DOCSLIB.ORG

Wittmann Sonja.Pdf (10.90Mb)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Wittmann Sonja.Pdf (10.90Mb) Sonja Wittmann Wechselwirkungen zwischen karbonatischer und vulkaniklastischer Sedimentation auf dem jurassischen Vulkanbogen in der chilenisch/peruanischen Küstenkordillere (Südamerika) Wechselwirkungen zwischen karbonatischer und vulkaniklastischer Sedimentation auf dem jurassischen Vulkanbogen in der chilenisch/peruanischen Küstenkordillere (Südamerika) vorgelegt von Dipl.-Geol. Sonja Wittmann Vom Fachbereich 9 - Bauingenieurwesen und Angewandte Geowissenschaften - der Technischen Universität Berlin zur Erlangung des akademischen Grades Doktor der Naturwissenschaften - Dr. rer. nat. - genehmigte Dissertation Promotionsausschuß: Vorsitzender: Prof. Dr. rer. nat. Gerhard Franz Berichter: Prof. Johannes H. Schroeder, Ph.D Berichter: Prof. Dr. rer. nat. Axel von Hillebrandt Berichter: Prof. Dr. rer. nat. Klaus Reutter Tag der wissenschaftlichen Aussprache: 22.05.2001 Institut für Angewandte Geowissenschaften II Technische Universität Berlin 2001 D 83 INHALTSVERZEICHNIS 1 ________________________________________________________________________________________________________________________________________________________________ ANLAGENVERZEICHNIS 4 ABBILDUNGSVERZEICHNIS 5 TAFELVERZEICHNIS 6 TABELLENVERZEICHNIS 6 KURZFASSUNG 7 ABTRACT 7 RESUMEN 8 1. EINLEITUNG ...............................................................................................................................................................9 1.1 AUFGABENSTELLUNG ............................................................................................................................................9 1.2 BESCHREIBUNG DES ARBEITSGEBIETES ...........................................................................................................9 1.2.1 Geographische Lage...................................................................................................................................................9 1.2.2 Geomorphologie, Hydrologie und Vegetation .........................................................................................................11 2. GEOLOGISCHER RAHMEN......................................................................................................................................12 2.1 DER JURA VON NORDCHILE UND SÜDPERU ...................................................................................................12 2.2 STAND DER FORSCHUNG .....................................................................................................................................15 3. ARBEITSMETHODIK.................................................................................................................................................17 3.1 GELÄNDEARBEIT ...................................................................................................................................................17 3.2 KARTENGRUNDLAGEN UND LUFTBILDER......................................................................................................17 3.3 PROFILDARSTELLUNG..........................................................................................................................................18 3.4 BEARBEITUNG DER FOSSILIEN...........................................................................................................................18 3.5 DÜNNSCHLIFFE.......................................................................................................................................................18 3.6 SCHLÄMMPROBENAUFBEREITUNG FÜR MIKROPALÄONTOLOGISCHE UNTER-SUCHUNGEN ..........19 3.7 MIKROSKOPIE .........................................................................................................................................................19 3.8 MIKROFAZIESANALYSE .......................................................................................................................................19 4. LAGE UND BESCHREIBUNG DER PROFILE.........................................................................................................21 2 INHALTSVERZEICHNIS ________________________________________________________________________________________________________________________________________________________________ 4.1 REGION ZAPIGA......................................................................................................................................................22 4.2 REGION QUEBRADA TILIVICHE..........................................................................................................................23 4.3 REGION PAMPA TANA...........................................................................................................................................24 4.4 REGION QUEBRADA CHIZA .................................................................................................................................26 4.5 REGION CALETA CAMARONES...........................................................................................................................28 4.6 REGION PAMPA CAMARONES UND CALETA VITOR......................................................................................29 4.7 REGION LOS TARROS ............................................................................................................................................30 4.8 REGION KÜSTENKORDILLERE VON ARICA.....................................................................................................31 4.9 REGION LA YARADA UND ILO (PERU) ..............................................................................................................32 5. MAKROFAUNA ..........................................................................................................................................................34 5.1 TEIL I: AMMONOIDEA............................................................................................................................................34 5.2 TEIL II: FAUNENLISTEN ........................................................................................................................................59 5.2.1 Region Zapiga ..........................................................................................................................................................59 5.2.2 Region Quebrada Tiliviche ......................................................................................................................................60 