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Excerpt from Fossil Sponge Spicules: From the Upper Chalk Found in the Interior of a Single Flint-Stone From Horstead in Norfolk In the following pages I have attempted to give a description of the forms and affinities of a number of sponge spicules which were present, with a number of other organic remains, detached and heterogenously mingled together, in the cavity of a single flint stone, from strata of the Upper Chalk Formation, at Hor stead, a village but a few miles distant from the city of Norwich, England. 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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Fossil and Recent Sponges contains articles on taxonomic, phylogenetic and ecological aspects of sponges of both biological and paleontological interest. They focus on three main topics: phylogeny and systematics, biology, and paleoecology of sponges. The reader is offered an overview over the most important aspects of current sponge research: - establishment of a new taxonomy based on mono phyletic groups (phylogenetic systematics) including recent and fossil taxa - new concepts of the biomineralisation of sponge skeletons - palaeoenvironmental analysis of fossil sponge buildups.