Contributions from Walker Museum, Vol. 1

Contributions from Walker Museum, Vol. 1 : No. 10; (I) Atactocrinus, a New Crinoid Genus from the Richmond of Illinois; (2) Description of a Ste. Genevieve Limestone Fauna from Monroe County, Illinois (Classic Reprint)

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Excerpt from Contributions From Walker Museum, Vol. 1: No. 10; (I) Atactocrinus, a New Crinoid Genus From the Richmond of Illinois; (2) Description of a Ste. Genevieve Limestone Fauna From Monroe County, Illinois Among the fossils collected in the Richmond beds along the Kankakee River near Wilmington, Illinois, a peculiar form of subglobular or bead-like crinoid stem segment is not uncommon. Crinoid calyces, however, are exceedingly rare in the collections, and a single specimen only has come under the observation of the writer. It is not possible to establish, with certainty, the asso ciation of the bead-like joints and this single crinoid body as por tions of the same specific form, but it does seem altogether probable that they belong together. The Single example of a calyx which has been found is that of a Camerate crinoid, with several peculiar ities that difierentiate it from any of the already defined genera, and it is here described as a new generic form. 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.show more

Product details

  • Paperback | 34 pages
  • 152 x 229 x 2mm | 59g
  • Forgotten Books
  • United States
  • English
  • , black & white illustrations
  • 0243154976
  • 9780243154975