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Author : Henry Nathaniel Andrews
Publisher : Unknown
Page : 366 pages
File Size : 53,8 Mb
Release : 1970
Category : Paleobotany
ISBN : UIUC:30112027235255
Author : Henry Nathaniel Andrews
Publisher : Unknown
Page : 284 pages
File Size : 45,5 Mb
Release : 1955
Category : Paleobotany
ISBN : RUTGERS:39030031366976
Author : Dolan H. Eargle (Jr.),Henry Nathaniel Andrews
Publisher : Unknown
Page : 556 pages
File Size : 42,5 Mb
Release : 1949
Category : Fluorspar
ISBN : OSU:32435022088892
Author : Henry N. Andrews Jr.
Publisher : Forgotten Books
Page : 270 pages
File Size : 54,8 Mb
Release : 2018-01-09
Category : Science
ISBN : 0428659020
Excerpt from Index of Generic Names of Fossil Plants, 1820-1950 This work comprises an index of generic names of fossil plants, exclusive of the diatoms, that have been published from 1820 through 1950. It is based on the U. S. Geological Survey's working Compendium Index of Paleobotany and its ac companying bibliography. Although several hundred genera have been added by the author, it is realized that the list' is not complete, particularly for the past two decades. An attempt has been made to cite for each genus a type species, or one that is representative. In addition a brief notation is given concerning the age, geo graphic origin, and taxonomic status of most of the fossils. For some plants this information is further supplemented with such notations as seemed desirable to aid most effectively those persons who may have occasion to seek the type of in formation that is presented. It may be emphasized that this is not a critical study but is intended rather as an informational source concerning the origin of the respective generic concepts. The introduction includes a sketch of the historical origin of the Compendium and states in some detail the types of problems encountered in presenting the work in this form. The bibliography presents primarily the full citations of those references indicated in the index. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : Henry Nathaniel Andrews
Publisher : Unknown
Page : 400 pages
File Size : 47,7 Mb
Release : 1955
Category : Chromite
ISBN : STANFORD:36105001170534
Author : Henry Nathaniel Andrews
Publisher : Unknown
Page : 0 pages
File Size : 46,5 Mb
Release : 1955
Category : Paleobotany
ISBN : LCCN:gs55000218
Author : S. J.. Dijkstra,H. W. J. van Amerom
Publisher : Alexander Doweld
Page : 172 pages
File Size : 45,7 Mb
Release : 1983
Category : Science
ISBN : 9789062990092
Author : Anonim
Publisher : Alexander Doweld
Page : 134 pages
File Size : 47,9 Mb
Release : 2024-07-01
Category : Paleobotany
ISBN : 8210379456XXX
Author : Judith E. Winston
Publisher : Columbia University Press
Page : 541 pages
File Size : 55,6 Mb
Release : 1999-11-04
Category : Science
ISBN : 9780231506656
New species are discovered every day—and cataloguing all of them has grown into a nearly insurmountable task worldwide. Now, this definitive reference manual acts as a style guide for writing and filing species descriptions. New collecting techniques and new technology have led to a dramatic increase in the number of species that are discovered. Explorations of unstudied regions and new habitats for almost any group of organisms can result in a large number of new species discoveries—and hence the need to be described. Yet there is no one source a student or researcher can readily consult to learn the basic practical aspects of taxonomic procedures. Species description can present a variety of difficulties: Problems arise when new species are not given names because their discoverers do not know how to write a formal species description or when these species are poorly described. Biologists may also have to deal with nomenclatural problems created by previous workers or resulting from new information generated by their own research. This practical resource for scientists and students contains instructions and examples showing how to describe newly discovered species in both the animal and plant kingdoms. With special chapters on publishing taxonomic papers and on ecology in species description, as well as sections covering subspecies, genus-level, and higher taxa descriptions, Describing Species enhances any writer's taxonomic projects, reports, checklists, floras, faunal surveys, revisions, monographs, or guides. The volume is based on current versions of the International Codes of Zoological and Botanical Nomenclature and recognizes that systematics is a global and multicultural exercise. Though Describing Species has been written for an English-speaking audience, it is useful anywhere Taxonomy is spoken and will be a valuable tool for professionals and students in zoology, botany, ecology, paleontology, and other fields of biology.
Author : S. J. Dijkstra,H. W. J. van Amerom
Publisher : Alexander Doweld
Page : 151 pages
File Size : 54,7 Mb
Release : 1997
Category : Bryophytes, Fossil
ISBN : 9789073348653
Author : Anonim
Publisher : Unknown
Page : 72 pages
File Size : 41,5 Mb
Release : 1982
Category : Geology
ISBN : RUTGERS:39030041186653
Author : Anonim
Publisher : Alexander Doweld
Page : 193 pages
File Size : 51,8 Mb
Release : 1994
Category : Electronic
ISBN : 9789062991358
Author : Eugene L. Boudette
Publisher : Unknown
Page : 716 pages
File Size : 49,5 Mb
Release : 1972
Category : Geology
ISBN : IND:30000146957240
Author : David J. McLaughlin,Joseph W. Spatafora
Publisher : Springer Science & Business Media
Page : 269 pages
File Size : 44,6 Mb
Release : 2013-03-14
Category : Science
ISBN : 9783662101896
Mycology, the study of fungi, originated as a subdiscipline of botany and was a des criptive discipline, largely neglected as an experimental science until the early years of this century. A seminal paper by Blakeslee in 1904 provided evidence for self incompatibility, termed "heterothallism", and stimulated interest in studies related to the control of sexual reproduction in fungi by mating-type specificities. Soon to follow was the demonstration that sexually reproducing fungi exhibit Mendelian inheritance and that it was possible to conduct formal genetic analysis with fungi. The names Burgetf, Kniep and Lindegren are all associated with this early period of fungal genet ics research. These studies and the discovery of penicillin by Fleming, who shared a Nobel Prize in 1945, provided further impetus for experimental research with fungi. Thus began a period of interest in mutation induction and analysis of mutants for biochemical traits. Such fundamental research, conducted largely with Neurospora crassa, led to the one gene: one enzyme hypothesis and to a second Nobel Prize for fungal research awarded to Beadle and Tatum in 1958. Fundamental research in biochemical genetics was extended to other fungi, especially to Saccharomyces cerevisiae, and by the mid-1960s fungal systems were much favored for studies in eukaryotic molecular biology and were soon able to compete with bacterial systems in the molecular arena.
Author : S. J. Dijkstra,H. W. J. van Ameron
Publisher : Alexander Doweld
Page : 174 pages
File Size : 55,6 Mb
Release : 1994
Category : Lycopodiales, Fossil
ISBN : 9789062991136