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The Case of the Diminutive Trilobite Flexicalymene Retrorsa Minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati Region
EVOLUTION & DEVELOPMENT 9:5, 483–498 (2007) Evaluating paedomorphic heterochrony in trilobites: the case of the diminutive trilobite Flexicalymene retrorsa minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati region Brenda R. Hundaa,Ã and Nigel C. Hughesb aCincinnati Museum Center, 1301 Western Avenue, Cincinnati, OH 45203, USA bDepartment of Earth Sciences, University of California, Riverside, CA 92521, USA ÃAuthor for correspondence (email: [email protected]) SUMMARY Flexicalymene retrorsa minuens from the upper- rate of progress along a common ontogenetic trajectory with most 3 m of the Waynesville Formation of the Cincinnatian respect to size, coupled with growth cessation at a small size, Series (Upper Ordovician) of North America lived ‘‘sequential’’ progenesis, or non-uniform changes in the rate of approximately 445 Ma and exhibited marked reduction in progress along a shared ontogenetic trajectory with respect to maximum size relative to its stratigraphically subjacent sister size, can also be rejected. Rather, differences between these subspecies, Flexicalymene retrorsa retrorsa. Phylogenetic subspecies are more consistent with localized changes in analysis is consistent with the notion that F. retrorsa retrorsa rates of character development than with a global hetero- was the ancestor of F. retrorsa minuens. F. retrorsa minuens chronic modification of the ancestral ontogeny. The evolution has been claimed to differ from F. retrorsa retrorsa ‘‘in size of F. retrorsa minuens from F. retrorsa retrorsa was largely alone,’’ and thus presents a plausible example of global dominated by modifications of the development of characters paedomorphic evolution in trilobites. Despite strong similarity already evident in the ancestral ontogeny, not by the origin of in the overall form of the two subspecies, F. -
New Data on the Jaw Apparatus of Fossil Cephalopods
New dataon the jaw apparatus of fossil cephalopods YURI D. ZAKHAROV AND TAMAZ A. LOMINADZE \ Zakharov, Yuri D. & Lominadze, Tamaz A. 19830115: New data on the jaw apparatus of fossil LETHAIA cephalopods. Lethaia, Vol. 16, pp. 67-78. Oslo. ISSN 0024-1164. A newly discovered fossil cephalopod jaw apparatus that may belong to Permian representatives of the Endocochlia is described. Permorhynchus dentatus n. gen. n. sp. is established on the basis of this ~ apparatus. The asymmetry of jaws in the Ectocochlia may be connected with the double function of the ventral jaw apparatus, and the well-developed, relatively large frontal plate of the ventral jaw should be regarded as a feature common to all representatives of ectocochlian cephalopods evolved from early Palaeozoic stock. Distinct features seen in the jaw apparatus of Upper Pcrmian cndocochlians include the pronounced beak form of both jaws and the presence of oblong wings on the ventral mandible. o Cephalopoda. jaw. operculum. aptychus, anaptychus, Permorhynchus n.gen.• evolution. Permian. Yuri D. Zakharov llOpllll Ilscumpueeu« Gaxapoe], Institute of Biology and Pedology, Far-Eastern Scientific Centre. USSR Academy of Science, Vladivostok 690022, USSR (EUOJl020-n9~BnlHbliiuucmu my m Ilaot.neeocmo-cnoro Ha."~H020 uenmpav Axaoeuuu 'HayK CCCP, Bnaoueocmo« 690022, CCCP); Tamaz A. Lominadze ITa.'W3 Apl.j1L10BUl.j Jlouunaoee), Institute of Palaeobiology of Georgian SSR Academy of Science. Tbilisi 380004. USSR (Hncmumvm naJle06UOJl02UU Atcaoeuuu naytc TpY3UHUjKOii CCP. T6'LJUCU 380004. CCP; 19th August. 1980 (revised 1982 06 28). The jaw apparatus of Recent cephalopods is re Turek 1978, Fig. 7, but not the reconstruction in presented by two jaw elements (Fig. -
Silurian Rugose Corals of the Central and Southwest Great Basin
