The Rise of Placental Mammals

The Rise of Placental Mammals PDF Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801880223
Category : Business & Economics
Languages : en
Pages : 282

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The Rise of Placental Mammals

The Rise of Placental Mammals PDF Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801880223
Category : Business & Economics
Languages : en
Pages : 282

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Extinction and Radiation

Extinction and Radiation PDF Author: J. David Archibald
Publisher: JHU Press
ISBN: 0801898056
Category : Nature
Languages : en
Pages : 121

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Book Description
This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.

Placental Bed Disorders

Placental Bed Disorders PDF Author: Robert Pijnenborg
Publisher: Cambridge University Press
ISBN: 1139488686
Category : Medical
Languages : en
Pages : 325

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Book Description
It is now recognized that defective placentation in the human is a cause of many pregnancy complications, such as spontaneous abortion, preterm labor and delivery, pre-eclampsia, intrauterine growth restriction, fetal death and abruptio placenta. These clinical disorders can often have long-term consequences into adulthood, causing cardiovascular disease, obesity and diabetes for the newborn as well as an increased risk of premature death in the mother. This is the first book to be entirely focused on the placental bed, bringing together the results of basic and clinical research in cell biology, immunology, endocrinology, pathology, genetics and imaging to consolidate in a single, informative source for investigators and clinicians. Its core aim is to explore new approaches and improve current clinical practice. This is essential reading for clinicians in obstetric, cardiovascular and reproductive medicine.

The Beginning of the Age of Mammals

The Beginning of the Age of Mammals PDF Author: Kenneth D. Rose
Publisher: JHU Press
ISBN: 9780801884726
Category : Business & Economics
Languages : en
Pages : 468

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Mammals: A Very Short Introduction

Mammals: A Very Short Introduction PDF Author: T. S. Kemp
Publisher: Oxford University Press
ISBN: 0191079588
Category : Science
Languages : en
Pages : 186

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Book Description
From a modest beginning in the form of a little shrew-like, nocturnal, insect eating ancestor that lived 200 million years ago, mammals evolved into the huge variety of different kinds of animals we see today. Many species are still small, and follow the lifestyle of the ancestor, but others have adapted to become large grazers and browsers, like the antelopes, cattle, rhinos, and elephants, or the lions, hyaenas, and wolves that prey upon them. Yet others evolved to be specialist termite eaters able to dig into the hardest mounds, or tunnel creating burrowers, and a few took to the skies as gliders and the bats. Many live partly in the water, such as otters, beavers, and hippos, while whales and dugongs remain permanently in the seas, incapable of ever emerging onto land. In this Very Short Introduction T. S. Kemp explains how it is a tenfold increase in metabolic rate - endothermy or "warm-bloodedness" - that lies behind the high levels of activity, and the relatively huge brain associated with complex, adaptable behaviour that epitomizes mammals. He describes the remarkable fossil record, revealing how and when the mammals gained their characteristics, and the tortuous course of their subsequent evolution, during which many bizarre forms such as sabre-toothed cats, and 30-tonne, 6-m high browsers arose and disappeared. Describing the wonderful adaptations that mammals evolved to suit their varied modes of life, he also looks at those of the mainly arboreal primates that culminated ultimately in Homo sapiens. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

The Rise and Reign of the Mammals

The Rise and Reign of the Mammals PDF Author: Steve Brusatte
Publisher: HarperCollins
ISBN: 0062951521
Category : Science
Languages : en
Pages : 568

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Book Description
New from the author of the acclaimed bestseller The Rise and Fall of the Dinosaurs (“A masterpiece of science writing.” —Washington Post) and “one of the stars of modern paleontology” (National Geographic), a sweeping and revelatory history of mammals, illuminating the lost story of the extraordinary family tree that led to us. National Bestseller • Top 10 Nonfiction of 2022: Kirkus • Best Science Books of 2022: The Times UK We humans are the inheritors of a dynasty that has reigned over the planet for nearly 66 million years, through fiery cataclysm and ice ages: the mammals. Our lineage includes saber-toothed tigers, woolly mammoths, armadillos the size of a car, cave bears three times the weight of a grizzly, clever scurriers that outlasted Tyrannosaurus rex, and even other types of humans, like Neanderthals. Indeed humankind and many of the beloved fellow mammals we share the planet with today—lions, whales, dogs—represent only the few survivors of a sprawling and astonishing family tree that has been pruned by time and mass extinctions. How did we get here? In his acclaimed bestseller The Rise and Fall of the Dinosaurs—hailed as “the ultimate dinosaur biography” by Scientific American—American paleontologist Steve Brusatte enchanted readers with his definitive history of the dinosaurs. Now, picking up the narrative in the ashes of the extinction event that doomed T-rex and its kind, Brusatte explores the remarkable story of the family of animals that inherited the Earth—mammals— and brilliantly reveals that their story is every bit as fascinating and complex as that of the dinosaurs. Beginning with the earliest days of our lineage some 325 million years ago, Brusatte charts how mammals survived the asteroid that claimed the dinosaurs and made the world their own, becoming the astonishingly diverse range of animals that dominate today’s Earth. Brusatte also brings alive the lost worlds mammals inhabited through time, from ice ages to volcanic catastrophes. Entwined in this story is the detective work he and other scientists have done to piece together our understanding using fossil clues and cutting-edge technology. A sterling example of scientific storytelling by one of our finest young researchers, The Rise and Reign of the Mammals illustrates how this incredible history laid the foundation for today’s world, for us, and our future.