5.2.3 Region Pampa Tana .................................................................................................................................................60 5.2.4 Region Cerro Atajaña und Quebrada Chiza .............................................................................................................61 5.2.5 Region Caleta Camarones und Pampa Camarones...................................................................................................62 5.2.6 Region Quebrada Los Tarros ...................................................................................................................................62 5.2.7 Region Küstenkordillere von Arica..........................................................................................................................63 5.2.8 Region La Yarada (Peru) .........................................................................................................................................64 6. BIOSTRATIGRAPHIE.................................................................................................................................................64 6.1 BAJOCIUM ................................................................................................................................................................66 6.2 BATHONIUM ............................................................................................................................................................69 6.3 CALLOVIUM.............................................................................................................................................................71 6.4 OXFORDIUM ............................................................................................................................................................72 INHALTSVERZEICHNIS 3 ________________________________________________________________________________________________________________________________________________________________ 6.5 KREIDE......................................................................................................................................................................75 7. MIKROFAZIES............................................................................................................................................................76 7.1 BIOGENE KOMPONENTEN....................................................................................................................................76 7.1.1 Spiculae....................................................................................................................................................................75 7.1.2 Radiolarien...............................................................................................................................................................80 7.1.3 Foraminiferen...........................................................................................................................................................86 7.1.4 Bryozoen ..................................................................................................................................................................88
Load more

Recommended publications
  • Danise Et Al 2020 Gondwana Research.Docx.Pdf
    University of Plymouth PEARL https://pearl.plymouth.ac.uk Faculty of Science and Engineering School of Geography, Earth and Environmental Sciences 2020-06 Isotopic evidence for partial geochemical decoupling between a Jurassic epicontinental sea and the open ocean Danise, S http://hdl.handle.net/10026.1/15995 10.1016/j.gr.2019.12.011 Gondwana Research Elsevier BV All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. Please cite as: Danise, S., Price, G.D., Alberti, M., Holland S.M. 2020 Isotopic evidence for partial geochemical decoupling between a Jurassic epicontinental sea and the open ocean. Gondwana Research, 82, 97–107. Isotopic evidence for partial geochemical decoupling between a Jurassic epicontinental sea and the open ocean Silvia Danise a,b,⁎, Gregory D. Price a, Matthias Alberti c, Steven M. Holland d a School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, UK b Dipartimento di Sicenze della Terra, Università degli Studi di Firenze, via La Pira 4, 50121 Firenze, Italy c Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Ludewig-Meyn-Straße 10, 24118 Kiel, Germany d Department of Geology, University of Georgia, Athens, GA 30602-2501, USA a b s t r a c t Article history: Received 21 October 2019 Received in revised form 20 December 2019 Accepted 20 December 2019 Available online 30 January 2020 Handling Editor: A.
    [Show full text]
  • Sequence Stratigraphic Expression of Flexural Subsidence: Middle
    SEQUENCE STRATIGRAPHIC EXPRESSION OF FLEXURAL SUBSIDENCE: MIDDLE JURASSIC TWIN CREEK LIMESTONE, WYOMING, U.S.A. by BOLTON HOWES (Under the Direction of Steve Holland) ABSTRACT In southwestern Wyoming, the Bajocian to Callovian Twin Creek Limestone records the incipient deposition on a foreland basin in the Sundance Seaway. The sequence stratigraphy of the Twin Creek Limestone is described in the Wyoming Range of southwestern Wyoming, and the geometry of the foreland basin is described mathematically based on estimates flexural rigidity of the underlying crust and the subsidence caused by a thrust load in central Idaho. Four depositional sequences are described. These sequences are correlated to the Bighorn Basin based on existing biostratigraphic correlations and descriptions of the sequence stratigraphic architecture of Middle Jurassic strata in the Bighorn Basin. Modeling of the flexural subsidence of the foreland basin indicates that to account for the geometry of the foreland basin some form of long-wavelength subsidence must be superimposed on the flexural subsidence associated with the thrust load in central Idaho. INDEX WORDS: carbonate rocks; Jurassic; foreland basin; sequence stratigraphy SEQUENCE STRATIGRAPHIC EXPRESSION OF FLEXURAL SUBSIDENCE: MIDDLE JURASSIC TWIN CREEK LIMESTONE, WYOMING, U.S.A. By BOLTON HOWES B.A., Macalester College, 2015 A Thesis Submitted to the Graduate Faculty of The University of Georgia in Partial Fulfillment of the Requirements for the Degree MASTER OF SCIENCE ATHENS, GEORGIA 2017 © 2017 Bolton Howes All Rights Reserved SEQUENCE STRATIGRAPHIC EXPRESSION OF FLEXURAL SUBSIDENCE: MIDDLE JURASSIC TWIN CREEK LIMESTONE, WYOMING, U.S.A. by BOLTON HOWES Major Professor: Steven M. Holland Committee: L. Bruce Railsback David S.
