Redescription of Upper Devonian Conodont Genera and Species Proposed by Ulrich and Bassler in 1926
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The Unique Devonian of Immouzer-Du-Kandar (Middle Atlas Basement) – Biostratigraphy, Faunas, and Facies Development
Aboussalam & al. Devonian of Immouzer-du-Kandar The unique Devonian of Immouzer-du-Kandar (Middle Atlas basement) – biostratigraphy, faunas, and facies development ZHOR SARAH ABOUSSALAM, RALPH THOMAS BECKER, JULIA RICHTER, SVEN HARTENFELS, AHMED EL HASSANI & STEPHAN EICHHOLT Fig. 1: View (from the hill at Douar Ahmed-ben-Mellouk) on Devonian exposures of Immouzer-du-Kandar (hill rising from Chabat el Jenanet, Sections C2 and C3 of CYGAN et al. 1990), our Section C4, with outcrop of the lower Emsian conglomerate (Chabat Jenanet Formation) along and above the track, faulted upper Emsian to lower Givetian limestones in the lower slope (new Ahmed-ben-Mellouk Formation), the reef breccia forming a small terrace ca. 2/3 upwards, and the Famennian upper slope (new Chabat el Hallouf Formation, Section C5) towards the top. The slope to the left (NNE) is occupied by Triassic red beds. Section numbers are marked in circles. 1. Introduction Mesozoic Middle Atlas, with the best and most important outcrops in the tectonic window The Middle Atlas divides the Moroccan (“boutonnière”) at Immouzer-du-Kandar, ca. Meseta into the Western and Eastern Meseta, 40 km S of Fès. The wooded Jebel Kandar to which differ strongly in the Devonian in terms the SW is a more than 1600 m high mountain of facies and synsedimentary structural built of Jurassic strata (Fig. 2). Fossiliferous geology (e.g., overviews of EL HASSANI & Ordovician to Lower Carboniferous BENFRIKA 1995, 2000). There is restricted formations crop out to the NW, from Dour knowledge of the Palaeozoic basement of the Rouda towards the SE, the Chabat el Jenanet, Hassan II Academy of Science and Technology Frontiers in Science and Engineering - Vol. -
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Acta Geologica Polonica, Vol. 50 (2000), No. 1, pp. 67-97 Revision of ammonoid biostratigraphy in the Frasnian (Upper Devonian) of the Southern Timan (Northeast Russian Platform) R. THOMAS BECKER1, MICHAEL R. HOUSE2, VLADIMIR V. MENNER3 & N. S. OVNATANOVA4 1 Museum für Naturkunde der Humboldt-Universität zu Berlin, Invalidenstr. 43, D-10115 Berlin, Germany. E-mail: [email protected] 2 School of Ocean and Earth Science, Southampton Oceanography Centre, European Way, Southampton, SO 14 3ZH, U.K. 3 Institute of Geology and Exploitation of Combustible Fuel, Fersman 50, Moscow 117312, Russian Federation 4 All-Russia Research Geological Oil Prospecting Institute, Shosse Entuziastov 36, Moscow 105819, Russian Federation ABSTRACT: BECKER, R.T., HOUSE, M.R., MENNER, V.V. & OVNATANOVA, N.S. (2000). Revision of ammonoid biostratig- raphy in the Frasnian (Upper Devonian) of the Southern Timan (Northeast Russian Platform). Acta Geologica Polonica, 50 (1), 67-97, Warszawa. New field work in outcrops of the Ukhta Region (Southern Timan) together with the re-exanimation of former collections allows a detailed revision of the ammonoid zonation in one of the classical Frasnian regions of Russia. There is a total of 47 species, 18 of which are new or recorded for the first time from the region. The latter applies to representatives of Linguatornoceras, Phoenixites, Aulatornoceras s.str. and Acantho- clymenia. New taxa are Chutoceras manticoides n.gen. n.sp. and Linguatornoceras yudinae n.sp. In the Ust’yarega Formation regional Hoeninghausia nalivkini, Timanites keyserlingi and Komioceras stuckenber- gi Zones can be recognized which correlate with the international Frasnian divisions UD I-B/C. -
Conodonts in Ordovician Biostratigraphy
