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OCR for page R1
• 720 .N3 1936 Nations! Research Council (U.S.). Division o£ Geology, Report o£ the committee on psleoecology, T9S5-19S6 1 :.

OCR for page R1
NATIONAL RESEARCH COUMCIL DIVISION OF GEOLOGY AND GEOGRAPHY WASHINGTON, D. C. REPORT OF THE COMMITTEE ON PALEOECOLOGY 1935-1936 (Appendix J of Annual Report of Division) Committee Members W. H. Twenhofel, Chairman Paul Bartsch G. Arthur Cooper E. W. Berry J. Edward Hoffraeister E. C. Case M. W. de Laubenfels Austin H. Clark Percy E. Raymond

OCR for page R1
CONTENTS Page Organisms and their Environment - W. H. Twenhofel 1 Paleoecology of the Vertebrates - E. C. Case 10 Paleoecology of tie Arthropoda - Percy E. Raymond 22 and Habits of Trilobites - Willian E. Scheville 29 The Oecology of Porifera, and Possibilities of Deductions As to the Paleoecology of Sponges from their Fossils - M. W. do Laubenf els 44 Paleozoic Plants and their Environmental Relations - Chester A. Arnold 55