Triassic and Jurassic of the Sikhote-Alin
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Anisian (Middle Triassic) Ammonoids from North America: Quantitative Biochronology and Biodiversity
Anisian (Middle Triassic) ammonoids from North America: quantitative biochronology and biodiversity Claude Monnet and Hugo Bucher Paläontologisches Institut und Museum, Universität Zürich, Karl Schmid Strasse 4, CH-8006 Zürich, Switzerland email: [email protected]; [email protected] ABSTRACT: This study synthesizes and revises the ammonoid zonations as well as their correlation with each other for western Nevada (USA), British Columbia (Canada), and the Sverdrup Basin (Canada) by utilizing the unitary association method. Based on a standard- ized taxonomy, the Anisian in the studied areas contains 13, 10, and 3 zones and a total of 174, 90, and 7 species, respectively. The zonations are correlated by means of a ‘common taxa zonation’, which includes all taxa common to the studied basins. This leads to new and more precise correlations, which are at slight variance with those of the literature. Hence, the Buddhaites hagei Zone (Canada) corre- lates only with the Intornites mctaggarti Subzone (Nevada) and not with the entire Acrochordiceras hyatti Zone (Nevada). The Tetsaoceras hayesi Zone (Canada) appears to correlate with the Unionvillites hadleyi Subzone (Nevada) of the hyatti Zone and not with the Nevadisculites taylori Zone. The Hollandites minor Zone (Canada) more than likely correlates with the taylori Zone (Nevada) rather than the Balatonites shoshonensis Zone as is usually acknowledged. The unitary association method enables us to quantify the diachronism of the studied taxa, which affects about 67% of the genera and 18% of the species common to Nevada and British Columbia. Therefore, this diachronism is significant and its value for correlation should not be overlooked. -
The Magnetobiostratigraphy of the Middle Triassic and the Latest Early Triassic from Spitsbergen, Arctic Norway Mark W
Intercalibration of Boreal and Tethyan time scales: the magnetobiostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway Mark W. Hounslow,1 Mengyu Hu,1 Atle Mørk,2,6 Wolfgang Weitschat,3 Jorunn Os Vigran,2 Vassil Karloukovski1 & Michael J. Orchard5 1 Centre for Environmental Magnetism and Palaeomagnetism, Geography, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, UK 2 SINTEF Petroleum Research, NO-7465 Trondheim, Norway 3 Geological-Palaeontological Institute and Museum, University of Hamburg, Bundesstrasse 55, DE-20146 Hamburg, Germany 5 Geological Survey of Canada, 101-605 Robson Street, Vancouver, BC, V6B 5J3, Canada 6 Department of Geology and Mineral Resources Engineering, Norwegian University of Sciences and Technology, NO-7491 Trondheim, Norway Keywords Abstract Ammonoid biostratigraphy; Boreal; conodonts; magnetostratigraphy; Middle An integrated biomagnetostratigraphic study of the latest Early Triassic to Triassic. the upper parts of the Middle Triassic, at Milne Edwardsfjellet in central Spitsbergen, Svalbard, allows a detailed correlation of Boreal and Tethyan Correspondence biostratigraphies. The biostratigraphy consists of ammonoid and palynomorph Mark W. Hounslow, Centre for Environmental zonations, supported by conodonts, through some 234 m of succession in two Magnetism and Palaeomagnetism, adjacent sections. The magnetostratigraphy consists of 10 substantive normal— Geography, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster, LA1 reverse polarity chrons, defined by sampling at 150 stratigraphic levels. The 4YQ, UK. E-mail: [email protected] magnetization is carried by magnetite and an unidentified magnetic sulphide, and is difficult to fully separate from a strong present-day-like magnetization. doi:10.1111/j.1751-8369.2008.00074.x The biomagnetostratigraphy from the late Olenekian (Vendomdalen Member) is supplemented by data from nearby Vikinghøgda. -
