Palaeontographical Society, 1853, Vol. 7

Palaeontographical Society, 1853, Vol. 7 : Fossil Corals of Great Britain, Part IV; Fossil Brachiopoda of Great Britain, Part IV. with a General Introduction; Fossil Shells of the Chalk, Part I.-Cephalopoda; Mollusca of the Great Oolite, Part II-Bivalves

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Excerpt from Palaeontographical Society, 1853, Vol. 7: Fossil Corals of Great Britain, Part IV; Fossil Brachiopoda of Great Britain, Part IV. With a General Introduction; Fossil Shells of the Chalk, Part I.-Cephalopoda; Mollusca of the Great Oolite, Part II-Bivalves Generic G'6awcier. Shell equivalve, sub-equilateral, more or less heart-shaped; generally closed, sometimes gaping posteriorly: usually inflated, orbicular, or ovate, costated, costae variable, from nearly obsolete to large and prominent, sharp, round and naked, often ornamented with scales or tubercles; margin dentated or crenulated; hinge composed of two cardinal teeth in each valve, and two remote and prominent lateral teeth. Ligament external. Impression of the mantle without a sinus. Animal of the general form of the shell, its mantle open in front, with the margins generally plain, occasionally fringed, particularly towards the posterior, and around the syphons; these are short, and slightly separated, with the margins of one or both always fringed; foot large, sub-cylindrical, and bent at nearly a right angle, possessing the form of an inflected arm or elbow-joint. 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.
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Product details

  • Paperback | 626 pages
  • 152 x 229 x 32mm | 826g
  • English
  • 158 Illustrations; Illustrations, black and white
  • 0243227167
  • 9780243227167