Silurian Rugose Corals of the Central and Southwest Great Basin GEOLOGICAL SURVEY PROFESSIONAL PAPER 777 Silurian Rugose Corals of the Central and Southwest Great Basin By CHARLES W. MERRIAM GEOLOGICAL SURVEY PROFESSIONAL PAPER 777 A stratigraphic-paleontologic investigation of rugose corals as aids in age detern2ination and correlation of Silurian rocks of the Great Basin with those of other regions UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1973 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 73-600082 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402- Price $2.15 (paper cover) Stock Number 2401-00363 CONTENTS Page Page Abstract--------------------------------------------------------------------------- 1 Systematic and descriptive palaeontology-Continued Introduction -------------------------------------------------------------------- 1 Family Streptelasmatidae-Continued Purpose and scope of investigation------------------------------- 1 Dalmanophyllum ------------------------------------------------- 32 History of investigation ---------------------------------------------- 1 Family Stauriidae ------------------------------------------------------- 32 Methods of study------------------------------------------------------- 2 Cyathoph y llo ides-------------------------------------------------- 32 Acknowledgments------------------------------------------------------- 4 Palaeophyllum -
United States
DEPARTMENT OF THE INTERIOR BULLETIN OF THE UNITED STATES ISTo. 146 WASHINGTON GOVERNMENT Pit IN TING OFFICE 189C UNITED STATES GEOLOGICAL SURVEY CHAKLES D. WALCOTT, DI11ECTOK BIBLIOGRAPHY AND INDEX NORTH AMEEICAN GEOLOGY, PALEONTOLOGY, PETEOLOGT, AND MINERALOGY THE YEA.R 1895 FEED BOUGHTON WEEKS WASHINGTON Cr O V E U N M K N T P K 1 N T I N G OFFICE 1890 CONTENTS. Page. Letter of trail smittal...... ....................... .......................... 7 Introduction.............'................................................... 9 List of publications examined............................................... 11 Classified key to tlio index .......................................... ........ 15 Bibliography ............................................................... 21 Index....................................................................... 89 LETTER OF TRANSMITTAL DEPARTMENT OF THE INTEEIOE, UNITED STATES GEOLOGICAL SURVEY, DIVISION OF GEOLOGY, Washington, D. 0., June 23, 1896. SIR: I have the honor to transmit herewith the manuscript of a Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy for the year 1895, and to request that it be published as a bulletin of the Survey. Very respectfully, F. B. WEEKS. Hon. CHARLES D. WALCOTT, Director United States Geological Survey. 1 BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINER ALOGY FOR THE YEAR 1895. By FRED BOUGHTON WEEKS. INTRODUCTION. The present work comprises a record of publications on North Ameri can geology, paleontology, petrology, and mineralogy for the year 1895. It is planned on the same lines as the previous bulletins (Nos. 130 and 135), excepting that abstracts appearing in regular periodicals have been omitted in this volume. Bibliography. The bibliography consists of full titles of separate papers, classified by authors, an abbreviated reference to the publica tion in which the paper is printed, and a brief summary of the con tents, each paper being numbered for index reference. -
XLVI. Notes on the Age of the Limestones of South Devonshire
[ 721 ] XLVI. Notes on the Age of the Limestones of South Devonshire. BY WILLIAM LONSDALE, P.G.S. [Read March 25, 1840.]