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I I Rivista Italiana di Paleon roìor,iaeSrrltrqrriia I rolur ;;- -, | f;-' "oo, l UPPER OLENEKIAN (SPATHIAN) AMMONOIDS FROM CHIOS (LO\T/ER TRIASSIC, GREECE): TAXONOMY AND STRATIGRAPHIC POSITION. DOROTHEE MERTMANN' & VOLKER TACOBSHAGEN' Receh:ed July 1st,2002; accepted June 25,20A3 Key-raords: Ammonoidea, Triassic, Olenekian, Chios, Greece. There, the fossils are included in red limestones of rhe Hallstatt facies (Marmarorrapeza. Formation). Renz & Abstact. On the Greek island of Chios, Lower Triassic sections Renz (1948) have delivered rich ammonoid faunas from red limestones of the Hall- published a palaeontological description of statt facies. Here, we present a palaeontological description of Spatl-rian its ammonoids in a monograph. Bender (1970) was the ammonoids, which have been collected during two field campaigns by first to collect fossils from measured sections (CM i, kalian-German teams (Assereto et al. 1980; Gaetani et al. 1992). The II, III) in order to establish coordinared ammonoid and ammonoid assocìations are composed of Ceratitida and Phyllocerati- conodont stratigraphies. This author recognized, more- da, each order containing species of the Noritaceae, Hedenstroemia- ceae, Xenodiscaceae, Dinaritaceae, Pinacocerataceae, Phyllocerataceae, over, that the Spathian beds are overlain by lowermost Ptychitaceae, lJssuritaceae and Megaphyllitaceae. Long ranging gen- Anisian ones s/ith ammonoids comparable with faunas era, e.g. Procarnites and Leioplrylliter, are present as well as endemic of the so-called Hydaspian substage from the Himalayas ones, e.g. Cbiotites, which occurs exclusively in the Lower Trìassic of and Timor. Furthermore, Jacobshagen & Tietze (1974) Chios. The ammonoìd association is indicative of the Probungarites- described an associarion of both Spathian and Lower Subcolwmbites zone sensu Kumn.rel (1973a,). -
Anisian Ammonoids from Qingyan
1661-8726/08/020546-16 Swiss J. Geosci. 101 (2008) 547–562 DOI 10.1007/s00015-008-1274-0 Birkhäuser Verlag, Basel, 2008 Anisian ammonoids from Qingyan, southwestern China: biostratigraphical implications for the age of the Qingyan Formation FRANK STILLER1, * & HUGO BUCHER 2 Key words: ammonoids, Anisian, Qingyan Formation, southwestern China, taxonomy, biostratigraphy ABSTRACT The Upper Qingyan Formation in the northeastern vicinity of Qingyan, Gui- blage correlates with the Billingsites cordeyi Subzone in northwestern Nevada zhou Province, southwestern China, yields an ammonoid sequence comprising and the Rieppelites cimeganus Zone in Lombardy. The middle/late Anisian a latest middle Anisian assemblage in its lower part followed by an earliest late boundary is situated in the upper middle part of the highly fossiliferous sec- Anisian assemblage in its middle and upper parts. Age-diagnostic genera of tion at Leidapo. Judging from re-study of available and figured specimens, the lower assemblage include Bulogites and Acrochordiceras; additional gen- reports of stratigraphically younger taxa such as Paraceratites trinodosus from era comprise Proarcestes, Sageceras, and Beyrichitinae gen. indet. This assem- the Upper Qingyan Formation of this area are based on misidentifications. blage well correlates with the Bulogites mojsvari Subzone in northwestern Ne- The time interval represented by the Qingyan Formation at its type locality is vada and the Bulogites zoldianus Zone in Lombardy and Hungary. The upper not equal to the Anisian as has long been supposed in Chinese stratigraphy. assemblage comprises the age-diagnostic genera Rieppelites and Judicarites; An earliest late Anisian age for the uppermost strata of the Qingyan Forma- additional characteristic genera include Ptychites and Gosauites. -
ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT Abh
©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT Abh. Geol. B.-A. ISSN 0016–7800 ISBN 3-85316-14-X Band 57 S. 407–422 Wien, Februar 2002 Cephalopods – Present and Past Editors: H. Summesberger, K. Histon & A. Daurer Scavenging or Predation? – Mississippian Ammonoid Accumulations in Carbonate Concretion Halos Around Rayonnoceras (Actinoceratoidea – Nautiloidea) Body Chambers from Arkansas ROYAL H. MAPES & RODNEY B. DALTON*) 3 Text-Figures, 1 Table and 4 Plates USA Arkansas Carboniferous Mississippian Cephalopods Ammonoidea Nautiloidea Predation Contents Zusammenfassung ...................................................................................................... 407 Abstract ................................................................................................................. 