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Archivio istituzionale della ricerca - Università di Modena e Reggio Emilia 1 Conodonts in Ordovician biostratigraphy STIG M. BERGSTRÖM AND ANNALISA FERRETTI Conodonts in Ordovician biostratigraphy The long time interval after Pander’s (1856) original conodont study can in terms of Ordovician conodont biostratigraphic research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971), and the Modern Period (1971-Recent). During the pre-1920s, the few published conodont investigations were restricted to Europe and North America and were not concerned about the potential use of conodonts as guide fossils. Although primarily of taxonomic nature, the pioneer studies by Branson & Mehl, Stauffer, and Furnish during the 1930s represent the beginning of the use of conodonts in Ordovician biostratigraphy. However, no formal zones were introduced until Lindström (1955) proposed four conodont zones in the Lower Ordovician of Sweden, which marks the end of the Pioneer Period. Because Lindström’s zone classification was not followed by similar work outside Baltoscandia, the time interval up to the late 1960s can be regarded as a Transition Period. A milestone symposium volume, entitled ‘Conodont Biostratigraphy’ and published in 1971, 2 summarized much new information on Ordovician conodont biostratigraphy and is taken as the beginning of the Modern Period of Ordovician conodont biostratigraphy. In this volume, the Baltoscandic Ordovician was subdivided into named conodont zones whereas the North American Ordovician succession was classified into a series of lettered or numbered Faunas. Although most of the latter did not receive zone names until 1984, this classification has been used widely in North America. -
An Examination of the Devonian Bedrock and Overlying Pleistocene Sediments at Messerly & Morgan Quarries, Blackhawk County, Iowa
FromFFrroomm OceanOOcceeaann tottoo Ice:IIccee:: AnAAnn examinationeexxaammiinnaattiioonn ofooff thetthhee DevonianDDeevvoonniiaann bedrockbbeeddrroocckk andaanndd overlyingoovveerrllyyiinngg PleistocenePPlleeiissttoocceennee sedimentssseeddiimmeennttss ataatt MesserlyMMeesssseerrllyy &&& MorganMMoorrggaann Quarries,QQuuaarrrriieess,, BlackBBllaacckk HawkHHaawwkk County,CCoouunnttyy,, IowaIIoowwaa Geological Society of Iowa ______________________________________ April 24, 2004 Guidebook 75 Cover photograph : University of Northern Iowa Professor and field trip leader Dr. Jim Walters points to a stromatoporoid-rich bed in the Osage Springs Member of the Lithograph City Formation at the Messerly Quarry, the first stop of this field trip From Ocean to Ice: An examination of the Devonian bedrock and overlying Pleistocene sediments at Messerly & Morgan Quarries, Blackhawk County, Iowa prepared and led by: James C. Walters Department of Earth Science University of Northern Iowa Cedar Falls, IA 50614 John R. Groves Department of Earth Science University of Northern Iowa Cedar Falls, IA 50614 Sherman Lundy 4668 Summer St. Burlington IA 52601 with contributions by: Bill J. Bunker Iowa Geological Survey Iowa Department Natural Resources Iowa City, Iowa 52242-1319 Brian J. Witzke Iowa Geological Survey Iowa Department Natural Resources Iowa City, Iowa 52242-1319 April 24, 2004 Geological Society of Iowa Guidebook 75 i ii Geological Society of Iowa TABLE OF CONTENTS From Ocean to Ice: An examination of the Devonian bedrock and overlying Pleistocene -
Early Silurian Oceanic Episodes and Events
Journal of the Geological Society, London, Vol. 150, 1993, pp. 501-513, 3 figs. Printed in Northern Ireland Early Silurian oceanic episodes and events R. J. ALDRIDGE l, L. JEPPSSON 2 & K. J. DORNING 3 1Department of Geology, The University, Leicester LE1 7RH, UK 2Department of Historical Geology and Palaeontology, SiSlvegatan 13, S-223 62 Lund, Sweden 3pallab Research, 58 Robertson Road, Sheffield $6 5DX, UK Abstract: Biotic cycles in the early Silurian correlate broadly with postulated sea-level changes, but are better explained by a model that involves episodic changes in oceanic state. Primo episodes were characterized by cool high-latitude climates, cold oceanic bottom waters, and high nutrient supply which supported abundant and diverse planktonic communities. Secundo episodes were characterized by warmer high-latitude climates, salinity-dense oceanic bottom waters, low diversity planktonic communities, and carbonate formation in shallow waters. Extinction events occurred between primo and secundo episodes, with stepwise extinctions of taxa reflecting fluctuating conditions during the transition period. The pattern of turnover shown by conodont faunas, together with sedimentological information and data from other fossil groups, permit the identification of two cycles in the Llandovery to earliest Weniock interval. The episodes and events within these cycles are named: the Spirodden Secundo episode, the Jong Primo episode, the Sandvika event, the Malm#ykalven Secundo episode, the Snipklint Primo episode, and the lreviken event. Oceanic and climatic cyclicity is being increasingly semblages (Johnson et al. 1991b, p. 145). Using this recognized in the geological record, and linked to major and approach, they were able to detect four cycles within the minor sedimentological and biotic fluctuations. -