    [Show full text]
  • Stuttgarter Beiträge Zur Naturkunde Serie B (Geologie Und Paläontologie)
    Stuttgarter Beiträge zur Naturkunde Serie B (Geologie und Paläontologie) Herausgeber: Staatliches Museum für Naturkunde, Rosenstein 1, D-70191 Stuttgart Stuttgarter Beitr. Naturk. Ser. B Nr. 373 74 S., 35 Abb. Stuttgart, 28. 12. 2007 Revision of the Middle Jurassic dimorphic ammonite genera Strigoceras/Cadomoceras (Strigoceratidae) and related forms GÜNTER SCHWEIGERT, VOLKER DIETZE, ROBERT BARON CHANDLER & VASILII MITTA Facies non omnibus una, nec diversa tamen. OVID, Metamorphoses Abstract We present a modern revision of the dimorphic ammonite pair Strigoceras QUENSTEDT, 1886/Cadomoceras MUNIER-CHALMAS, 1892 from the Middle Jurassic. The stratigraphically oldest hitherto known chronospecies of Strigoceras, S. praenuntium (BUCKMAN) appears in the Middle Aalenian as an extreme rarity. Records of the microconch genus Cadomoceras re- main unknown from strata older than Early Bajocian, but otherwise its stratigraphical range corresponds well with that of the macroconchs. The genus probably became extinct in the Early Bathonian (Zigzag Zone). The youngest known Strigoceras is S. callomoni n. sp. descri- bed here from the Macrescens Subzone of the Early Bathonian. Another new strigoceratid species, Granulochetoceras oppeliisculptum n. sp., is recorded by a single specimen from the early Garantiana Zone of eastern Spain, representing an interesting phyletic link between Stri- goceras QUENSTEDT, 1886 and Granulochetoceras GEYER, 1960. We include a brief review of the latter genus. By including Granulochetoceras in the Strigoceratidae the family would ex- tend to the Late Kimmeridgian of the Late Jurassic. The palaeogeographic distribution of Strigoceras/Cadomoceras is focussed on the western Tethyan Province, but some species also occur in the northern Pacific and its adjacent shelves. A benefit of this large area of distribution is that strigoceratids may be used to correlate distant locations, but this is partly hampered by the relatively wide range of variability within succeeding chronospecies and remarkably large variation in size of adult macroconchs.
    [Show full text]
  • Annual Meeting 2002
    Newsletter 51 74 Newsletter 51 75 The Palaeontological Association 46th Annual Meeting 15th–18th December 2002 University of Cambridge ABSTRACTS Newsletter 51 76 ANNUAL MEETING ANNUAL MEETING Newsletter 51 77 Holocene reef structure and growth at Mavra Litharia, southern coast of Gulf of Corinth, Oral presentations Greece: a simple reef with a complex message Steve Kershaw and Li Guo Oral presentations will take place in the Physiology Lecture Theatre and, for the parallel sessions at 11:00–1:00, in the Tilley Lecture Theatre. Each presentation will run for a New perspectives in palaeoscolecidans maximum of 15 minutes, including questions. Those presentations marked with an asterisk Oliver Lehnert and Petr Kraft (*) are being considered for the President’s Award (best oral presentation by a member of the MONDAY 11:00—Non-marine Palaeontology A (parallel) Palaeontological Association under the age of thirty). Guts and Gizzard Stones, Unusual Preservation in Scottish Middle Devonian Fishes Timetable for oral presentations R.G. Davidson and N.H. Trewin *The use of ichnofossils as a tool for high-resolution palaeoenvironmental analysis in a MONDAY 9:00 lower Old Red Sandstone sequence (late Silurian Ringerike Group, Oslo Region, Norway) Neil Davies Affinity of the earliest bilaterian embryos The harvestman fossil record Xiping Dong and Philip Donoghue Jason A. Dunlop Calamari catastrophe A New Trigonotarbid Arachnid from the Early Devonian Windyfield Chert, Rhynie, Philip Wilby, John Hudson, Roy Clements and Neville Hollingworth Aberdeenshire, Scotland Tantalizing fragments of the earliest land plants Steve R. Fayers and Nigel H. Trewin Charles H. Wellman *Molecular preservation of upper Miocene fossil leaves from the Ardeche, France: Use of Morphometrics to Identify Character States implications for kerogen formation Norman MacLeod S.
