Download or read book The Oligocene Rodent Ischyromys in Relation to the Paleosols of the Brule Formation written by John Alfred Howe and published by . This book was released on 1956 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Oligocene Rodent Ischyromys and Discussion of the Family Ischyromyidae written by Craig Call Black and published by . This book was released on 1967 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Punctuated Equilibrium written by Stephen Jay GOULD and published by Harvard University Press. This book was released on 2009-06-30 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1972 Stephen Jay Gould took the scientific world by storm with his paper on punctuated equilibrium. Challenging a core assumption of Darwin's theory of evolution, it launched the controversial idea that the majority of species originates in geological moments (punctuations) and persists in stasis. Now, thirty-five years later, Punctuated Equilibrium offers his only book-length testament on a theory he fiercely promoted, repeatedly refined, and tirelessly defended.
Download or read book The Structure of Evolutionary Theory written by Stephen Jay Gould and published by Harvard University Press. This book was released on 2002-03-21 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world’s most revered and eloquent interpreter of evolutionary ideas offers here a work of explanatory force unprecedented in our time—a landmark publication, both for its historical sweep and for its scientific vision. With characteristic attention to detail, Stephen Jay Gould first describes the content and discusses the history and origins of the three core commitments of classical Darwinism: that natural selection works on organisms, not genes or species; that it is almost exclusively the mechanism of adaptive evolutionary change; and that these changes are incremental, not drastic. Next, he examines the three critiques that currently challenge this classic Darwinian edifice: that selection operates on multiple levels, from the gene to the group; that evolution proceeds by a variety of mechanisms, not just natural selection; and that causes operating at broader scales, including catastrophes, have figured prominently in the course of evolution. Then, in a stunning tour de force that will likely stimulate discussion and debate for decades, Gould proposes his own system for integrating these classical commitments and contemporary critiques into a new structure of evolutionary thought. In 2001 the Library of Congress named Stephen Jay Gould one of America’s eighty-three Living Legends—people who embody the “quintessentially American ideal of individual creativity, conviction, dedication, and exuberance.” Each of these qualities finds full expression in this peerless work, the likes of which the scientific world has not seen—and may not see again—for well over a century.
Download or read book The Oligocene Rodent Ischyromys and Discussion of the Family Ischyromyidae written by Craig Call Black and published by . This book was released on 1968 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Oligocene Rodents of North America written by Albert Elmer Wood and published by Philadelphia : American Philosophical Society. This book was released on 1980 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Oligocene Rodent Ischyromys and Discussion of the Family Ischyromydae written by Craig C. Black and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late Eocene and Oligocene Paleosols from Badlands National Park South Dakota written by Greg John Retallack and published by Geological Society of America. This book was released on 1983 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rodents Mammalia from Fitter Ranch Brule Formation Oligocene North Dakota written by William W. Korth and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The National Union Catalog written by and published by . This book was released on 1961 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oligocene Rodents of the Genus Ischyromys written by Edward L.. Troxell and published by . This book was released on 1922 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rodents Mammalia from Fitterer Ranch Brule Formation Oligocene North Dakota written by William W. Korth and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Eighteen rodent species are recognized from the Fitterer Ranch fauna of North Dakota on the basis of more than a thousand collected specimens. Of the species recognized, four are new: the prosciurine aplodontiids Prosciurus hogansoni and Altasciurus leonardi, the heliscomyid Heliscomys borealis, and the cricetid Eumys lammersi. A previously described castorid from this fauna, Oligotheriomys primus Korth, 1998, is considered a synonym of "Eutypomys" magnus Wood, 1937, on the basis of the recovery of lower dentitions but is retained in the genus Oligotheriomys. A single specimen is questionably referred to Microparamys, a genus elsewhere limited to the Eocene (Clarkforkian-Chadronian land mammal ages). The rodent fauna appears to be a combination of predominantly Orellan and Whitneyan species (early Oligocene), suggesting that the section might transcend the Orellan-Whitneyan boundary. However, the rodent fauna does not alter significantly from the lowest to the highest horizons."--Provided by publisher.
Download or read book National Union Catalog written by and published by . This book was released on 1958 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water and Natural Resources in South Dakota written by Michael Meyer and published by . This book was released on 1983 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Nebraska Geology 1843 1976 written by John H. Sandy and published by . This book was released on 1983 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Local Variability in Early Oligocene Paleosols as a Result of Ancient Soil Catenary Processes Brule Formation Toadstool Park Nebraska written by Raymond Kennedy and published by . This book was released on 2011 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paleopedology is often employed in paleoenvironmental reconstructions because the features of paleosols are affected by changes in climate, ecology, topography, and lithology over time. These changes cause small-scale variations in the morphology and apparent development of paleosols and influence the degree to which certain soil features are preserved in the rock record. When drawing inferences about paleoenvironments based on paleosols, care must be taken to ensure that as many of the soil forming factors as possible are understood. Whereas climates can be ignored over small areas, and lithology represents the medium of soil preservation, topographic relief can vary dramatically over local scales, thereby influencing the partitioning of plant communities and contributing greatly to the development of soils. In this study, paleo-geomorphological relationships were investigated along a paleovalley sequence in the Early Oligocene Orella Member of the Brule Formation in the White River G.
Download or read book Investigation of the Classification of the Rodent Genus Eumys From the Middle Oligocene of the Big Badlands of South Dakota Using Multivariate Statistical Analysis written by Field Museum of Natural History and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
