumed differences in resources. Weaving together archaeological, historical, and environmental data with food ethnography, she advances a new approach to building long-term histories of food security on the continent in order to combat these stereotypes. Focusing on a case study in Banda, Ghana that spans the past six centuries, The Scarcity Slot reveals that people thrived during a severe, centuries-long drought just as Europeans arrived on the coast, with a major decline in food security emerging only recently. This narrative radically challenges how we think about African foodways in the past with major implications for the future.

Olduvai is one of the most important prehistoric sites in the world; indeed, the only Middle Pleistocene site of comparable importance is Choukoutien and Olduvai can show deposits far older. The site has produced a mass of material of the highest archaeological and palaeontology importance and in this first of five volumes Dr Leakey and his collaborators make their preliminary reports. The story of the excavations initiated by Dr Leakey in 1951 is well known. Their purpose was to locate and uncover a series of living-floors of early Hand-axe man and, if possible, of the preceding Olduwan culture. The discoveries were of striking and far-reaching importance. They included, besides a mass of tools and artefacts, small animal and human remains and the famous skull of Zinjanthropus boisei, the earliest tool-making man. Against this background Leakey and his collaborators discuss the geological evidence, its relation to the fauna and other fossil evidence, the problems of climatic sequence and the use of potassium-argon dating. The purpose of this volume is to provide a context in which the fossil human remains and the Stone Age cultural sequence at Olduvai can be studied.

At Olduvai Gorge natural erosion exposed a deep series of superimposed geological beds containing rich artefact and fossil assemblages spanning the last 1.8 million years. The sire ot famous as a rsult of excavations conducted there since 1951 under the direction of Mary Leakey and her husband, the late Louis Leakey. This volume, written largely by Mary Leakey herself, is the last of the reports and records the archaeological finds in the upper part of the Olduvai sequence from excavations carried out from the end of 1968 until 1971. The period covered here is from about 1.2 to 0.4 million years ago and th efinds include artefacts and faunal remains excavated from sites in beds II, IV na the Masek beds. The volume follows on from the archaeological record in beds I and II published in volume 3 of the series.

One of the great enigmas of evolutionary biology has been how to treat animals of problematic systematic position. Many are known only as fossils, so this area has been of particular interest to palaeobiologists. This book represents a wide synthesis. It embraces not only general problems of animal classification of animals and new information on their molecular sequences that bear on their wider relationships, but also addresses more specific problems. These include details appraisals of both living and fossil groups. From the fossil record special emphasis is laid on examples from exceptionally preserved biotas that include the Burgess shale-type faunas of the Cambrian of south China and western North America, the Carboniferous Mazon Creek beds of Illinois, and the Jurassic Osteno beds of northern Italy. In addition, experimental studies of soft-patrt preservation in jellyfish are relevant to comparable preservation in the fossil record.

Birds is the first book to examine bird remains in archaeology and anthropology. Providing a thorough review of the literature on this topic, it also serves as a guide to the methods of study of bird remains from the past and covers a wide range of topics, including anatomy and osteology, taphonomy, eggs, feathers, and, bone tools. It examines the myriad ways in which people have interacted with birds in the past. The volume also includes discussion on the consumption of wild birds, the domestication of birds, cockfighting and falconry, birds in ritual and religion, and the role of birds in ecological reconstruction, providing an up-to-date survey of current knowledge on these topics. Birds will be an invaluable resource for undergraduate and graduate students interested in zooarchaeology and human-animal relations, as well as professional zooarchaeologists, archaeologists, and anthropologists interested in birds and people of the past.

The return of Halley's Cornet in 1986 has generated much ex citement in the scientific community with preparations already afoot for an International Cornet Watch and a cornet launch by the European Space Community, the Japanese and Soviet Space Scientists. The meet ing held at the University of Maryland in October 1980 was primarily stimulated by the preparations for further study of this cornet and by one of the most important unanswered questions related to comets, name ly, whether they may have made a eontribution to the origin of life on earth. Our un"derstanding of the role of comets in the origin of life must necessarily come from our studies of the astronomy and the chem istry of comets. Some clues to the processes which led to the for mation of organic molecules and eventually to the appearance of life have come from these studies of comets, perhaps the most ancient of all objects in our solar system. Whether there is, however, a biology of comets still remains to be seen, although some claims have been made that perhaps comets might themselves provide an environment for even the beginnings of life. Scientists with the latest available information on comets and differing opinions as to the role of comets in the origin of life attended this symposium. The formal papers presented are now being made available to the students of chemical evolution within the pages of this volume."

Precambrian stromatolites have received in depth, consideration from geologists and paleontologists; they were indeed searching for biosedimentary structures that were sufficiently characteristic and widely distributed to be considered as useful tools for stratigraphic correlation. Silicified stromatolites are also of interest as they contain preserved traces of ancient life. Calcareous Phanerozoic stromatolites have not received very much attention from geologists. Logan's too schematic morphological classification of 1964, was not so helpful to the knowledge of Phanerozoic stromatolites because neither their morphology nor their microstructure were studied in the same detail in which Proterozoic stromatolites have now been described. We therefore know little about the Phanerozoic stromatolites which, do, however, show an interesting range of diversification. A major questions stiII remaining to be answered include the history of stromatolite development and wether their morphology has "evolved" in addition to detailed information concerning Cenozoic nonmarine stromatolites which precipitate carbonate and the Recent giant stromatolites which trap particles. For these reasons Claude Monty, in 1981, launched the first volume of what was going to be a series on "Phanerozoic stromatolites" in order to describe their morphology, microstructure and paleoecology and to present them in their stratigraphic context.