    [Show full text]
  • The Middle Oxfordian to Lowermost Kimmeridgian Ammonite
    Volumina Jurassica, 2010, Viii: 5–48 The Middle Oxfordian to lowermost Kimmeridgian ammonite succession at Mikhalenino (Kostroma District) of the Russian Platform, and its stratigraphical and palaeobiogeographical importance Ewa GŁOWNIAK1, Dmitry N. KISELEV2, Mikhail ROGOV3, Andrzej WIERZBOWSKI1, John K. WRIGHT4 Key words: ammonites, biostratigraphy, Boreal zonation, Subboreal zonation, Submediterranean zonation, correlation, Oxfordian/ Kimmeridgian boundary. Abstract. The Mikhalenino section on the Russian Platform has yielded numerous ammonites from the Middle and Upper Oxfordian and lowermost Kimmeridgian, collected bed by bed. The ammonites belong mostly to the Boreal family Cardioceratidae, but also to the Sub- boreal family Aulacostephanidae; additionally at some levels there were collected various Submediterranean ammonites (Perisphinctidae, Oppeliidae and Aspidoceratidae). The co-occurrence of ammonites representative of different faunal provinces makes possible recognition of the Boreal, Subboreal, and partly also Submediterranean standard zonations. In consequence, it is possible to make a close correlation between these zonal schemes. The Oxfordian/Kimmeridgian boundary at the Pseudocordata/Baylei zonal boundary of the Subboreal zonal scheme corresponds precisely to the Rosenkrantzi/Bauhini zonal boundary. This boundary of the stages defined well faunistically in the Flodigarry section (Isle of Skye, Scotland) and proposed as a candidate for the uniform Oxfordian/Kimmeridgian boundary, can be also recognized in the Russian sec- tion studied. The boundary can be traced in the Mikhalenino section using the same criteria as used at Staffin: the appearance of the first representatives of Pictonia [M]–Prorasenia [m] (Subboreal), and the first appearance of Amoeboceras (Plasmatites) (Boreal). This indi- cates the large correlation potential of the boundary defined in this way. The research on the Mikhalenino section has provided the new palaeontological findings described in this study.
    [Show full text]
  • Rudolf Schlegelmilch Die Ammoniten Des Süddeutschen Malms Die Ammoniten Des Süddeutschen Malms
    Rudolf Schlegelmilch Die Ammoniten des süddeutschen Malms Die Ammoniten des süddeutschen Malms Ein Bestimmungsbuch für Fossiliensammler und Geologen Von Rudolf Schlegelmilch Mit 9 Abbildungen und 501 Fotos auf 73 Bildtafeln ~ Springer Spektrum Dr.-Ing. Rudolf Schlegelmilch Hermelinstraße 36/6, D-73434 Aalen ISBN 978-3-8274-3102-8 Die Deutsche Nationalbibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet über http://dnb.d-nb.de abrufbar. Springer Spektrum 1. Aufl.: © Gustav Fischer Verlag, Stuttgart – New York 1994 unveränderter Nachdruck: © Springer-Verlag Berlin Heidelberg 2 012 Das Werk einschließlich aller seiner Teile ist urheberrecht- lich geschützt. Jede Verwertung, die nicht ausdrücklich vom Urheberrechtsgesetz zugelassen ist, bedarf der vorherigen Zustimmung des Verlags. Das gilt insbesondere für Ver - vielfältigungen, Bearbeitungen, Übersetzungen, Mikrover- filmungen und die Einspeicherung und Verarbeitung in elektronischen Systemen. Die Wiedergabe von Gebrauchsnamen, Handelsnamen, Warenbezeichnungen usw. in diesem Werk berechtigt auch ohne besondere Kennzeichnung nicht zu der Annahme, dass solche Namen im Sinne der Warenzeichen- und Marken- schutz-Gesetzgebung als frei zu betrachten wären und daher von jedermann benutzt werden dürften. Satz: Typobauer Filmsatz GmbH, Ostfildern Einbandentwurf: SpieszDesign, Neu-Ulm Gedruckt auf säurefreiem und chlorfrei gebleichtem Papier Springer Spektrum ist eine Marke von Springer DE. Springer DE ist Teil der Fachverlagsgruppe Springer Science+Business Media. www.springer-spektrum.de Inhalt 1 Einführung . 1 Glochiceratidae. .. 46 Ochetoceratinae. .. 46 2 Zum System der Malm-Ammoniten ........ 2 Campylites. .. 46 2.1 Stephanocerataceae ................... 2 Trimarginites . .. 46 2.2 Haplocerataceae ..................... 2 Ochetoceras. .. 47 2.3 Perisphinctaceae ..................... 2 Cymaceras. .. 49 Oxydiscites . .. 50 3 Zur Stratigraphie des Malms ............. 7 Glochiceratinae . .. 51 3.1 Das Oxfordium und die Dogger/Malm-Grenze .