Calcium Stable Isotopes Place Devonian Conodonts As First Level Consumers V
Calcium stable isotopes place Devonian conodonts as first level consumers V. Balter, J.E. Martin, T. Tacail, G. Suan, Sabrina Renaud, Catherine Girard To cite this version: V. Balter, J.E. Martin, T. Tacail, G. Suan, Sabrina Renaud, et al.. Calcium stable isotopes place Devonian conodonts as first level consumers. Geochemical Perspectives Letters, European Assoication of Geochemistry, 2019, 10, pp.36-39. 10.7185/geochemlet.1912. hal-02112869 HAL Id: hal-02112869 https://hal.archives-ouvertes.fr/hal-02112869 Submitted on 27 Apr 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. © 2019 The Authors Published by the European Association of Geochemistry Calcium stable isotopes place Devonian conodonts as first level consumers V. Balter1*, J.E. Martin1, T. Tacail2, G. Suan1, S. Renaud3, C. Girard4 Abstract doi: 10.7185/geochemlet.1912 Conodont animals are an extinct group of jawless vertebrates whose hard parts, also known as conodont elements, represent the earliest evidence of a mineralised skeleton in the vertebrate lineage. Conodont elements are interpreted as parts of a feeding apparatus, which together with the presence of eyes and microwear patterns, support the controversial hypothesis that conodont animals were macrophagous predators and/or scavengers. -
CONODONTS of the MOJCZA LIMESTONE -.: Palaeontologia Polonica
CONODONTS OF THE MOJCZA LIMESTONE JERZY DZIK Dzik, J. 1994. Conodonts of the M6jcza Limestone. -In: J. Dzik, E. Olemp ska, and A. Pisera 1994. Ordovician carbonate platform ecosystem of the Holy Cross Moun tains. Palaeontologia Polonica 53, 43-128. The Ordovician organodetrital limestones and marls studied in outcrops at M6jcza and Miedzygorz, Holy Cross Mts, Poland, contains a record of the evolution of local conodont faunas from the latest Arenig (Early Kundan, Lenodus variabilis Zone) to the Ashgill (Amorphognathus ordovicicus Zone), with a single larger hiatus corre sponding to the subzones from Eop/acognathus pseudop/anu s to E. reclinatu s. The conodont fauna is Baltic in general appearance but cold water genera , like Sagitto dontina, Scabbardella, and Hamarodus, as well as those of Welsh or Chinese af finities, like Comp/exodus, Phragmodus, and Rhodesognathu s are dominant in par ticular parts of the section while others common in the Baltic region, like Periodon , Eop/acognathus, and Sca/pellodus are extremely rare. Most of the lineages continue to occur throughout most of the section enabling quantitative studies on their phyletic evolut ion. Apparatuses of sixty seven species of thirty six genera are described and illustrated. Phyletic evolution of Ba/toniodus, Amorphognathu s, Comp/exodus, and Pygodus is biometrically documented. Element s of apparatu ses are homolog ized and the standard notation system is applied to all of them. Acodontidae fam. n., Drepa nodus kie/censis sp. n., and D. santacrucensis sp. n. are proposed . Ke y w o r d s: conodonts, Ordovici an, evolut ion, taxonomy. Jerzy Dzik, Instytut Paleobiologii PAN, A/eja Zwirk i i Wigury 93, 02-089 Warszawa , Poland. -
UPPER DEVONIAN CONODONTS ASSOCIATED with a LARGE PLACODERM FISH SKULL from the CANNING BASIN, WESTERN... Download
