Extinction and Radiation

Extinction and Radiation PDF

Author: J. David Archibald

Publisher: JHU Press

Published: 2011-03-15

Total Pages: 121

ISBN-13: 0801898056

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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

Published: 2010-06-03

Total Pages: 325

ISBN-13: 1139488686

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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 Ancestor's Tale

The Ancestor's Tale PDF

Author: Richard Dawkins

Publisher: Houghton Mifflin Harcourt

Published: 2004

Total Pages: 696

ISBN-13: 9780618619160

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A renowned biologist provides a sweeping chronicle of more than four billion years of life on Earth, shedding new light on evolutionary theory and history, sexual selection, speciation, extinction, and genetics.

Mammalian Sexuality

Mammalian Sexuality PDF

Author: Alan F. Dixson

Publisher: Cambridge University Press

Published: 2021-06-03

Total Pages: 405

ISBN-13: 1108426182

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

The Beginning of the Age of Mammals

The Beginning of the Age of Mammals PDF

Author: Kenneth D. Rose

Publisher: JHU Press

Published: 2006-10-31

Total Pages: 468

ISBN-13: 080189221X

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In the tradition of G. G. Simpson's classic work, Kenneth D. Rose's The Beginning of the Age of Mammals analyzes the events that occurred directly before and after the mysterious K-T boundary which so quickly thrust mammals from obscurity to planetary dominance. Rose surveys the evolution of mammals, beginning with their origin from cynodont therapsids in the Mesozoic, contemporary with dinosaurs, through the early Cenozoic, with emphasis on the Paleocene and Eocene adaptive radiations of therian mammals. Focusing on the fossil record, he presents the anatomical evidence used to interpret behavior and phylogenetic relationships. The life's work of one of the most knowledgeable researchers in the field, this richly illustrated, magisterial book combines sound scientific principles and meticulous research and belongs on the shelf of every paleontologist and mammalogist.

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