* THE reasons which induced me to assume on zoological evidence, that the limestones of Southern Devon, between Dartmoor and the coast, would prove to be of the age of the old red sandstone, not having* been placed on record in a separate form, Mr. Murchison has begged me to lay before the Society a distinct notice of my claim to having been the first to propose the classifi cation recently put forth by Professor Sedgwick and himself; and in conse quence of an extension of those views to Belgium and the Boulonnais, Dr. Pitton has urged me to comply with the request. In the memoirsf in which Professor Sedgwick and Mr. Murchison announced the change in their classi fication of the older sedimentary strata of Devonshire and Cornwall, the clearest and amplest acknowledgements are made of my share in promoting the alteration; but as it is possible that some mistake may hereafter arise, re lative to the nature and limits of my suggestion, I conceive it is a duty to others as well as to myself to comply with the above request. I regret, how ever, that I cannot make this notice as satisfactory as I could wish, from the whole of the data not being accessible ; and I regret that my official duties have prevented me from bestowing upon it that time and thought and re search which ought to be evident in the shortest communications read to this Society. -
An Inventory of Trilobites from National Park Service Areas
Sullivan, R.M. and Lucas, S.G., eds., 2016, Fossil Record 5. New Mexico Museum of Natural History and Science Bulletin 74. 179 AN INVENTORY OF TRILOBITES FROM NATIONAL PARK SERVICE AREAS MEGAN R. NORR¹, VINCENT L. SANTUCCI1 and JUSTIN S. TWEET2 1National Park Service. 1201 Eye Street NW, Washington, D.C. 20005; -email: [email protected]; 2Tweet Paleo-Consulting. 9149 79th St. S. Cottage Grove. MN 55016; Abstract—Trilobites represent an extinct group of Paleozoic marine invertebrate fossils that have great scientific interest and public appeal. Trilobites exhibit wide taxonomic diversity and are contained within nine orders of the Class Trilobita. A wealth of scientific literature exists regarding trilobites, their morphology, biostratigraphy, indicators of paleoenvironments, behavior, and other research themes. An inventory of National Park Service areas reveals that fossilized remains of trilobites are documented from within at least 33 NPS units, including Death Valley National Park, Grand Canyon National Park, Yellowstone National Park, and Yukon-Charley Rivers National Preserve. More than 120 trilobite hototype specimens are known from National Park Service areas. INTRODUCTION Of the 262 National Park Service areas identified with paleontological resources, 33 of those units have documented trilobite fossils (Fig. 1). More than 120 holotype specimens of trilobites have been found within National Park Service (NPS) units. Once thriving during the Paleozoic Era (between ~520 and 250 million years ago) and becoming extinct at the end of the Permian Period, trilobites were prone to fossilization due to their hard exoskeletons and the sedimentary marine environments they inhabited. While parks such as Death Valley National Park and Yukon-Charley Rivers National Preserve have reported a great abundance of fossilized trilobites, many other national parks also contain a diverse trilobite fauna. -
Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada
Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 322 Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada By N. J. SILBERLING GEOLOGICAL SURVEY PROFESSIONAL PAPER 322 A study of upper Paleozoic and lower Mesozoic marine sedimentary and volcanic rocks, with descriptions of Upper Triassic cephalopods and pelecypods UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. CONTENTS Page Page Abstract_ ________________________________________ 1 Paleontology Continued Introduction _______________________________________ 1 Systematic descriptions-------------------------- 38 Class Cephalopoda___--_----_---_-_-_-_-_--_ 38 Location and description of the area ______________ 2 Order Ammonoidea__-__-_______________ 38 Previous work__________________________________ 2 Genus Klamathites Smith, 1927_ __ 38 Fieldwork and acknowledgments________________ 4 Genus Mojsisovicsites Gemmellaro, 1904 _ 39 Stratigraphy _______________________________________ 4 Genus Tropites Mojsisovics, 1875_____ 42 Genus Tropiceltites Mojsisovics, 1893_ 51 Cambrian (?) dolomite and quartzite units__ ______ 4 Genus Guembelites Mojsisovics, 1896__ 52 Pablo formation (Permian?)____________________ 6 Genus Discophyllites Hyatt, -