Rec. West. Aust. Mus. 1987,13 (4): 501-513 Upper Devonian conodonts associated with a large placoderm fish skull from the Canning Basin, Western Australia John A. Long* Abstract Conodonts retrieved from limestone encasing the skull of a large placoderm fish, from an unknown lo'cation in the south-eastern Canning Basin, indicate an age of mid-Famennian (toIIB) because of the concurrent presence of the following taxa: Nothognathella palmatiformis, Nothognathella sp. nov, A. Druce 1976,Palmatolepis glabra pectinata, P. quadrantinodosa inflexa, P. quadrantinodosa inflexoidea, P. marginifera s.s., Polygnathus triphyllatus, P. glaber s.s. and P. germanus s.s. The assemblage represents a palmatolepid-polygnathid biofacies dominated by palmatolepids, and is typical of muddy outer shelf to sandy inner shelf environ ments. The occurrence of certain taxa which have only been previously recorded in the Canning Basin from the Virgin Hills Formation, together with the lithology of the specimen, and palaeoecological information afforded by the conodonts, suggests that the specimen was derived from the uppermost section of the Virgin Hills Formation. Introduction A large dinichthyid placoderm fish skull has recently been described as a new genus, Westralichthys Long (1987) even though the exact location and lithological source of the specimen is unknown. A limited conodont fauna of 76 elements was recovered from dilute acetic acid preparation of the dinichthyid skull. The fauna contains a number of age diagnostic species which have been used to narrow the possible age and stratigraphic source of the specimen. It is significant that the conodonts indicate a much younger age for the skull than the well known lower Frasnian Gogo fish fauna (Gardiner and Miles 1975), also from the same region. -
Taxonomic Note Palmatolepis Spallettae, New Name for a Frasnian
Journal of Paleontology, 91(3), 2017, p. 578 Copyright © 2017, The Paleontological Society 0022-3360/15/0088-0906 doi: 10.1017/jpa.2017.21 Taxonomic Note Palmatolepis spallettae, new name for a Frasnian conodont species Gilbert Klapper,1 Thomas T. Uyeno,2 Derek K. Armstrong,3 and Peter G. Telford4 1Department of Earth and Planetary Sciences, Northwestern University, Evanston, Illinois 60208, USA 〈[email protected]〉 2Emeritus, Geological Survey of Canada, 3303-33rd St NW, Calgary, Alberta, T2L 2A7, Canada 〈[email protected]〉 3Ontario Geological Survey, 933 Ramsey Road, Sudbury, Ontario, P3E 6B5, Canada 4Departmental Associate, Department of Palaeobiology, Royal Ontario Museum, 100 Queen’s Park, Toronto, Ontario, M5S 2C6, Canada R. Thomas Becker and Sven Hartenfels of the Westfälische (Klapper et al., 2004, p. 375); this is the preferred zonal Wilhelms-Universität, Münster, Germany, have kindly terminology used in that paper, as well as was formalized by informed us that the name Palmatolepis nodosa (Klapper et al., Klapper and Kirchgasser (2016). 2004, p. 381) based on a Frasnian conodont species from northern Ontario is preoccupied. An earlier name, Palmatolepis References marginifera nodosus, was established by Xiong (1983, p. 313) based on a Famennian conodont subspecies from southwest Klapper, G., and Kirchgasser, W.T., 2016, Frasnian Late Devonian conodont China. Species and subspecies within the same genus are biostratigraphy in New York: graphic correlation and taxonomy: Journal of coordinate for the purposes of homonymy. Nor does it prevent Paleontology, v. 90, p. 525–554. Klapper, G., Uyeno, T.T., Armstrong, D.K., and Telford, P.G., 2004, Conodonts homonymy that Xiong used a masculine ending for his of the Williams Island and Long Rapids formations (Upper Devonian, subspecies, as it is automatically corrected to a feminine ending Frasnian–Famennian) of the Onakawana B Drillhole, Moose River Basin, to agree with the gender of the genus name. -
Conodont Biostratigraphy and Paleoecology of The
CONODONT BIOSTRATIGRAPHY AND PALEOECOLOGY OF THE LOWER DEVONIAN HELDERBERG GROUP OF VIRGINIA by Elizabeth G. Cook Thesis submitted to the Graduate Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Geological Sciences APPROVED: Dr. C. G. Tillman, Chairman -------------~-""'\-----7----- --------------------~-~------- Dr. W. D.)Lowry Dr. J. F. Read May, 1981 Blacksburg, Virginia ACKNOWLEDGEMENTS I thank Dr. Tillman for proposing the problem and for continued help and encouragement during the research and writing of the thesis. Dr. J. F. Read and W. D. Lowry offered constructive criticism of the ' ' manuscript. Thanks are also due to William Seaton for assistance with some of the sampling and to Gordon Love for assistance with the photography. I also acknowledge financial support from the Department of Geological Sciences at Virginia