    [Show full text]
  • Stratigraphy, Structure, and Economic Geology of the Iliamna Quadrangle, Alaska
    Stratigraphy, Structure, and Economic Geology of the Iliamna Quadrangle, Alaska By ROBERT L. DETTERMAN and BRUCE L. REED GEOLOGY OF THE ILIAMNA QUADRANGLE, ALASKA GEOLOGICAL SURVEY BULLETIN 1368-B A comprehensive study of Mesozoic to Holocene sedimentary, volcanic, and plutonic rocks of the Iliamna quadrangle UNITED STATES GOVERNMENT PRINTING OFFICE. WASHINGTON : 1980 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL SURVEY H. William Menard, Director Library of Congress Cataloging in Publication Data Detterman, Robert L. Stratigraphy, structure, and economic geology of the Iliamna quadrangle, Alaska. (Geology of the Iliamna quadrangle, Alaska) (Geological Survey bulletin ; 1368-B) Bibliography: p. B82 - B86. Supt. of Docs. no.: I 193:1368-B 1. Geology-Alaska-Alaska Peninsula. I. Reed, Bruce L., 1934- joint author. 11. Title. 111. Series. IV. Series: United States. Geological Survey. Bulletin ; 1368-B. QE75.B9 no. 1368-B [QE84.A34] 557.3'08s 1557.98'41 79-6071 15 For sale by the Superintendent of Documents, U. S. Government Printing Office Washington, D. C. 20402 Stock Nllmber 024-001 -03263-5 CONTENTS Page Abstract ........................................ B1 Introduction ____------------------------------------ 2 Previous work . ......................................... 3 Present investigat~ons---------------------------------.----- 4 Acknowledgments ___---------------------------------->-- 5 Geologic. setting _-----___-------------------------------5 Descriptive geology -~______-----------------------------6
    [Show full text]
  • By Robert L. Detterman-"
    DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Mesozoic blogeography of southern Alaska with implications for the paleogeography By Robert L. Detterman-"- Open-File Report 88-662 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS. Menlo Park, California CONTENTS Introducti on.................................................... 1 Tectonostratigraphic terranes...................................2 Biogeography....................................................3 Triassic biogeography........................................4 Jurassic biogeography........................................5 Hettangian................................................5 Sinemurian................................................5 Pliensbachian.............................................6 Toarcian..................................................6 Middle Jurassic...........................................7 Aalenian..................................................7 Bajoci an..................................................7 Bathonian.................................................8 Callovlan.................................................8 Oxfordian, Kimmeridgian, and Tithonian....................8 Cretaceous...................................................9 Berriasian and Valanginian...............................10 Hauterivian and Barremian................................10
    [Show full text]
  • La Sous-Famille Des Taramelliceratinae