Late Silurian Trilobite Palaeobiology And
LATE SILURIAN TRILOBITE PALAEOBIOLOGY AND BIODIVERSITY by ANDREW JAMES STOREY A thesis submitted to the University of Birmingham for the degree of DOCTOR OF PHILOSOPHY School of Geography, Earth and Environmental Sciences University of Birmingham February 2012 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. ABSTRACT Trilobites from the Ludlow and Přídolí of England and Wales are described. A total of 15 families; 36 genera and 53 species are documented herein, including a new genus and seventeen new species; fourteen of which remain under open nomenclature. Most of the trilobites in the British late Silurian are restricted to the shelf, and predominantly occur in the Elton, Bringewood, Leintwardine, and Whitcliffe groups of Wales and the Welsh Borderland. The Elton to Whitcliffe groups represent a shallowing upwards sequence overall; each is characterised by a distinct lithofacies and fauna. The trilobites and brachiopods of the Coldwell Formation of the Lake District Basin are documented, and are comparable with faunas in the Swedish Colonus Shale and the Mottled Mudstones of North Wales. Ludlow trilobite associations, containing commonly co-occurring trilobite taxa, are defined for each palaeoenvironment. -
North American Geology, Paleontology, Petrology, and Mineralogy
Bulletin No. 240 Series G, Miscellaneous, 28 DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY CHARLES D. VVALCOTT, DIRECTOR BIBIIOGRAP.HY AND INDEX OF NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINERALOGY FOR THE YEAJR, 19O3 BY IFIRIEID WASHINGTON GOVERNMENT PRINTING OFFICE 1904 CONTENTS Page. Letter of transmittal...................................................... 5 Introduction.....:....................................,.................. 7 List of publications examined ............................................. 9 Bibliography............................................................. 13 Addenda to bibliographies J'or previous years............................... 139 Classi (led key to the index................................................ 141 Index .._.........;.................................................... 149 LETTER OF TRANSMITTAL DEPARTMENT OF THE INTERIOR, UNITED STATES GEOLOGICAL SURVEY, Washington, D. 0. , June 7, 1904.. SIR: I have the honor to transmit herewith the manuscript of a bibliography and index of North American geology, paleontology, petrology, and mineralogy for the year 1903, and to request that it be published as a bulletin of the Survey. Very respectfully, F. B. WEEKS, Libraria/ii. Hon. CHARLES D. WALCOTT, Director United States Geological Survey. BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN GEOLOGY,- PALEONTOLOGY, PETROLOGY, AND MINERALOGY FOR THE YEAR 1903. By FRED BOUGHTON WEEKS. INTRODUCTION, The arrangement of the material of the Bibliography and Index f Or 1903 is similar -
Invertebrate-Paleontology-By-Clarkson.Pdf
Invertebrate Palaeontology and Evolution E.N.K. Clarkson Professor of Palaeontology Department of Geology University of Edinburgh Scotland Fourth edition b Blackwell Science Invertebrate Palaeontology and Evolution Invertebrate Palaeontology and Evolution E.N.K. Clarkson Professor of Palaeontology Department of Geology University of Edinburgh Scotland Fourth edition b Blackwell Science © 1979,1986,1993,1998 by E. N. K. Clarkson Published by Blackwell Science Ltd, a Blackwell Publishing company BLACKWELL PUBLlSHING 350 Mam Street, Malden, MA 02148-5020, USA %00 Garsington Road, Oxford OX4 2DQ, UK 550 Swanston Street, Carlton, Victoria 3053, Australia The right of E. :'\I. K. Clarkson to be identified as the Author of this Work has been asserted in accordance with the UK Copyright, Designs and Patents Act 1988. All rights reserved. No pad of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, ml'Chanical, photocopying, recording or otherwise, except as permitted by the UK Copyright, Designs and Patents