Elementary Text-Book of Zoology, Vol. 2: Special Part: Mollusca to Man; With 215 Woodcuts (Classic Reprint) - Couverture souple

Claus, C.

Couverture souple

ISBN 10 : 1330263855 ISBN 13 : 9781330263853

Editeur : Forgotten Books, 2019

A propos du livre

Présentation de l'éditeur

Bilaterally symmetrical unsegmented animals, without a locomotory skeleton; with a ventral foot and usually a calcareous univalve or bivalve shell; with brain (supracesophageal ganglia), circumoesophageal ring, and subo sophageal group of ganglia. SINCE Cuvier several different groups of animals, which were placed amongst the worms by Linnaeus, have been included in theM ollusc. Of late years, however, the anatomy and development of hese forms have been more closely examined, and it seems fairly certain that some of them are allied to theW orms. In any case, the group Mollusca must be looked upon as of more limited extent than has for FIG. 492. Older larva of a Oasteropod .i ,1 rm i i -i (after Gregenbaur). S, Shell; P, some time been the case. The bivalved Joot. Frfvelum; r, tentacles; 0P, Erachiopoda, which in structure and opercuium for the closure of the development stand in closer relationship to theB ryozoa,, may be removed from theM ollusca and united with the latter under the head Molluscoidea. The Tunicata also must be constituted an independent group between theM ollusca and the Vertebrata. G. Cuvier, Memoires pour servir a 1histoire et 1anatomie desM ollusques. Paris, 1817. K. Leuckart, Ueber dieM orphologic und die Verwandschaftsverhaltnisse der wirbellosen Thiere. Braunschweig, 1848. Huxley, On theM orphology of the Cephalous Mollusca, as illustrated by the Anatomy of certain Heteropoda and Pteropoda, etc. Phil. Trans.,
(Typographical errors above are due to OCR software and don't occur in the book.)

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Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2019
• Langue: anglais
• ISBN 10: 1330263855
• ISBN 13: 9781330263853
• Reliure: Broché
• Nombre de pages: 356
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