Excerpt from A Phylogenetic Classification of Animals: For the Use of Students As it is intended to be used along with a good text-book, or as a supplement to a course of lectures on Zoology, no attempt has been made to give the characters of the various groups, and the facts of Anatomy and Embryology are only referred to when they indicate the probable course of Phylogeny. Most attention has been devoted to hypothetical ancestral forms which are rarely, if ever, mentioned in the text-books. 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.