Act 1988, WIthout the prior permission of the publisher. First published 1979 by Unwin Hyman Ltd Second edition 1986 Third edition 1993 by Chapman & Hall Fourth edition 1998 by Blackwell Science Ltd 10 2008 Library (If Congress Catalogins-in-Puhlicatioll Unta has bccn applied/or ISBN 978-0-632-05238-7 A catalogue record for this title is available from the British Library. Set by Wyvern 21 Ltd, Bristol Printed and bound in Singapore by C.Os. Printers Pte Ltd The publisher's policy is to use permanent paper from mills that operate a sustainable forestry policy, and which has been manufactured from pulp processed using acid-free and elementary chlorine-free practices. -
Discovery of Neophyllites (Ammonitina, Cephalopoda, Early
Discovery of Neophyllites (Ammonitina, Cephalopoda, Early Hettangian) in the New York Canyon sections (Gabbs Valley Range, Nevada) and disscussion of the 13C negative anomalies located around the Triassic-Jurassi boundary Autor(en): Guex, Jean / Bartolini, Annachiara / Taylor, David Objekttyp: Article Zeitschrift: Bulletin de la Société Vaudoise des Sciences Naturelles Band (Jahr): 88 (2002-2003) Heft 2 PDF erstellt am: 07.10.2021 Persistenter Link: http://doi.org/10.5169/seals-281427 Nutzungsbedingungen Die ETH-Bibliothek ist Anbieterin der digitalisierten Zeitschriften. Sie besitzt keine Urheberrechte an den Inhalten der Zeitschriften. Die Rechte liegen in der Regel bei den Herausgebern. Die auf der Plattform e-periodica veröffentlichten Dokumente stehen für nicht-kommerzielle Zwecke in Lehre und Forschung sowie für die private Nutzung frei zur Verfügung. Einzelne Dateien oder Ausdrucke aus diesem Angebot können zusammen mit diesen Nutzungsbedingungen und den korrekten Herkunftsbezeichnungen weitergegeben werden. Das Veröffentlichen von Bildern in Print- und Online-Publikationen ist nur mit vorheriger Genehmigung der Rechteinhaber erlaubt. Die systematische Speicherung von Teilen des elektronischen Angebots auf anderen Servern bedarf ebenfalls des schriftlichen Einverständnisses der Rechteinhaber. Haftungsausschluss Alle Angaben erfolgen ohne Gewähr für Vollständigkeit oder Richtigkeit. Es wird keine Haftung übernommen für Schäden durch die Verwendung von Informationen aus diesem Online-Angebot oder durch das Fehlen von Informationen. -
Iii Silurian Fauna
III SILURIAN FAUNA By AUGUST F. FOERSTE THE SILURIAN FAUNA OF KENTUCKY By AUGUST F. FOERSTE THE SOURCE AND AFFINITIES OF THE SILURIAN FAUNAS In prehistoric times the North American continent was invaded by oceanic faunas from various directions. The tilting of the continent toward the south permitted the invasion of oceanic faunas from the Gulf of Mexico, and tilting toward the east, permitted invasions from the North Atlantic. There have been invasions also from the Arctic and Pacific. Some of these invasions extended far inland. Some from the Gulf of Mexico spread northward along the Mississippi embayment as far as the southern part of Canada, and some from the North Atlantic reached Ohio and Kentucky. As far as known, none of the invasions from the Arctic or Pacific reached Kentucky. In most Silurian faunas, the brachiopod element predominates. Three of the southern invasions—the Brassfield, Osgood, and Waldron—are characterized by the abundance of bryozoans, in addition to the brachiopods. The Brassfield and Waldron contain also a considerable number of gastropods, pelecypods, cephalopods, and trilobites, all of which are relatively scarce in the Osgood and Louisville. In the Osgood, on the contrary, there are numerous cystids, though almost all of these were described originally under the single generic name Holocystites. The Waldron is characterized by the considerable variety of crinoids. In the Laurel and Louisville bryozoans are rare. The Laurel is now characterized by numerous species of crinoids, a considerable number of which show affinities with crinoids occurring in Gotland and England. Possibly these invaded the American continent from some North Atlantic source.