The Paleontology Of Tne Niagaran Limestone In The Chicago Area

Author : Stuart Weller
Publisher :
ISBN 13 : 9781331942221
Total Pages : 224 pages
Book Rating : 4.9/5 (422 download)

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Download or read book The Paleontology of the Niagaran Limestone in the Chicago Area, Vol. 1 written by Stuart Weller and published by . This book was released on 2015-07-21 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Paleontology of the Niagaran Limestone in the Chicago Area, Vol. 1: The Crinoidea The report on the paleontology of the area covered by The Natural History Survey, will be issued in parts, prepared by Mr. Stuart Weller, of the University of Chicago, and will constitute Bulletin No. IV. The first part, on the Crinoidea, will be followed by the others as soon as the necessary material can be studied. This report is of special interest and importance, as the researches of the writer have enabled him to describe one new genus and twenty-seven new species. The genus has been named Chicagocrinus in honor of the city of Chicago. The illustrations were prepared by Mr. Weller, and are worthy of especial notice. These, together with the text, will furnish a manual on the subject for the use of students in local investigations. The territory covered by the survey includes Cook and Du Page counties and the nine north townships of Will County, in Illinois, with a portion of Lake County, Indiana. This gives an area of about forty-eight or fifty miles square, or a land surface of nearly 1,800 square miles. While the fossil bearing strata are not generally exposed in this district, such localities as offer opportunities for research are rich in the number and variety of specimens. Besides the material collected and studied in the institutions mentioned by Mr. Weller, the present work is essentially based on the Egan collection of The Chicago Academy of Sciences. This valuable collection of fossils consists of over 12,000 specimens, representing something more than 1,600 species; 4,000 specimens of these, including a large number of species, are from Chicago. The board of managers desires to acknowledge its obligation to the University of Chicago, the Field Columbian Museum, the Northwestern University, as well as to the individuals whose courtesy to Mr. Weller greatly facilitated the work of preparing this report. Especial mention should be made of the generosity of our patron, Mr. George H. Laflin, whose continued interest in the work of the Academy has made it possible to issue the present publication. 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.