North American Early Tertiary Bryozoa

Excerpt from North American Early Tertiary Bryozoa: Plates Surface of the Eocene form of this species, X 20, and a zooecium more highly magnified. (after Ulrich, Surface of a fragment, X 20. Another fragment, X 20, with vibracular zooecia along the margin. Lowest Eocene (bryozoan bed at base of Aquia formation): Upper Marlboro, Maryland. Cat. No. 63785, Four fragments of the bifoliate zoarium, natural size. One preserves the expanded base. Edge of a zoarium, X 20, exhibiting both vibracular and hydrostatic zooecia. Another specimen, X 20. With vibracular zooecia only. Along the margin. Transverse section. X 20. Tangential thin section of a zooecium, X 100, showing olocystal structure. Tangential thin section of a vibracular zooecium, X 100. View of the interior of the zooecia, X 20, showing one distal and two lateral septulae. Interior of the hydrostatic zooecia, X 20. The aperture is replaced by a small pore. Interior of the ordinary zooecia, X 20. A collar with two small lateral grooves is shown in the aperture. Longitudinal section, X 20, showing the lateral scptulae. Portion of a branch, X 20, in which hydrostatic zooecia occupy the entire breadth. A fragment, X 25, with numerous ovicelled zooecia. Cretaceous (vincentown) Vincentown, New Jersey Cat. No. 63786. 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.

Excerpt from North American Early Tertiary Bryozoa: Text The scientific publications of the United States National Museum consist of two series, the Proceedings and the Bulletins. 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.

This listing of North American bryozoa from the Early Tertiary has been split into two volumes representing the Text and the Plates. Plates are accompanied by explanatory notes.