Catalogue of the Fossil Bryozoa (Polyzoa) in the Department of Geology, British Museum (Natural History).
Author: British Museum (Natural History). Department of Geology
Publisher:
Published: 1899
Total Pages: 572
ISBN-13:
DOWNLOAD EBOOK →Author: British Museum (Natural History). Department of Geology
Publisher:
Published: 1899
Total Pages: 572
ISBN-13:
DOWNLOAD EBOOK →Author: British Museum (Natural History). Dept. of Geology
Publisher:
Published: 1899
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOK →Author: J. W. Gregory
Publisher: Forgotten Books
Published: 2018-01-31
Total Pages: 304
ISBN-13: 9780267392346
DOWNLOAD EBOOK →Excerpt from Catalogue of the Fossil Bryozoa: In the Department of Geology British Museum (Natural History), The Jurassic Bryozoa To the zoologist, who can base his classification upon the soft parts of the animal, as well as upon the hard, these tubicolar forms present no exceptional difficulties. They are, indeed, of especial interest, for they show how close a resemblance may exist between animals of different groups, owing to adaptation to suit the same conditions of life; and they supply the most emphatic warning that similarity in structure does not always imply community of origin. To the palaeontologist, however, who cannot check his con elusions by the evidence of vascular anatomy or embryology, these tube-dwelling animals are a vexation and a puzzle. There is so frequently no correlation between the structure of the tube and of the creature that made it. Hence the vast majority of the fossil worm tubes are now ignored by palaeontologists; their study has been abandoned in despair, for, so far as we can see at present, they can give no aid in the classification of the group to which they belong, or in tracing its life history. In the study of the Jurassic Bryozoa we are faced by the initial difficulty that their shells are tubular. In periods earlier than the Jurassic, many of the Bryozoa belonged to the order Cryptostomata; and in later times the order Cheilostomata was well represented. In these two groups the skeletons of the individual members of the colony are complex, and offer fairly reliable diagnostic characters. But in Jurassic times the former order was extinct, and the latter was represented by only two rare species; per cent. Of the forms have left no traces, except their tubular skeletons. Nevertheless, these fossils cannot be ignored like the worms, for, with the two exceptions noted, they belong to orders either wholly extinct or now of dwindling importance. Their evidence, therefore, must be considered in any attempt to trace the evolution of the Bryozoa. 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: British Museum (Natural History). Department of Geology
Publisher:
Published: 1899
Total Pages:
ISBN-13:
DOWNLOAD EBOOK →Author: British Museum (Natural History). Department of Geology
Publisher:
Published: 1922
Total Pages: 404
ISBN-13:
DOWNLOAD EBOOK →Author: John Walter Gregory
Publisher: Legare Street Press
Published: 2023-07-18
Total Pages: 0
ISBN-13: 9781022472020
DOWNLOAD EBOOK →This catalogue provides a comprehensive list of Jurassic bryozoa fossils found in the British Museum. Detailed descriptions and images of each fossil are included, making it an invaluable reference for researchers, students, and fossil enthusiasts. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.