408 1. Introduction ............................................................................................................. 408 2. Previous Reports and Discussion ......................................................................................... 408 3. Focus of this Study ...................................................................................................... 409 4. Localities ............................................................................................................... 409 4.1. Fayetteville Formation Concretions .................................................................................. 409 4.2. Comparative Concretions from Other Places and -
Paleontological Contributions
THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS May 15, 1970 Paper 47 SIGNIFICANCE OF SUTURES IN PHYLOGENY OF AMMONOIDEA JURGEN KULLMANN AND JOST WIEDMANN Universinit Tubingen, Germany ABSTRACT Because of their complex structure ammonoid sutures offer best possibilities for the recognition of homologies. Sutures comprise a set of individual elements, which may be changed during the course of ontogeny and phylogeny as a result of heterotopy, hetero- morphy, and heterochrony. By means of a morphogenetic symbol terminology, sutural formulas may be established which show the composition of adult sutures as well as their ontogenetic development. WEDEKIND ' S terminology system is preferred because it is the oldest and morphogenetically the most consequent, whereas RUZHENTSEV ' S system seems to be inadequate because of its usage of different symbols for homologous elements. WEDEKIND ' S system includes only five symbols: E (for external lobe), L (for lateral lobe), I (for internal lobe), A (for adventitious lobe), U (for umbilical lobe). Investigations on ontogenetic development show that all taxonomic groups of the entire superorder Ammonoidea can be compared one with another by means of their sutural development, expressed by their sutural formulas. Most of the higher and many of the lower taxa can be solely characterized and arranged in phylogenetic relationship by use of their sutural formulas. INTRODUCTION Today very few ammonoid workers doubt the (e.g., conch shape, sculpture, growth lines) rep- importance of sutures as indication of ammonoid resent less complicated structures; therefore, phylogeny. The considerable advances in our numerous homeomorphs restrict the usefulness of knowledge of ammonoid evolution during recent these features for phylogenetic investigations. -
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References Autor(en): [s.n.] Objekttyp: ReferenceList Zeitschrift: Eclogae Geologicae Helvetiae Band (Jahr): 82 (1989) Heft 3 PDF erstellt am: 25.09.2021 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. Dies gilt auch für Inhalte Dritter, die über dieses Angebot zugänglich sind. Ein Dienst der ETH-Bibliothek ETH Zürich, Rämistrasse 101, 8092 Zürich, Schweiz, www.library.ethz.ch http://www.e-periodica.ch 984 H. Bucher Fig. 26. Suture line (x 6) of Ussurites sp. indet. at D 24 mm. USNM 438373. Ussurites detwilleri n. sp. Plate 7, Figure 1 Description. Inner whorls evolute, rounded and ribbed. Further development shows increasing spacing of radial ribs which gradually fade on outer whorls. Whorl section simultaneously changes into an ovoid outline. Umbilical margin is then well individualized and slightly convex flanks gently converge towards the permanently broadly arched venter. -
Late Triassic and Early Jurassic Phylloceratids from the Salzkammergut (Northern Calcareous Alps)
©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Gedenkband zum 100. Todestag von Dionys Stur Redaktion: Harald Lobitzer & Albert Daurer Jb. Geol. B.-A. ISSN 0016-7800 Band 136 Heft4 S.933-963 Wien, Dezember 1993 Late Triassic and Early Jurassic Phylloceratids from the Salzkammergut (Northern Calcareous Alps) By MILO~ RAKlJS*) With 19 Text-Figures and 5 Plates Oberösterreich Steiermark Satzkammergut Nördtiche Ka/ka/pen Ober/rias Osterreichische Kartei: 50.000 Lias Blätter 96,97 Ammoniten Contents Zusammenfassung 933 Abstract. .. 933 1. Introduction 933 2. Systematic Part 934 3. The Phyllogeny of the Late Triassic and Early Jurassic Phylloceratids and their Possible Relationship with Jurassic Ammonites 950 Acknowledgements. .. 