Asiatic Mesonychidae (Mammalia, Condylarthra). Bulletin of the AMNH ; V. 132, Article 2 PDF Download
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Author: Frederick S. Szalay
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Category : Mesonychidae
Languages : en
Pages : 48
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Author: J.G.M. Thewissen
Publisher: Springer Science & Business Media
ISBN: 1489901590
Category : Science
Languages : en
Pages : 480
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Book Description
Research in whale origins is now in an explosive phase, with a cascade of discoveries adding to our understanding of the evolutionary pattern and a suite of new techniques being applied to address new questions. The objective of this volume is to provide a snapshot of this explosion. The volume paints the scene with a broad brush. Taken together the chapters clearly indicate that cetacean origins is a field that is dynamic, multidisciplinary, and that the end of the explosive phase is not in sight.
Author: W. Luckett
Publisher: Springer Science & Business Media
ISBN: 1468421662
Category : Science
Languages : en
Pages : 488
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The past decade has witnessed a tremendous surge of interest in varied aspects of primate biology, encompassing virtually all disciplines of the biological sciences. Regardless of whether these studies have been approached from a paleontological, morphological, developmental, biochemical, neuroanatomical, or behavioral point of view, one under lying theme has been a common interest in the possible phylogenetic relationships suggested by the results of such studies. In some cases, sound taxonomic principles have not been followed in the interpretation of these data, and this has led to skepticism among many taxonomists with regard to the validity of some of the genealogical relationships and conclusions suggested by comparative studies of living primates. It is generally agreed that the fossil record alone provides the essential time dimension for directly observing changes in characteristics, but unfortunately this record is limited both in the number of genera represented and particularly in the incomplete nature of the available preserved material. On the other hand, extensive comparative analyses of numerous characteristics in living primates have provided additional insight into possible phylogenetic relationships, despite the lack of a time dimension. Such studies of both fossil and living primates are enhanced considerably by a cladistic analysis of the probable primitive (ancestral) or advanced (derived) condition of each character state discussed, based upon their distribution (and ontogeny, wherever possible) in a wide variety of primate and nonprimate taxa, including other eutherian mammals, marsupials, mono tremes, and reptiles.
Author: Spencer G. Lucas
Publisher: New Mexico Museum of Natural History and Science
ISBN:
Category : Science
Languages : en
Pages : 227
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Author: Peter Zallinger
Publisher:
ISBN: 9780394836508
Category : Vertebrates, Fossil
Languages : en
Pages : 36
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Author: Xiaoming Wang
Publisher: Columbia University Press
ISBN: 0231150121
Category : Nature
Languages : en
Pages : 760
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"This book is on the emergence of mammals in Asia, based largely on new fossil finds throughout Asia and cutting-edge biostratigraphic and geochemical methods of dating the fossils and their geological substrate"--Provided by publisher.
Author: Spencer G. Lucas
Publisher: New Mexico Museum of Natural History and Science
ISBN:
Category : Science
Languages : en
Pages : 450
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Neogene Mammals: New Mexico Museum of Natural History and Science Bulletin 44
Author: W. Bruce Saunders
Publisher: Springer Science & Business Media
ISBN: 9048132991
Category : Science
Languages : en
Pages : 683
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1. 1 Nautilus and Allonautilus: Two Decades of Progress W. Bruce Saunders Department of Geology Bryn Mawr College Bryn Mawr PA 19010 wsaunder@brynmawr. edu Neil H. Landman Division of Paleontology American Museum of Natural History New York, New York 10024 landman@amnh. org When Nautilus: Biology and Paleobiology of a Living Fossil was published in 1987, it marked a milestone in cross-disciplinary collaboration. More than half of the contributing authors (36/65) were paleontologists, many of whom were collaborating with neontological counterparts. Their interest in studying this reclusive, poorly known animal was being driven by a search for clues to the mode of life and natural history of the once dominant shelled cephalopods, through study of the sole surviving genus. At the same time, Nautilus offered an opportunity for neontologists to look at a fundamentally different, phylogenetically basal member of the extant Cephalopoda. It was a w- win situation, combining paleontological deep-time perspectives, old fashioned expeditionary zeal, traditional biological approaches and new techniques. The results were cross-fertilized investigations in such disparate fields as ecology, functional morphology, taphonomy, genetics, phylogeny, locomotive dynamics, etc. As one reviewer of the xxxvi Introduction xxxvii book noted, Nautilus had gone from being one of the least known to one of the best understood of living cephalopods.
