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Bulletins of American Paleontology 78 (310-311) uu BULLETINS OF AMERICAN PALEONTOLOGY VOLUME 78 1980 Paleontological Research Institution Ithaca, New York 14850 U. S. A. CONTENTS OF VOLUME 78 Bulletin No. Pages Plates 310. Paleogene Marine Gastropods of the Keasey.. Formation in Oregon By Carole S. Hickman 1-112 1-10 311. Fossil Lepadomorph, Brachylepadomorph, and Verrucomorph Barnacles (Cirripedia) of the Americas By Norman E. Weisbord 113-212 11-23 INDEX No separate index is included in the volume. Each number is indexed separately. Contents of the volume are listed in the begin- ing of the volume. MUS. COMP. ZOOL BULLETINS JUN 121! OF AMERICAN PALEONTOLOGY (Founded 1895) Vor. 78 No. 310 PALEOGENE MARINE GASTROPODS OF THE KEASEY FORMATION IN OREGON By Carole S. Hickman 1980 Paleontoiogical Research Institution Ithaca. New York 14850 11. S. A. PALEONTOLOGICAL RESEARCH INSTITUTION Officers President _ Duane O. LeRoy Vice-President John Pojeta, Jr. Secretary Philip C. 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Johnson Harold E. Yokes David B. Jones Christine C. Wakeley Peter Jung Philip C. Wakeley Caroline H. Kierstead Norman E. Weisbord Membership dues, subscriptions, and contributions are all important sources of funding, and allow the Paleontological Research Institution to continue its existing programs and services. The P. R. I. publishes two series of respected paleontological monographs, Bulletins of American Paleontology and Palaeontographica Americana, that give authors a relatively inexpensive outlet for the publication of significant longer manuscripts. In addition, it reprints rare but important older works from the paleontological literature. The P. R. 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A. 607-273-6623 BULLETINS OF AMERICAN PALEONTOLOGY (Founded 1895) Vol. 78 No. 310 PALEOGENE MARINE GASTROPODS OF THE KEASEY FORMATION IN OREGON By Carole S. Hickman May 29, 1980 Paleontological Research Institution Ithaca, New York 14850 U. S. A. Library of Congress Card Number: 80-81700 Printed in the United States of America Arnold Printing Corporation Ithaca, NY 14850 USA CONTENTS Page Abstract ._ 5 Introduction — 5 Acknowledgments - _ _ 6 Gastropod Fauna of the Keasey Formation — 7 Biostratigraphy of the Keasey Formation Lower Member -_ 10 Lower Middle Member _ 11 Upper Middle Member .... 12 Upper Member _.. _- 13 Abbreviations -_ 13 Systematic Paleontology Fami ly Acmaeidae __ 14 Fami ly Trochidae .._ 16 Fami ly Turbinidae -_ 22 Fami ly Turritellidae _ 23 Fami ly Epitoniidae — .._ 26 Fam ly Eulimidae ._. 32 Fami ly Calyptraeidae ._ 33 Fami ly Naticidae _-. 34 Fami ly Cassidae _ 41 Fami ly Cymatiidae —_ .._ 45 Fami ly Bursidae .-_ 48 Fami ly Ficidae .._ 49 Fami ly Columbariidae -._ 50 Fami ly Muricidae _. .._ 53 Fami ly Buccinidae .... 55 Fami ly Neptuneidae .. .- 55 ?Fami ly Nassariidae .. .._ 58 Fami ly Fasciolariidae ._ 58 Fami ly Volutomitridae -_ 62 Fami ly Olividae _.. 64 Fami ly Marginellidae .._ 65 Fami ly Cancellariidae _ 67 Fam ly Conidae — 77 Fami ly Turridae -- 80 Fami ly Pyramidellidae _-. 81 Fami ly Scaphandridae --_ 81 Literature Cited -- 83 Plates ... 90 Index — 100 LIST OF ILLUSTRATIONS Text-figure Page 1. Stratigraphic ranges of gastropod species in the Keasey Formation and composite columnar section between 10 and 11 2. Spiral ornamentation and distinctive bisinuate growth line of Turritella keaseyensis n. sp. 25 3. Characteristics of the anterior siphonal notch and siphonal fasciole in the genus Echinophoria 42 4. Comparison of whorl profiles and shoulder slope ornamentation patterns of two species of Fulgurofusus Grabau 52 5. Comparison of spiral ornamentation patterns and whorl profiles of five cancellariid species from the Keasey Formation 70 PALEOGENE MARINE GASTROPODS OF THE KEASEY FORMATION IN OREGON By Carole S. Hickman Department of Paleontology University of California Berkeley, California 94720 ABSTRACT Sixty-eight gastropod species (8 archaeogastropods, 20 mesogastropods, 37 neogastropods, 3 opisthobranchs) are described and illustrated from the late Eocene to early Oligocene bathyal mollusk fauna of the Keasey Formation in northwestern Oregon, and time-equivalent beds in southwestern Washington. Twenty-three species are described as new: Acmaea vokesi, Bathybembix nitor, Margaritcs (Margarites) sericcus, Solariella (Machaeroplax) cicca, Turritella keascyensis, Epitonium (Boreoscala) ivyattdurhami, "Fusitriton" terrysmithae, Fulgurofusus scrratus, Trophonopsis platacantha, Colus ? precursor, Fusinus dilleri, Exilia hentsonae, Conomitra vcrnoniana, Ancilla (Spirancilla) vernisa, Granula profun Jorum, Bonellitia (Boncllctia) smithivickeitsis, Bonelletia (Admet- ula) tumida, S-veltella exiliplex, S-veltclla ? kcaseyeiisis, "Admete" umbilicata, Conus iveltojii, Cotius armentrouti, and Scaphander impunciafus. Two recurring bathyal gastropod association types are represented in the Keasey Formation: one a species-dominant association type characterized by numerous large-shelled trochids of the genus Bathybembix s. L, and the other a species-diverse association type containing as many as seven species of turrid gastropods.
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