952 References 962 Phylloceratiden aus der Obertrias und dem Unterlias des Salzkammergutes (Nördliche Kalkalpen) Zusammenfassung Gegenstand dieser Arbeit ist eine Revision der obertriadischen und liassischen phylloceratiden Ammoniten, die anhand des Originalmaterials von HAUER(1846), E. MOJSISOVICS(1873) and 1902), M. NEUMAYR(1879) und F. WÄHNER(1882-1898) durchgeführt wurde. Die beschriebenen Taxa werden in den Sammlungen der Geologischen Bundesanstalt und des Naturhistorischen Museums in Wien sowie der Bayerischen Staatssammlung in Mün- chen aufbewahrt. Außerdem wird das neue Ammonitengenus Togaticeras und Fergusonites neumayri sp.nov. beschrieben. Weiters werden phyllogenetische Probleme der obertriadischen und liassischen Phylloceratiden und deren mögliche Verwandtschaftsbeziehungen zu jurassischen Taxa diskutiert. Abstract This article deals with the reassessment of the Late Triassic and Early Jurassic Phylloceratid cephalopods which was carried out on the original specimens of F. HAUER(1846). E. MOJSISOVICS(1873 and 1902), M. NEUMAYR(1879) and F. WÄHNER(1882-1898). The subject specimens are deposited in the collections of GBA and NHM in Vienna (Austria) as well as in BSM in Munich (Germany). -
Stratigraphy and Ammonoids from the Middle Triassic Botneheia Formation (Daonella Shales) of Spitsbergen
Mitt. Geol.-Paläont. Inst. S. 27-54 Univ. Hamburg Heft 54 Hamburg, Dezember 1983 Stratigraphy and ammonoids from the Middle Triassic Botneheia Formation (Daonella Shales) of Spitsbergen WOLFGANG WEITSCHAT & ULRICH LEHMANN*) With plates 1-6, 2 tables and 9 text-figures Contents Abstract 27 Zusammenfassung 28 I. Introduction 28 II. Stratigraphy 28 a) Previous work 28 b) Descriptionof thesections 30 c) Age and correlation 33 III. Systematic Paleontology 36 IV. References 53 Abstract Sections of the Middle Triassic Daonella Shales (Botneheia Formation) of the Is- fjorden region of Spitsbergen are measured and their fossil contents of ammonoids are described and stratigraphically analyzed. A revised biostratigraphical Interpretation of this sequence is given. The Daonella Shales yield f ossilif erous nodule layers with dif f er- ent ammonoid f aunas which permit a threef old subdivision into the f ollowing ammonoid zonation: T T ^;„;^„ zone of Indigirites tozeri Lower Ladinian zpne pf Tsvetkovites vaHus Upper Anisian zone of Frechites laqueatus A correlation of this zonal sequence with the Middle Triassic beds of Taymyr Penin- sula, NE USSR, and NE British Columbia is discussed. Seven genera with eight species are described in detail. Tsvetkovites varius n. sp. and Indigirites tozeri n. sp. are new to science. A special attention is given to the ex- tremely high infraspecific Variation of the ammonoid faunas investigated. *) Address of authors: Dr. W. WEITSCHAT and Prof. Dr. U. LEHMANN, Geologisch-Paläon tologisches Institut und Museum der Universität Hamburg, Bundesstr. 55, D-2000 Hamburg 13, Germany (F.R.) 27 Zusammenfassung Profile der Mitteltriassischen Daonellen-Schiefer der Eisfjord-Region Spitzber gens wurden vermessen und die in ihnen enthaltenen Ammoniten beschrieben und stra- tigraphisch ausgewertet. -
Palaeontographica Beitrage Zur Naturgeschichte Der Vorzeit
SONDER-ABDRUCK aus PALAEONTOGRAPHICA BEITRAGE ZUR NATURGESCHICHTE DER VORZEIT Pal. A. Bd. 207 ANISIAN-LADINIAN BOUNDARY IN BOREAL REGION BASED ON AMMONOEDEA BY V. V. ARKADIEV and M. N. VAVILOV With 2 plates, 19 figures and 2 tables in the text STUTTGART E. SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG (NAGELE u. OBERMILLER) 1989 Palaeontographica Abt. A 207 Lfg. 1-3 49-78 Stuttgart, April 1989 ANISIAN-LADINIAN BOUNDARY IN BOREAL REGION BASED ON AMMONOIDEA BY V. V. ARKADIEV and M. N. VAVILOV^ With 2 plates, 19 figures and 2 tables in the text Zusammenfassung Beschrieben werden die Ammonoideen der Anis-Ladin-Randablagerungen vom NE der UdSSR, die den Arten Longobardites, Indigirites, Eutomoceras, Frechites, Monophyllites, Arctoptychites angehoren. Untersucht wird die Morphologie der Schalen von Longobardites,, Indigirites in Queranschliffen sowie die stratigraphische Verteilung dieser Arten. Angegeben wird auch die ontogenetische Entwicklung der Lobenlinie. Eingehend wird die Lage der Grenze zwischen Anis und Ladin in