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THE CONCESIO FORMATION of the LOMBARDIAN RIFTED BASIN (Southern ALPS, Rtaly)
Rivista Italiana di Paleontologia e Stratigrafia volume tul numero I pagrne 49-64 ApriÌe 1996 THE CONCESIO FORMATION OF THE LOMBARDIAN RIFTED BASIN (souTHERN ALPS, rTALY). STRATIGRAPHY OF A JURASSIC CALCAREOUS TURBIDITE UNIT RICCARDO BERSEZIO, FABRIZIO FELLETTI, FRANCESCA LOZAR & MARCO RUGGERI Key-uords: calcareous turbidites, Jurassic, Lombardian Basin, downcurrent (westwards) and upsection by sheet-like calcarenite Southern Alps. stratigraphy. syn-ri[t sediments. units, very similar to depositional lobes, then by a basin plain facies association. Close to the Aalenian - Bajocian boundary the resulting Riassunto. La Formazione di Concesio è costituita da due lito- thinning and fining upwards megasequence was sealed by hemipelagic somi torbiditici, grosso modo corrispondenti ai membri dei Calcari marlstones, followed upsection by a basin plain facies association of Nocciola e dei Calcari Medoloidi (Auct.), che si svilupparono da sud- pelagic turbidites and pelagites. This second unit developed as a re- est verso nord-ovest, tra il Toarciano inferiore ed il Batoniano inferio- sponse of a major flooding event recorded by drowning of the re nel Bacino Sebino, la porzione orientale del Bacino Lombardo. platform succession of the Trento platform. I[ corpo torbiditìco inferiore (Toarciano-Aaleniano), alimenta- Turbidite deposition came to end before the Bathonian; du- to dall'erosione del margine di una piattaforma carbonatica e del suo ring this time interval sediment starvation and bottom current rewor- substrato, si configura come un prisma cuneiforme che termina sopra- king occurred throughout the Sebino Basin, slightly predating the corrente al bordo occidentale dell'alto strutturale del Botticino. Esso turnover to siliceous pelagic sedimentation (radiolarites of the Selcife- si chiude sottocorrente in relazione di onlap sul margine fagliato ro Group). -
A New Early Jurassic Marine Locality from Southwestern Chubut Basin, Argentina
Andean Geology 42 (3): 349-363. September, 2015 Andean Geology doi: 10.5027/andgeoV42n3-a0410.5027/andgeoV40n2-a?? www.andeangeology.cl A new Early Jurassic marine locality from southwestern Chubut Basin, Argentina * S. Mariel Ferrari1, Santiago Bessone1 1 Centro Nacional Patagónico (CENPAT), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Boulevard A. Brown 2915, Puerto Madryn 9120, Chubut, Argentina. [email protected]; [email protected] * Corresponding author: [email protected] ABSTRACT. A shallow marine invertebrate association is reported from a new Early Jurassic locality namely La Casilda, which is situated in the southwestern region of the Chubut Basin (Patagonia, Argentina). The marine deposits of La Casilda are located in the Río Genoa valley and bear a diverse invertebrate fauna including bivalves, gastropods, brachiopods, echinoderms and corals. A preliminary taxonomic analysis of the invertebrate fauna suggests that La Casilda deposits belong to the Mulanguiñeu Formation of late Pliensbachian-early Toarcian age, and may be coeval with those from the marine localities previously sampled in other regions of the Río Genoa valley. The preliminary results of a biodiversity analysis displayed that La Casilda is one of the most diverse localities at the Chubut Basin and could be assigned to the biofacies at the mixed siliciclastic-carbonate ramp proposed for the marine Early Jurassic at the Andean Basin of northern Chile. The evolution of the marine transgression during the early Pliensbachian-early Toarcian is also interpreted here in a time scale based on ammonite faunas, giving a preliminary temporal reconstruction of the entire Chubut Basin. Keywords: Invertebrates, La Casilda, Mulanguiñeu Formation, Chubut Basin, Argentina. -