    Carnets de Géologie / Notebooks on Geology – Mémoire 2009/02 (CG2009_M02) La Sous-Famille des Taramelliceratinae (Ammonitina, Haploceratoidea, Oppeliidae) de l'Oxfordien moyen et supérieur (Zone à Plicatilis, Sous-Zone à Vertebrale - Zone à Bimammatum, Sous-Zone à Berrense) du Nord de la Vienne, France (Province subméditerranéenne) 1 Philippe QUEREILHAC Résumé : Dans la région étudiée du Nord du Poitou, la Sous-Famille des Taramelliceratinae est présente dans tous les niveaux stratigraphiques, hormis la Sous-Zone à Schilli (très peu représentée) et la Sous-Zone à Stenocycloides dont la faune est constituée uniquement de Perisphinctidae et de Trimarginites sp. Bien que certaines d'espèces soient connues et citées en littérature, elles sont souvent mal interprétées : Taramelliceras (Taramelliceras) dentostriatum (QUENSTEDT), T. (T.) callice- rum (OPPEL), T. (Proscaphites) anar (OPPEL). La localisation stratigraphique des différentes espèces a été faite par l'association d'autres faunes de même récoltes, et par la présence (ou l'absence) de marqueurs stratigraphiques précis reconnus: par exemple, Neomorphoceras chapuisi (OPPEL) = Zone à Transversarium, Sous-Zone à Luciaeformis ; Taramelliceras (? Taramelliceras) colleti (LEE) = Zone à Transversarium, Sous-Zone à Rotoides ; "Epipeltoceras semimammatum" (QUENSTEDT) = Zone à Bimammatum, Sous-Zone à "Berrense", horizon à Semimammatum ; la disparition de Neoprionoceras lautlingensis (ROLLIER) présent dans la Sous-Zone à Parandieri, mais absent dans celle à Luciaeformis. D'autres qui ont été incorrectement positionnées stratigraphiquement: T. (T.) dento- striatum (QUENSTEDT), T. (T.) callicerum (OPPEL), T. (T.) externnodosum DORN, ont été restaurées à leur emplacement exact, déterminé à partir des collectes de l'auteur et de celles d'autres collectionneurs qui avaient pris note de leurs relation stratigraphiques avec d'autres espèces.
    [Show full text]
  • From Mount Crussol (Ardèche, France): Ontogeny, Variability and Dimorphism of the Genera Taramelliceras and Streblites (Ammonoidea)
    Revue de Paléobiologie, Genève (décembre 2011) 30 (2): 619-684 ISSN 0253-6730 The Oppeliidae of the Acanthicum Zone (Upper Kimmeridgian) from Mount Crussol (Ardèche, France): ontogeny, variability and dimorphism of the genera Taramelliceras and Streblites (Ammonoidea) Cyril BAUDOUIN1*, Patrick BOSELLI2* & Didier BERT3* Abstract The Kimmeridgian outcrops of the Mount Crussol (in Ardèche), already long known for their abundant ammonites, contain many Oppeliidae. The study of the Acanthicum Zone (Upper Kimmeridgian) enables us to conclude that the microconchs of Taramelliceras compsum (OPPEL) and Streblites weinlandi (OPPEL) correspond to forms previously described by the authors as Glochiceras (Lingulaticeras) crenosum QUENSTEDT and Creniceras dentatum (REINECKE). The study of a significant sample from a precise horizon leads to treat both T. compsum (OPPEL) and T. pseudoflexuosum (FAVRE) as two morphological elements from the same paleobiological species. This is the same for S. weinlandi (OPPEL) and S. levipictus (FONTANNES), which are morphologically very close. Finally, studying the genera’s variability highlights mechanisms underlying it (heterochrony of the development and “laws” of covariation). Keywords Ammonoidea; Oppeliidae; Taramelliceras; Streblites; Ochetoceras; Upper Kimmeridgian (Upper Jurassic); Crussol, Ardèche (France). Résumé Les Oppeliidae de la zone à Acanthicum (Kimméridgien supérieur) de la montagne de Crussol (Ardèche, France): ontogenèse, variabilité et dimorphisme des genres Taramelliceras et Streblites (Ammonoidea).-
    [Show full text]
  • Dimorphinites (Ammonoidea, Jurassic, Upper Bajocian) in the Precordillera of Northern Chile
