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| Author | : Norman Francis Hughes |
| Publisher | : Cambridge University Press |
| Total Pages | : 322 |
| Release | : 1994-08-04 |
| Genre | : Science |
| ISBN | : 9780521411455 |
The enigmatic origins of the dominant flowering plant groups are reviewed in this book.
| Author | : Valentin A. Krassilov |
| Publisher | : Pensoft Publishers |
| Total Pages | : 280 |
| Release | : 1997 |
| Genre | : Science |
| ISBN | : 9789546420169 |
| Author | : Norman Francis Hughes |
| Publisher | : |
| Total Pages | : 242 |
| Release | : 1982 |
| Genre | : |
| ISBN | : |
| Author | : Else Marie Friis |
| Publisher | : CUP Archive |
| Total Pages | : 372 |
| Release | : 1987 |
| Genre | : Science |
| ISBN | : 9780521311731 |
An overview of works on the origins of angiosperms and the ecological effects upon terrestrial life of their rapid radiation.
| Author | : Xin Wang |
| Publisher | : Springer |
| Total Pages | : 238 |
| Release | : 2011-07-23 |
| Genre | : Science |
| ISBN | : 9783642011627 |
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 | : David W. Taylor |
| Publisher | : |
| Total Pages | : 418 |
| Release | : 2014-01-15 |
| Genre | : |
| ISBN | : 9781475770414 |
| Author | : Xin Wang |
| Publisher | : Springer |
| Total Pages | : 407 |
| Release | : 2017-08-02 |
| Genre | : Science |
| ISBN | : 3319583255 |
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 | : Michael Novacek |
| Publisher | : Farrar, Straus and Giroux |
| Total Pages | : 632 |
| Release | : 2008-11-11 |
| Genre | : Science |
| ISBN | : 1466821604 |
A paleontologist awakens us to the "extinction event" that human activity is bringing about today The natural world as humans have always known it evolved close to 100 million years ago, with the appearance of flowering plants and pollinating insects during the age of the dinosaurs. Its tremendous history is now in danger of profound, catastrophic disruption. In Terra, a brilliant synthesis of evolutionary biology, paleontology, and modern environmental science, Michael Novacek shows how all three can help us understand and prevent what he (and others) call today's "mass extinction event." Humanity's use of land, our consumption, the pollution we create, and our contributions to global warming are causing this crisis. True, the fossil record of hundreds of millions of years reveals that wild and bounteous nature has always evolved not quietly but thunderously, as species arise, flourish, die off, and are replaced by new species. We learn from paleontology and archaeology that for 50,000 years, human hunting, mining, and agriculture have changed many localities, sometimes irrevocably. But today, Novacek insists, our behavior endangers the entire global ecosystem. And if we disregard—through ignorance, antipathy, or apathy—the theory of evolution that developed with our modern understanding of the Earth's past, we not only impede enlightenment but threaten any practical strategy for our own survival. The evolutionary future of the entire living planet depends on our understanding this.
| Author | : |
| Publisher | : Alexander Doweld |
| Total Pages | : 134 |
| Release | : |
| Genre | : Paleobotany |
| ISBN | : |
| Author | : Douglas Soltis |
| Publisher | : University of Chicago Press |
| Total Pages | : 587 |
| Release | : 2018-01-24 |
| Genre | : Science |
| ISBN | : 022644175X |
Although they are relative latecomers on the evolutionary scene, having emerged only 135?170 million years ago, angiosperms—or flowering plants—are the most diverse and species-rich group of seed-producing land plants, comprising more than 15,000 genera and over 350,000 species. Not only are they a model group for studying the patterns and processes of evolutionary diversification, they also play major roles in our economy, diet, and courtship rituals, producing our fruits, legumes, and grains, not to mention the flowers in our Valentine’s bouquets. They are also crucial ecologically, dominating most terrestrial and some aquatic landscapes. This fully revised edition of Phylogeny and Evolution of the Angiosperms provides an up-to-date, comprehensive overview of the evolution of and relationships among these vital plants. Incorporating molecular phylogenetics with morphological, chemical, developmental, and paleobotanical data, as well as presenting a more detailed account of early angiosperm fossils and important fossil information for each evolutionary branch of the angiosperms, the new edition integrates fossil evidence into a robust phylogenetic framework. Featuring a wealth of new color images, this highly synthetic work further reevaluates long-held evolutionary hypotheses related to flowering plants and will be an essential reference for botanists, plant systematists, and evolutionary biologists alike.