Polytechnic Institute and State University. E. G. C. ii TABLE OF CONTENTS Page ACKNOWLEDGEMENTS ii LIST OF FIGURES vi LIST OF TABLES vii INTRODUCTION • 1 LOCATION OF SECTIONS 3 METHODS 5 STRUCTURAL SETTING • 7 STRATIGRAPHY • 8 Introduction • 8 Previous Work 8 Description of Formations in the Study Area 10 Keyser Formation • • 10 New Creek Limestone 12 Healing Springs Sandstone 12 Corriganville Limestone 13 Licking Creek Formation 13 Regional Correlation 14 DEPOSITIONAL ENVIRONMENTS 17 Introduction • • 17 Keyser Formation 17 Laminated limestone lithofacies 17 Nodular limestone lithofacies 20 Cross-stratified sand lithofacies 22 iii Page Shale lithofacies 23 Deeper water facies 23 Swmnary of Keyser facies in the study area • 24 New Creek Limestone 24 Healing Springs Sandstone 25 Corriganville Limestone 26 Licking Creek Formation 26 Cherry Run Member 26 Little Cove Member . -
Conodont Stratigraphy of a Highly Tectonised Silurian-Devonian Section in the San Basilio Area (SE Sardinia, Italy)
Bollettino della Societa Paleontologica Italiana 40 (3), 2001 ISSN 0375-7633 Modena, Dicembre 2001 Conodont stratigraphy of a highly tectonised Silurian-Devonian section in the San Basilio area (SE Sardinia, Italy) Carlo CORRADINI F rancesco LEONE Alfredo Loi Enrico SERPAGLI Dipartimento del Museo di Paleobiologia Dipartimento di Scienze della Terra Dipartimento del Museo di Paleobiologia e dell'Orto Botanico Universita di Cagliari e dell'Orto Botanico Universidt di Modena e Reggio Emilia Universita di Modena e Reggio Emilia KEYWORDS- Conodonts, Biostratigraphy, Tectonics, Silurian, Devonian, SE Sardinia. ABSTRACT- Several conodont species belonging to five "late Silurian biozones (Ancoradella ploeckensis, Polygnathoides siluricus, Ozarkodina crispa, Ozarkodina remscheidensis, Oulodus elegans detortus) and four Early and Late Devonian biozones (delta, pesavis, kitabicus-excavatus and Late rhenana) allow a better interpretation of stratigraphy and tectonics of the San Basilio area in western Gerrei. Frasnian sediments are documented for the first time in SE Sardinia. RIASSUNTO- [Stratigrafia a conodonti di una sezione forremente tettonizzata di eta Siluriano-Devoniano nell'area di San Basilio (Sardegna SE)] - Grazie alla biostratigrafia a conodonti viene interpretata la complessa tettonica di una sezione nell'area di San Basilio (Sardegna sud-orientale) e viene ricostruita la successione originaria. Sono documentate cinque biozone a conodonti del Siluriano superiore (Ancoradella eioeckensis, Polygnathoides siluricus, Ozarkodina crispa, -
1 Xerox University Microfilmst Ann Arbor, Michigan 48106
I 76-9946 ti I CARNES, John Beynon, 1943- CONODONT BIOSTRATIGRAPHY IN THE LOWER I MIDDLE ORDOVICIAN OF THE WESTERN I APPALACHIAN THRUST-BELTS IN NORTHEASTERN TENNESSEE. The Ohio State University, Ph.D., I 1975 I Geology 1 Xerox University Microfilmst Ann Arbor, Michigan 48106 THIS DISSERTATION HAS BEEN MICROFILMED EXACTLY AS RECEIVED. CONODONT BIOSTRATIGRAPHY IN THE LOWER MIDDLE ORDOVICIAN OF THE WESTERN APPALACHIAN THRUST-BELTS IN NORTHEASTERN TENNESSEE DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By John B. Carnes, B.A., B.S The Ohio State University 1975 Reading Committee: Approved by Professor S. M. Bergstr8m, Chairman Professor W. C. Sweet Professor Gunter Faure 7 Q / Adviser irtment or and Mineralogy ACKNOWLEDGMENTS Dr. Stig Mo Bergstrom suggested and supervised this project. Dr. Bergstrflm has been an enthusiastic adviser and a stimulating educator; his interest, his guidance, and the tremendous amount of time he devoted to this project are greatly appreciated. Dr. Walter C. Sweet read the manuscript and offered many helpful suggestions. Dr. Sweet has spent many hours, to the writer's profit, discussing conodont biostratigraphy and taxonomy and sharing his insights. Thanks are also due to Dr. Gunter Faure, who read the manuscript; to Dr. Aurele LaRocque who kindly allowed the writer to use his office space, his drafting equipment, and his personal library; and to Dr. Barry J. Cooper and Dr. Robert B. Votaw, who, while graduate students at The Ohio State University, freely discussed their ideas with the writer. I am deeply indebted to several good friends who provided valuable assistance in the final assembly of this report.