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 ...
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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 ... 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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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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British museum. 1909. Presumed first. Hard Cover. Book: Good, gilt titles on spine, brown boards, library plates & stamps. 8.5x5.5. 346pp. 9 tissue-guarded b/w plates, some b/w illus.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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None. Very Good. A complete first edition set of this uncommon work regarding the Fossil Bryozoa in the British Museum. Bookplate to the front pastedown of all volumes 'Presented by the Trustees of The British Museum' and to the recto of front endpapers 'Newport Public Libraries Reference Department'. Occasional institutional stamps for this library. Â Illustrated, with seventeen plates to volume I, nine plates to volume II, eight plates to volume III, eight plates to volume IV. Â Collated, complete. Â An important geological work. Â This work was written by Professor John Walter Gregory, the British geologist and explorer. Gregory worked at the Natural History Museum for many years. This catalogue was one of the many publications by Gregory which includes but is not limited to his monograph on the 'Jurassic Corals of Cutch' and 'The Elements of Economic Geology'. In the original full cloth bindings. Externally, generally smart with light shelfwear to the extremities and to the head and tail of spine. Library shelf labels to the bottom of all spines. Small ink spill to the head of front board to volume I. Bookplates to the front pastedowns of all volumes and to the verso of front endpaper. Internally, firmly bound. Cockling to the first twelve pages of volume IV. Pages are bright with the occasional light spots. Several institutional stamps to the margins of pages. Very Good.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