Characteristic Jurassic Mollusks from Northern Alaska
Characteristic Jurassic Mollusks From Northern Alaska GEOLOGICAL SURVEY PROFESSIONAL PAPER 274-D Characteristic Jurassic Mollusks From Northern Alaska By RALPH W. IMLAY A SHORTER CONTRIBUTION TO GENERAL GEOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 274-D A study showing that the northern Alaskan faunal succession agrees with that elsewhere in the Boreal region and in other parts of North America and in northwest Europe UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1955 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - BMMH§ts (paper cover) Price $1.00 CONTENTS Page Abstract_________________ 69 Introduction _________________ 69 Biologic analysis____________ 69 Stratigraphic summary. _______ 70 Ages of fossils________________ 73 Comparisons with other faunas. 75 Ecological considerations___ _ 75 Geographic distribution____. 78 Summary of results ___________ 81 Systematic descriptions__ _. 82 Literature cited____________ 92 Index_____________________ 95 ILLUSTRATIONS [Plates &-13 follow Index] PLATE 8. Inoceramus and Gryphaea 9. Aucella 10. Amaltheus, Dactylioceras, "Arietites," Phylloceras, and Posidonia 11. Ludwigella, Dactylioceras, and Harpoceras. 12. Pseudocadoceras, Arcticoceras, Amoeboceras, Tmetoceras, Coeloceras, and Pseudolioceras 13. Reineckeia, Erycites, and Cylindroteuthis. Page FIGXTKE 20. Index map showing Jurassic fossil collection localities in northern Alaska. -
A Pterosaur from the Toarcian (Early Jurassic) of the Ardennes (Northeastern France) Eric Buffetaut, Bernard Gibout, Danielle Drouin
A pterosaur from the Toarcian (Early Jurassic) of the Ardennes (northeastern France) Eric Buffetaut, Bernard Gibout, Danielle Drouin To cite this version: Eric Buffetaut, Bernard Gibout, Danielle Drouin. A pterosaur from the Toarcian (Early Jurassic) of the Ardennes (northeastern France). Carnets de Geologie, Carnets de Geologie, 2009, CG2010 (L01), pp.1-6. hal-00458144 HAL Id: hal-00458144 https://hal.archives-ouvertes.fr/hal-00458144 Submitted on 19 Feb 2010 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. Carnets de Géologie / Notebooks on Geology - Letter 2010/01 (CG2010_L01) A pterosaur from the Toarcian (Early Jurassic) of the Ardennes (northeastern France) [Un ptérosaure dans le Toarcien (Jurassique inférieur) des Ardennes (NE de la France)] 1 Eric BUFFETAUT 2 Bernard GIBOUT 3 Danielle DROUIN Abstract: A pterosaur tibia-fibula is described from Toarcian shales ("Marne de Flize") near the city of Charleville-Mézières (Ardennes, northeastern France). The morphology of this element, especially the reduced fibula partially fused to the tibia, suggests that it belongs to the rhamphorhynchid Dorygnathus, which is well represented in the Toarcian Posidonienschiefer of Germany and has also been reported from the Toarcian of Nancy (eastern France). -
Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) 163-211 ©Geol