    DIMORPHINITES (AMMONOIDEA, JURASSIC, UPPER BAJOCIAN) IN THE PRECORDILLERA OF NORTHERN CHILE SIXTO R. FERNA´ NDEZ-LO´ PEZ1 AND GUILLERMO B. CHONG DIAZ2 1Departamento de Paleontologı´a, Facultad de Ciencias Geolo´gicas (UCM) and Instituto de Geologı´a Econo´mica (CSIC-UCM), Madrid 28040, Spain, ,[email protected].; and 2Departamento de Ciencias Geolo´gicas, Universidad Cato´lica del Norte, Antofagasta, Chile, ,[email protected]. This pdf file is licensed for distribution in the form of electronic reprints and by way of personal or institu- tional websites authorized by the author(s). A copyright license has been purchased to make this possible. Journal of Paleontology, 85(3), 2011, p. 395–405 Copyright ’ 2011, The Paleontological Society 0022-3360/11/0085-0395$03.00 DIMORPHINITES (AMMONOIDEA, JURASSIC, UPPER BAJOCIAN) IN THE PRECORDILLERA OF NORTHERN CHILE SIXTO R. FERNA´ NDEZ-LO´ PEZ1 AND GUILLERMO B. CHONG DIAZ2 1Departamento de Paleontologı´a, Facultad de Ciencias Geolo´gicas (UCM) and Instituto de Geologı´a Econo´mica (CSIC-UCM), Madrid 28040, Spain, ,[email protected].; and 2Departamento de Ciencias Geolo´gicas, Universidad Cato´lica del Norte, Antofagasta, Chile, ,[email protected]. ABSTRACT—A new upper Bajocian ammonite assemblage containing the morphoceratids Dimorphinites dimorphus (d’Orbigny) and Vigoriceras defrancei (d’Orbigny) is reported from the circum-Pacific area. These ammonites were found at the top of the Torcazas Formation, in the Quebrada San Pedro area, Precordillera of northern Chile. Taphonomic, systematic, and paleobiogeographic data confirm these dimorphs were part of indigenous populations within the Tarapaca Basin, belonging to the same demic biospecies: Dimorphinites defrancei (d’Orbigny).
    [Show full text]
  • Print Article
    Palaeontologia Electronica http://palaeo-electronica.org NEW MIDDLE AND UPPER JURASSIC BELEMNITE ASSEMBLAGES FROM WEST ANTARCTICA (LATADY GROUP, ELLSWORTH LAND): TAXONOMY AND PALEOBIOGEOGRAPHY A. Brian Challinor and Dan C.H. Hikuroa A. Brian Chalinor. Department of Earth Sciences, University of Waikato, Private Bag 3105, Hamilton, New Zealand. [email protected] Dan C.H. Hikuroa. Department of Geology, University of Auckland, Private Bag 92019, Auckland, New Zealand (corresponding author). [email protected] ABSTRACT Six belemnite genera and up to 24 species (some informal) represented mainly by moulds are recorded from the Middle and Late Jurassic Latady Group, Ellsworth Land, West Antarctica. Belemnopsis and Hibolithes are moderately abundant, Dicoelites, Duvalia, Produvalia, Pachyduvalia, and Rhopaloteuthis are rare. The assemblages are best described as: a sparse aff. Brevibelus-Hibolithes fauna (Bajocian); a Belemnopsis fauna with rare Hibolithes, Duvaliidae and Dicoelitidae (late Bathonian-Oxfordian); and a more abundant fauna of Belemnopsis and Hibolithes, with less common Duvaliidae (Kimmeridgian-Tithonian). The Duvaliidae and short grooved Hibolithes likely migrated from Madagascar to Ellsworth Land via a trans-Gondwana seaway. Most Hibolithes are endemic to the region; they resemble and may be in part conspecific with the New Zealand Hibolithes arkelli-H. marwicki group (middle Tithonian). They appeared first in Ellsworth Land and migrated to New Zealand. The Belemnopsis are also endemic. One group resembles the New Zealand Belemnopsis annae-B. stevensi-B. keari group of the New Zealand Heterian Stage (Callovian to Kimmeridgian) and may have appeared first in Ellsworth Land. A second group of small robust Belemnopsis resem- bles broadly similar forms from the early Callovian and Kimmeridgian of New Zealand.
    [Show full text]