den Borealgebieten betrachtet. Eine neue Moglichkeit der Grenzziehung zwischen Anis und Ladin wird angegeben. Schlusselworter: Ammonoidea — Trias — UdSSR — Biostratigraphie — Ontogenese. Summary The paper describes Ammonoidea from the Anisian-Ladinian boundary deposits in the North-East of the USSR, belonging to Longo- bardites, Indigirites, Eutomoceras, Frechites, Monophyllites, Arctoptychites. The morphology of shells belonging to Longobardites and Indigirites is studied in polished sections, stratigraphic distribution of these genera is analyzed and data on the ontogeny of their lobe line development are given. The location of the boundary between the Anisian and Ladinian stages in Boreal region is discussed in detail and a new version of its establishment is suggested. Key words: Ammonoidea — Triassic — USSR — ontogeny — biostratigraphy. -
64. the Akiyoshi Orogenic Cycle in the Mongolian Geosyncline*. by Teiichi KOBAYASHI
306 [Vol. 18, 64. The Akiyoshi Orogenic Cycle in the Mongolian Geosyncline*. By Teiichi KOBAYASHI. (Comm.by T. KATO,M.I.A., June 12, 1942.) Since Schonmann had expressed the opinion in 1929 that the Mongolio-Amur Faltengurtel had been a geosyncline which was disturbed by late Mesozoic orogenses, it was a moot question among geologists, as discussed by Stille, Obrutschew and othersl'. It is the object of this paper to demonstrate that the Akiyoshi, instead of the Sakawa, cycle of orgenesis2' is responsible for the oronization of the Mongolian geosyncline. A thick Palaeozoic complex for which I proposed the name , Mammo ( i) group3', is the sediment in the geosyncline existing between the Altenseheitel and the Yenshan orogenic zone. Because it is one of the least known but nevertheless one of the most important f ormational unit in the geology of Eastern Asia, I have paid special attention to it since I studied a small collecl,ion of fossils from Soron in the middle part of the Great Khingan range in 19314'. On the basis of fresh evidences which we obtained in Manchoukuo, its stratigraphic succession can now be roughly sketched as follows : 1. The lowest of the group so far known is the Ordovician Orthis sandstone of the Tyktaminda on the Siberian side of the Upper Amur valley where it is overlain by the Gotlandian Galymene manly shale. In the same area there is a good display of the fossiliferousDevonian formation composedmostly of shale and limestone in the lower part, of marl, limestone and reef limestone in the middle and of limestone in the upper parts). -
Middle Triassic)
GSSP of base of Ladinian The Global Boundary Stratotype Section and Point (GSSP) for the Base of the LADINIAN STAGE (Middle Triassic) A proposal for the GSSP at the base of the curionii zone in the Bagolino section (Southern Alps, Northern Italy) Peter Brack1, Hans Rieber2, Alda Nicora3 1Departement Erdwissenschaften, ETH-Zentrum, CH-8092 Zürich 2Paläontologisches Institut, Universität Zürich, CH-8006 Zürich 3Dipartimento di Scienze della Terra, Università di Milano, Via Mangiagalli 34, I-20133 Milano ABSTRACT the South Alpine Buchenstein Beds and siliceous The Global boundary Stratotype Section and Point limestones of Bakony (Hungary). Because (GSSP) for the Base of the LADINIAN STAGE Mojsisovics erroneously equated this interval with (Middle Triassic) is defined at the top of a distinctive parts of the ammonoid-rich Hallstatt-limestones, 20-cm-thick groove (= “Chiesense groove”) of he used the term “Norian” as the stage name. limestone nodules in a shaley matrix, located about “Norian” refers to the Norian Alps around Hallstatt 5 m above the base of the Buchenstein Beds in the near Salzburg (Austria). Later, the Hallstatt- Caffaro river bed (45°49ʼ09.5ʼʼN, 10°28ʼ15.5ʼʼE), ammonoids turned out to be much younger. Bittner south of the village of Bagolino (Province of (1892) therefore proposed the term “ladinisch” Brescia, northern Italy). The lower surface of (Ladinian) as a new label of the stratigraphic the overlying thick limestone bed has the lowest interval of South Alpine Buchenstein and Wengen occurrence of the ammonoid Eoprotrachyceras Beds. Although not accepted by Mojsisovics et al. curionii (base of the E. curionii zone; onset of the (1895), “Ladinian” was subsequently a generally Trachyceratidae ammonoid family).