Download or read book Mollusca of the Southwestern States written by Henry Augustus Pilsbry and published by . This book was released on 1905 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mollusca of the Southwestern States I XI written by Henry Augustus Pilsbry and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mollusca of the Southwestern States XI written by Henry Augustus Pilsbry and published by . This book was released on 19?? with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MOLLUSCA OF THE SOUTHWESTERN S written by Henry Augustus B. 1862 Pilsbry and published by . This book was released on 2016-08-29 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mollusks of the Arid Southwest written by Joseph Charles Bequaert and published by . This book was released on 1973 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeography of the Quaternary Molluscs of the Southwestern Atlantic Ocean written by Sergio Martínez and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Quaternary comprises a brief time in the Earth’s history, and apart from a few exceptions, molluscan assemblages recovered from exposures along the coast of Southwestern South America (Southern Brazil, Uruguay, Argentina) are essentially the same than those that inhabit the region today, leading to the assumption that no important change in the distribution of the faunas since Pleistocene times has occurred. However, the good taxonomic and temporal resolution reached in the last years, allowed us to detect some biogeographic changes, although traditional biogeographic units remain the same (i.e. Magellanic and Argentinean Provinces). These modifications involve mainly variations in the taxonomic composition of the assemblages and in the southern boundaries of some species distributions (extralimital species), today retracted northwards. These changes are related to southward shifts of the warm waters of the Brazilian Current, correlated with global warm peaks. This phenomenon was more intense in the Late Pleistocene (MIS 5e) and in the Holocene between ca. 6500-3500 14C yr.
Download or read book Mollusca of the Southwestern States I X written by Henry Augustus Pilsbry and published by Rarebooksclub.com. This book was released on 2013-09 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...has about 38.1.38 teeth. The ectocones are developed on central and lateral teeth. From the twentyfourth or twenty-fifth teeth outward from the middle the inner cusp is bifid. The ectocones are unsplit. A central and two lateral teeth are shown. This snail, so far as the shell is concerned, would be referred without hesitation to A. chiricahuana; the differences being less than the ordinary range of individual variation in Ashmunella or Polygyra; but the genitalia are so utterly unlike in the two forms that it is obvious that they are not even nearly related. From the granulation and the weak traces of teeth it seems that A. metamorphosa is probably a toothless derivative of the A. levettei stock; I regret that I have no alcoholic specimens of A. levettei or A. l. heterodonta for comparison. A. esuritor differs from metamorphosa by its angular or distinctly subangular periphery, rougher surface when perfectly fresh, and perhaps somewhat wider umbilicus; but it must be admitted that the two forms are so similar that their distinction may be diflicult without an examination of the soft parts. The genitalia, however, are so very different that the two species cannot even be closely related. They must be independent derivatives from toothed ancestral forms. I dissected two of the three specimens received. They could be extracted only by breaking into the shell. Having been preserved in alcohol without drowning the specimens were much more contracted than the A. chiricahuana and A. esuretor I examined. A somewhat extensive experience with snails in all conditions of preservation has shown that beyond a moderate diminution of the absolute size, the characters of the genitalia are not altered by preservation of the animal in strong alcohol....
Download or read book Mollusca of the Southwestern States Vol 1 written by Henry A. Pilsbry and published by Forgotten Books. This book was released on 2016-12-23 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Mollusca of the Southwestern States, Vol. 1: Urocoptidae; Helicidae of Arizona and New Mexico It is unfortunate that no good t0pographic survey of southern Ari zona has been published. It is extremely difficult at present to deter mine some localities given by previous naturalists, or to clearly indi cate the positions of those explored by Mr. Ferriss. The accompanying sketch of the canyons explored in the Huachucas makes no pretensions to cartographic accuracy beyond showing the relative positions of the localities mentioned in the text. From Fort Huachuca to Ramsey Canyon is 10 miles; to Carr Canyon 14, and to Miller Canyon 20 miles. Manilla mine is 6 miles from Fort Huachuca. The range is about 30 miles long and 6 wide. 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."
Download or read book The Mollusks of the Arid Southwest with an Arizona Check List written by Joseph C. Bequaert and published by . This book was released on 1973 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mollusca of the Southwestern States Vol 1 written by Henry A. Pilsbry and published by Forgotten Books. This book was released on 2018-02-10 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Mollusca of the Southwestern States, Vol. 1: Urocoptidae; Helicidae of Arizona and New Mexico In these papers the mollusks collected by Mr. James H. Ferriss and the writer in the expedition made in 1903 and by Mr. Ferriss in two visits to Arizona in 1902 and 1904 will be discussed. The present contri bution deals chiefly with Mr. Ferriss' researches in Arizona, where an extraordinarily rich and varied snail fauna was found in the canyons of the Chiricahua and Huachuca Mountains. In the study of these mate rials I have worked over many specimens received from the late E. H. Ashmun, who first made known to us the richness of the Arizona snail fauna, and from Prof. T. D. A. Cockerell, Whose unceasing labors on the fauna and flora of New Mexico are familiar to all naturalists. The treatment of the genus Ashmunella has been made practically mono graphic. It is unfortunate that no good t0pographic survey of southern Ari zona has been published. It is extremely difficult at present to deter mine some localities given by previous naturalists, or to clearly indi cate the positions of those explored by Mr. Ferriss. The accompanying sketch of the canyons explored in the Huachucas makes no pretensions to cartographic accuracy beyond showing the relative positions of the localities mentioned in the text. From Fort Huachuca to Ramsey Canyon is 10 miles; to Carr Canyon 14, and to Miller Canyon 20 miles. Manilla mine is 6 miles from Fort Huachuca. The range is about 30 miles long and 6 wide. 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.
Download or read book Mollusca of the Southwestern States written by Henry Augustus Pilsbry and published by . This book was released on 1905 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Species of Mollusca from the Eocene Deposits of Southwestern Texas written by Julia Anna Gardner and published by . This book was released on 1923 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Marine Mollusca and Their Value in Reconstructing Prehistoric Trade Routes in the American Southwest written by Chester S. Chard and published by . This book was released on 1940 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Desmoinesian Brachiopoda and Mollusca from Southwest Missouri written by Richard David Hoare and published by . This book was released on 2012-05-01 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Marine Mollusca and Their Value in Reconstructing Prehistoric Trade Routes in the American Southwest written by Donald Bayley Tower and published by . This book was released on 1945 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Desmoinesian Brachiopoda and Mollusca from Southwest Missouri written by Richard David Hoare and published by . This book was released on 1961 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the Freshwater Univalve Mollusca of the United States Including Notices of Species in other Parts of North America written by S. Stehman Haldeman and published by . This book was released on 1870 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