Mammalian Sexuality

Mammalian Sexuality PDF Author: Alan F. Dixson
Publisher: Cambridge University Press
ISBN: 1108426182
Category : Medical
Languages : en
Pages : 405

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Book Description
The first detailed account of post-copulatory sexual selection and the evolution of reproduction in mammals.

The Rise of Marine Mammals

The Rise of Marine Mammals PDF Author: Annalisa Berta
Publisher: JHU Press
ISBN: 142142326X
Category : Science
Languages : en
Pages : 213

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Book Description
A compelling look at the evolutionary history of marine mammals over the past 50 million years. Marine mammals have long captured the attention of humans. Ancient peoples etched seals and dolphins on the walls of Paleolithic caves; today, engineers develop microprocessors to track these denizens of the deep. This groundbreaking book from highly respected marine mammal paleontologist Annalisa Berta delves into the story of the extraordinary adaptations that gave the world these amazing animals. The Rise of Marine Mammals reveals remarkable fossil record discoveries that shed light on the origins, relationships, and diversification of marine mammals. Focusing on evolution and paleobiology, Berta provides an overview of marine mammal species diversity, enhanced with gorgeous life restorations by Carl Buell, Robert Boessenecker, William Stout, and Ray Troll and extensive line drawings by graphics editor James L. Sumich. The book also considers ongoing conservation challenges, demonstrating how the fossil record of adaptation in response to past environmental shifts may illuminate the way that marine mammals respond to global climate change. This invaluable evolutionary framework is essential for helping us understand how best to protect and conserve today’s polar bears, whales, dolphins, seals, and fellow warm-blooded ocean dwellers. The Rise of Marine Mammals also describes exciting breakthroughs that rely on new techniques of study, including 3-D imaging, and molecular, finite element, and morphometric analyses, which have enhanced scientists’ understanding of everything from the anatomy of fetal whales to the genes behind limb loss in cetaceans. Mammalogists, paleontologists, and marine scientists will find Berta’s insights absorbing, while developmental and molecular biologists, geneticists, and ecologists exploring integrative research approaches will benefit from her fresh perspective.

Beasts Before Us

Beasts Before Us PDF Author: Elsa Panciroli
Publisher: Bloomsbury Publishing
ISBN: 1472983971
Category : Science
Languages : en
Pages : 321

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Book Description
For most of us, the story of mammal evolution starts after the asteroid impact that killed the dinosaurs, but over the last 20 years scientists have uncovered new fossils and used new technologies that have upended this story. In Beasts Before Us, palaeontologist Elsa Panciroli charts the emergence of the mammal lineage, Synapsida, beginning at their murky split from the reptiles in the Carboniferous period, over three-hundred million years ago. They made the world theirs long before the rise of dinosaurs. Travelling forward into the Permian and then Triassic periods, we learn how our ancient mammal ancestors evolved from large hairy beasts with accelerating metabolisms to exploit miniaturisation, which was key to unlocking the traits that define mammals as we now know them. Elsa criss-crosses the globe to explore the sites where discoveries are being made and meet the people who make them. In Scotland, she traverses the desert dunes of prehistoric Moray, where quarry workers unearthed the footprints of Permian creatures from before the time of dinosaurs. In South Africa, she introduces us to animals, once called 'mammal-like reptiles', that gave scientists the first hints that our furry kin evolved from a lineage of egg-laying burrowers. In China, new, complete fossilised skeletons reveal mammals that were gliders, shovel-pawed Jurassic moles, and flat-tailed swimmers. This book radically reframes the narrative of our mammalian ancestors and provides a counterpoint to the stereotypes of mighty dinosaur overlords and cowering little mammals. It turns out the earliest mammals weren't just precursors, they were pioneers.

The Rise of Animals

The Rise of Animals PDF Author: Mikhail A. Fedonkin
Publisher: JHU Press
ISBN: 9780801886799
Category : Science
Languages : en
Pages : 352

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Book Description
An essential resource for paleontologists, biologists, geologists, and teachers, The Rise of Animals is the best single reference on one of earth's most significant events.