Appendix to the Manual of Mollusca: Of S. P. Woodward, A. L. S., Containing Such Recent and Fossil Shells as Are Not Mentioned in the Second Edition of That Work (Classic Reprint) - Tapa blanda
Sinopsis
Excerpt from Appendix to the Manual of Mollusca: Of S. P. Woodward, A. L. S., Containing Such Recent and Fossil Shells as Are Not Mentioned in the Second Edition of That Work
Shell fiask-shaped, smooth, transversely or longitudinally striated, or ornamented with annular folds, or plicated. The terminal cham ber (r) occupying the space above the air chambers (s), and extending down one side of nearly the whole length of the shell in the form of a wide and deep cavity, which is embraced by the decurrent edges of the in complete septa (four or five in number). This cavity also communicates at its base with a small siphuncle which traverses the minute apical air-chambers. Aperture of shell simple.
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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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Reseña del editor
Excerpt from Appendix to the Manual of Mollusca: Of S. P. Woodward, A. L. S., Containing Such Recent and Fossil Shells as Are Not Mentioned in the Second Edition of That Work
Shell fiask-shaped, smooth, transversely or longitudinally striated, or ornamented with annular folds, or plicated. The terminal cham ber (r) occupying the space above the air chambers (s), and extending down one side of nearly the whole length of the shell in the form of a wide and deep cavity, which is embraced by the decurrent edges of the in complete septa (four or five in number). This cavity also communicates at its base with a small siphuncle which traverses the minute apical air-chambers. Aperture of shell simple.
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.
Reseña del editor
Excerpt from Appendix to the Manual of Mollusca: Of S. P. Woodward, A. L. S., Containing Such Recent and Fossil Shells as Are Not Mentioned in the Second Edition of That Work
Pen corneous, thin, subovate, slightly concave below, and convex above. From behind the middle it narrows towards the front, the outline of the lateral margins being convex, while the posterior end is more or less obtusely angular. Apparently related to Beloteuthis and Teudopsis. (See p. 168.)
Family IV. - Belemnitidæ.
The Shell of Belemnites consists fundamentally of: -
1. A hollow cone, the phragmocone, Fig. 1, p, with a thin shelly wall, termed the conotheca, c, and which is divided by transverse septa, concave above and convex below, into chambers or loculi; the septa are perforated near the ventral margin by a siphuncle.
2. A guard or rostrum, g, more or less extensively enveloping the apical part of the phragmocone. "The phragmocone is not a chambered body made to fit into a conical hollow previously formed in the rostrum, as some have conjectured, but both rostrum and cone grew together; the former was formed on the exterior of a secretive surface, and the latter on the interior of another secretive surface." (Phillips.)
The rostrum is composed of calcareous matter arranged in fibres perpendicularly to the planes of the laminæ of growth.
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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Appendix to the Manual of Mollusca: Of S. P. Woodward, A. L. S.
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Paperback. Condición: New. Print on Demand. This book expands on the author's previous volume on the Mollusca, including such newly discovered species as Nautilus subtuberculatus. With illustrations and exhaustive descriptions of diverse genera and subgenera, the author provides an unparalleled resource for those interested in the field and a significant contribution to the ongoing study of Mollusca. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781332299201_0
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Appendix to the Manual of Mollusca : Of S. P. Woodward, A. L. S., Containing Such Recent and Fossil Shells as Are Not Mentioned in the Second Edition of That Work (Classic Reprint)
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ISBN 13: 9781332299201
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