Microfossils are ideally suited to environmental studies because their short generation times allow them to respond rapidly to environmental change. This book represents an assessment of the progress made in environmental micropalaeontology and sets out future research directions. The taxa studied are mainly foraminifera, but include arcellaceans, diatoms, dinoflagellates, and ostracodes. The papers themselves range from reviews of applications of particular taxa to specific case studies.

Living material contains about twenty different sorts of atom combined into a set of relatively simple molecules. Astrobiologists tend to believe that abiotic mater ial will give rise to life in any place where these molecules exist in appreciable abundances and where physical conditions approximate to those occurring here on Earth. We think this popular view is wrong, for it is not the existence of the building blocks of life that is crucial but the exceedingly complicated structures in which they are arranged in living forms. The probability of arriving at biologically significant arrangements is so very small that only by calling on the resources of the whole universe does there seem to be any possibility of life originating, a conclusion that requires life on the Earth to be a minute component of a universal system. Some think that the hugely improbable transition from non-living to living mat ter can be achieved by dividing the transition into many small steps, calling on a so-called 'evolutionary' process to bridge the small steps one by one. This claim turns on semantic arguments which seek to replace the probability for the whole chain by the sum of the individual probabilities of the many steps, instead of by their product. This is an error well known to those bookies who are accustomed to taking bets on the stacking of horse races. But we did not begin our investigation from this point of view.

Biogeography relates the evolution of the Earth's biota to major episodes in the Earth's history such as climatic changes and plate tectonic events. Furthermore, biogeographic patterns have played a prominent role in the development of the theory of evolution. Thus biogeography has the potential to make important contributions to the field of geobiology. Paleobiogeography emphasizes how analytical techniques from phylogenetic biogeography can be applied to the study of patterns in the fossil record. In doing this, it considers the strengths and weaknesses of paleobiogeographic data, the effects of plate tectonic processes (specifically continental rifting and collision) and changes in relative sea levels in terms of how they influence the evolution and distribution of organisms.

Initially, this work was designed to document and study the diversification of modern mammalian groups and was quite successful and satisfying. However, as field and laboratory work continued, there began to develop a suspicion that not all of the Eocene story was being told. It became apparent that most fossil samples, especially those from the American West, were derived from similar preservational circumstances and similar depositional settings. A program was initiated to look for other potential sources of fossil samples, either from non-traditional lithologies or from geographic areas that were not typically sampled. As this program of research grew it began to demonstrate that different lithologies and different geographic areas told different stories from those that had been developed based on more typical faunal assemblages. This book is conceived as an introduction to non-traditional Eocene fossils samples, and as a place to document and discuss features of these fossil assemblages that are rare or that come from rarely represented habitats.

Summary of the discoveries made during the course of excavations at the Paleolithic cave site of Fontechevade, France, between 1994 and 1998. The excavation team address major problems raised by earlier excavations at the site from 1937 to 1954. These earlier excavations produced two sets of problematic data : first, the Lower Paleolithic stone tool industry, the Tayacian, that differs in fundamental ways from other contemporary industries, second, the human skull fragment that has been interpreted as modern in nature but that apparently dates from the last interglacial, long before there is any evidence for humans from any other site in Europe. By applying modern stratigraphic, lithic, faunal, geological, geophysical, and radiometric analyses, the interdisciplinary team demonstrates that the Tayacian 'industry' is a product of site formation processes and that the actual age of the Fontechevade I fossil is compatible with other evidence for the arrival of modern humans in Europe.

Gideon Mantell and the Discovery of Dinosaurs is a scholarly yet accessible biography--the first in a generation--of a pioneering dinosaur hunter and scholar. Gideon Mantell discovered the Iguanodon (a famous tale set right in this book) and several other dinosaur species, spent over twenty-five years restoring Iguanodon fossils, and helped establish the idea of an Age of Reptiles that ended with their extinction at the conclusion of the Mesozoic Era. He had significant interaction with such well-known figures as James Parkinson, Georges Cuvier, Charles Lyell, Roderick Murchison, Charles Darwin, and Richard Owen. Dennis Dean, a well-known scholar of geology and the Victorian era, here places Mantell's career in its cultural context, employing original research in archives throughout the world, including the previously unexamined Mantell family papers in New Zealand.

In 1971 I published a review of ichnology other concentrating only on traces made (Houston AAPG: SEPM Trace Fossil Field by a certain group of organisms, regardless Trip Guidebook) that I thought could be of their setting. Nevertheless, needless re dundancy has hopefully been eliminated. expanded rather easily into a worthwhile Some of the chapters are more special book on the subject. I probed that possi ized than others (because of the nature of bility for a while, thinking that I would particular topics); hence, these may be write the book myself. As I began to out somewhat less familiar or "comprehensible" line the chapters in more detail, however, than others-depending upon the reader's it soon became apparent that my personal own interests and background. Other dif knowledge of too many facets of ichnology ferences in the scope and content of vari scraped bottom all too soon. I quickly de ous chapters stem from the simple fact cided that a better book could be produced that a considerably greater backlog of pre by soliciting specific contributions from vious work is available in certain facets of other workers who, collectively, had first ichnology than in others. But we hope hand experience with virtually every aspect that all of the chapters will prove to be use of the field. That became the actual plan, ful to anyone wishing to delve 'into them. the result of which is this book."