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Excerpt from Studies on the Cyclostomata Operculata
Many years ago I undertook a study of the Danish cretaceous Bryozoa the results of which have not yet been published, and among the species studied by me were also a small number belonging to the family Melicerititidae (eleidae d'orb.) to the members of which d'orbigny ascribes a calcareous operculum the presence of which, however, has been denied by all the later authors who interprete the supposed Operculum as a closure-plate of the same nature as that which has been found both in the Cyclostomata and the Cheilosiomata. I came however to the result that d'orbigny was right in his interpretation of the named structure, and I have published some remarks on this subject in my preliminary communication >studies on Bryozoa< As later I wished to make a more comprehensive study of this interesting group I extended my investigations 'over a number of foreign species, and in this effort I have been supported by several colleagues abroad. In the first instance I owe a debt of gratitude to Dr. F. Canu the author of so many valuable works on fossil Bryozoa, who has not only sent to me a large number of French species defined by him, but also helped me to acquire materials containing cretaceous bryozoa from a number of French localities. Asimilar material from a few other French localities has been' sent me by Mr. G. Dollfus, and to Mr. M. Filiozat who has made a special study of the cretaceous Bryozoa from Vendome I owe the possession of a number of species from that locality. For the gift or loan of specimens I am also indebted to Mr. A. W. Waters, Dr. E. Pergens, Prof. Dr. G. Steinmann, Bonn and Prof. Dr. H. Wegner, Munster, and lastly I have been able to acquire a collection of cretaceous Bryozoa from the Chatham chalk, by the aid of Mr. W. Gamble. To all these gentlemen I offer my sincere thanks.
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Studies on the Cyclostomata Operculata (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book offers readers a meticulous examination of a particular group of invertebrate animals belonging to the phylum Bryozoa, commonly known as "moss animals." As part of a larger series of works devoted to classifying and understanding the natural world, this book delves into the morphological characteristics, diversity, and evolutionary history of these tiny creatures. The author, a renowned expert in the field, provides a thorough analysis of the animals' physical structure, including their unique feeding and reproductive mechanisms. The book also explores the broader context of Bryozoa's place within the animal kingdom, discussing their relationships to other invertebrate groups and their ecological significance in aquatic ecosystems. One of the key strengths of this book is its detailed examination of the Bryozoa's fossil record. Through the study of preserved specimens, the author delves into the evolutionary history of these animals, tracing their origins and diversification over millions of years. This paleontological perspective provides insights into the changing environmental conditions and ecological interactions that have shaped the evolution of Bryozoa. Overall, this book is a valuable resource for anyone interested in the intricate world of Bryozoa. It offers a comprehensive overview of their biology, systematics, and evolutionary history, making it an essential reference for researchers, students, and anyone fascinated by the beauty and complexity of nature. 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. Bestandsnummer des Verkäufers 9781333761769_0
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