Author: Xin Wang Publisher: Springer ISBN: 3319583255 Category : Science Languages : en Pages : 407
Book Description
This book discusses the controversial and conflicting hypotheses on the origin of angiosperms, which was generally assumed to be restricted to the Cretaceous and later ages. Since publishing the first edition of “The Dawn of Angiosperms” in 2010, several important advances have been made in this field of science, namely 1) the discovery of new fossil angiosperms from the Jurassic; 2) European researchers discovering angiosperm-like pollen from the Triassic; and most importantly 3) the discovery of a perfect flower from the Jurassic. All of these findings are at odds with the currently widely accepted evolutionary theories, and thus call upon us to critically reassess botanical theory. Accordingly, the new edition of this book not only includes more new fossil taxa, but also documents them in greater detail and corrects many commonly held misconceptions. In so doing, it makes related studies and teaching on the early history of angiosperms more realistic, concrete, and tangible, providing concrete fossil evidence as the basis for future research, and helping to distinguish the most accurate botanical hypotheses.
Author: Xin Wang Publisher: Springer Science & Business Media ISBN: 3642011608 Category : Science Languages : en Pages : 247
Book Description
Angiosperms are the most diversi ed plant group in the world, being represented by ca 300,000 species in about 400 families. Like all of Life, including ourselves, they have had their own history and gone through many evolutionary stages before they arrived at their current forms. The origin of Angiospermae ( owering plants) has been the subject of much dispute because this is a key event in the history of life, and has a far-reaching in uence on our understanding of relationships among seed plants as a whole as well as within the angiosperms. Until recently most of palae- otanists recognized angiosperms only from the Cretaceous and younger strata. This contradicts the results of molecular analyses. I have been working on Mesozoic fossil plants for the past two decades, during which time I have studied a number of fossil plants. Some of these fossil plants have been published as Jurassic angiosperms, and, unsurprisingly, many questions and doubts have been raised about them. These questions need to be addressed se- ously and journal papers do not provide suf cient space to compare and relate these early angiosperms. In this book these pioneer angiosperms are documented in detail, sometimes with new specimens not studied before. Also, I propose a de nition of angiosperms that could be adopted in palaeobotany. My aim is to improve clarity and objectivity of judgment about what constitutes a fossil angiosperm.
Author: Christopher Ketcham Publisher: BRILL ISBN: 9004428542 Category : Philosophy Languages : en Pages : 243
Book Description
The journey towards morality in nature can be seen through the million-year-old relationship of the flowering plant and honeybee social group. Flowers and Honeybees brings what science has learned into a dialog with the philosophy of morality.
Author: B P Pandey Publisher: S. Chand Publishing ISBN: 9355016689 Category : Science Languages : en Pages : 624
Book Description
This textbook has been designed to meet the needs of B.Sc. Second Semester students of Botany as per Common Minimum Syllabus prescribed for all Uttarakhand State Universities and Colleges under the recommended National Education Policy 2020. This textbook comprehensively covers the theoretical and practical aspect of the paper Pteridophytes, Gymnosperms and Angiosperms. The theory part of the text introduces the students to develop an understanding of morphology, anatomy and reproduction of Pteridophytes, Gymnosperms and Angiosperms. It also discusses the origin of angiosperms along with their phylogeny and classification in details. Furthermore, taxonomy of plant families has been discussed in systematic manner. Practical part provides a strong conceptual understanding of the subject, it also helps in developing scientific outlook of the student.
Author: S-C. Chang Publisher: Geological Society of London ISBN: 178620567X Category : Science Languages : en Pages : 244
Book Description
Mesozoic Biological Events and Ecosystems in East Asia covers a wide range of topics, encompassing palaeoenvironments, palaeoecosystems and important vertebrate, invertebrate and plant fossils, some found in amber with excellent preservation of delicate morphological features. Fifty-three authors from a number of different disciplines – geochronology, palaeontology, stratigraphy, sedimentology, tectonics and geochemistry – contribute to the 18 articles in the volume. Well-preserved fossils and rocks continue to be found from marine and terrestrial sediments across East Asia. Over some years, the palaeontological and geological evidence discovered from this region has significantly improved our understanding of Mesozoic environments. In discussing feathered dinosaurs, primitive birds, early mammals, diverse insects, amber inclusions, the oldest-known flowers and research utilizing new, advanced methods, this volume explores Earth’s history in even greater detail. What other exciting discoveries are waiting to be unveiled in the future?
Author: Dr. Vatsala Tomar Publisher: AG PUBLISHING HOUSE (AGPH Books) ISBN: 811902544X Category : Study Aids Languages : en Pages : 207
Book Description
This book is intended for all levels of botanists and students taking a local flora course. For the reason that the botany is a larger subject, the book's scope is limited to angiosperms and plant bio-systems. It is intended to provide sufficient information to enable an understanding of plant taxonomy, comprehension of various contemporary classification systems, comprehension of fundamental principles of plant nomenclature, and appreciation of the mechanics of plant identification, including the preparation and preservation of herbarium specimens. Taxonomy is a difficult topic. It is, nevertheless, founded on knowledge and comprehension of plant morphology and anatomy, cytology, genetics, paleontology, and plant geography. This book is meant to let non-taxonomists utilize a handbook or flora that accounts for the plants in any place. A reader, on the other hand, would find this book highly useful in learning topics such as taxonomic hierarchy and Linnaeus classification. The process of plant nomenclature, herbarium preparation and maintenance are also included. This not only focus on biological processes but, also the standardizing authority such as ICBN, are explored in detail, and the book is presented in such a way that understanding the ideas in the material requires little effort.
Author: Xin Wang Publisher: Frontiers Media SA ISBN: 2889454401 Category : Languages : en Pages : 184
Book Description
The great diversity of land plants (especially angiosperms) is mainly reflected in the diversity of various reproductive organs of plants. However, despite long time intensive investigations, there are still uncertainties and sometimes misunderstandings over the nature and evolution of reproductive organs in land plants. With the new advances made in various fields of botany (especially at molecular level), there is increasing light shed on some aspects of flowers (reproductive organs of angiosperms). In this ebook, we collect 15 papers reporting new understanding on plant reproductive organs. These works range from morphology and anatomy to molecular regulatory networks underlying traditional observations. We understand this single book cannot reach our goal, but we do hope that this book can contribute to or initiate some efforts leading to the final solution of some problems concerning the homology and evolution of reproductive organs in plants.
Author: Xin Wang
Author: Xin Wang
Author: Christopher Ketcham
Author: Else Marie Friis
Author: 
Author: Norman Francis Hughes
Author: B P Pandey
Author: S-C. Chang
Author: Dr. Vatsala Tomar
Author: Xin Wang