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Jahrbuch der Geologischen Bundesanstalt Jahr/Year: 1993 Band/Volume: 136 Autor(en)/Author(s): Meister Christian, Böhm Florian Artikel/Article: Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) 163-211 ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at Jb. Geol. B.-A. ISSN 0016-7800 Band 136 S.163-211 Wien, Juli 1993 Austroalpine Liassic Ammonites from the Adnet Formation (Northern Calcareous Alps) By CHRISTIAN MEISTER & FLORIAN BÖHM *) With 14 Text-Figures and 9 Plates Oslerreich Salzburg Oberöslerreich Nördliche Kalkalpen Lias Ammoniten Oslerreichische Karle 1. 50.000 Biostratigraphie BI/1l1er94, 95, 96,126 Palaeogeographie Contents Zusammenfassung 163 Abstract. .. 164 Resume 164 1. Introduction 164 2. Geographical and Geological Framework 164 3. Lithological Description and Qualitative/Quantitative Ammonite Distributions 165 3.1. Schmiedwirt Quarry 165 3.2. Breitenberg Quarry 166 3.3. Rotkogel Outcrop 166 3.4. Rötelstein Outcrop 168 4. Systematic Palaeontology 169 PhylioceratinaARKELL 1950 171 LytoceratinaHYATT1889 174 Ammonitina HYATT 1889 175 5. Biostratigraphical Framework 184 5.1. Sinemurian 184 5.1.1. Early Sinemurian 184 5.1.2. Late Sinemurian 184 5.2. Pliensbachian 184 5.2.1. Early Pliensbachian (Carixian) 184 5.2.2. Late Pliensbachian (Domerian) 186 5.3. Toarcian 186 6. Faunal Composition and Palaeogeographical Remarks 189 7. Conclusion 190 Acknowledgements 190 References 208 Oberostalpine Liasammoniten aus der Adnetformation (Nördlichen Kalkalpen) Zusammenfassung Das Oberostalpin spielt eine Schlüsselrolle für das Verständnis der Verteilungsmuster der jurassischen Ammonitenfaunen und für die Fixierung genauer biostratigraphischer Korrelationen zwischen Tethyaler und Euroborealer Faunenprovinz. -
Synthe,Sis of Calcareous Nannofossil Events in Tethyan Lower and Middle Jurassic Successions
Rivista Italiana di Paleontologìa e Stratigrafia SYNTHE,SIS OF CALCAREOUS NANNOFOSSIL EVENTS IN TETHYAN LOWER AND MIDDLE JURASSIC SUCCESSIONS EMANUELA MATTIOLIl 8. ELISABETTA ERBA2 Recebed March 18, /999; accepted September 2t, 1999 Key-uords: Calcareous nannofossils, biostratigraphl', Lower posto per l'intervallo Hettangiano-Batoniano sono srxri disrinti 4/ and Middie Juriissic, Te thys, Mcdrtcrrancan Province. eventi principàI basati su t;rxa resistcnti alla diagenesi e comuni, 17 eventi basati su taxa rari raa ubiqtiitari, e 12 eventi potenziaL che Abstact. This paper is a synthesis of calcareous nannofossil richiedono ulterrori controlli:r causa di problerni tassonomici e dis- biostretigrephy' for the Lower and Middle Jurassic of the Mediter- tribuzione sporadica. Vienc inoitre proposto per l'area retide:ì LÌno ranean Province based on several sections from Northern and Central schema biostratigrafico consistentc in i1 zone e 15 sorrozone Italy. Nannofossil events rvere calibrated n'ith ammonite biostratigra- La biostratigrafia propost:r é stara confronrate con recenti sin- phy and, when necessary ammonite-controlled sections in South East tesi biostratigrafiche conpilate per Portogallo, Marocco, Svizzera e ii Fr;rnce were incorporated. Data derive from previously published bio- Regno Boreale e sono stati ìnclividuatr 2Z er.enti riproducibili nelle strxtigrxphies and unpublished data of the authors. varie regioni. Il diacronisrno di rnolti bio-orizzontr é, e nostro awrso, 'I'he large data-set allowed estirnates of reliability and repro- apparente e dovuto essenzialmcnte elle diverse zoneziom ad Anmoni- ducibilitl' of single events. As r result, in the Hetr:rngran-Bathonian ti utilizzate in varie aree. In Italia/Francia, é possibile ottenere un' alta interval x.e propose 4/ nain events based on diagenesis-resistant and risoluzione stratigrafica per l'inten'allo Pliensbachiano-Baiociano. -
A Synoptic Review of the Vertebrate Fauna from the “Green Series
A synoptic review of the vertebrate fauna from the “Green Series” (Toarcian) of northeastern Germany with descriptions of new taxa: A contribution to the knowledge of Early Jurassic vertebrate palaeobiodiversity patterns I n a u g u r a l d i s s e r t a t i o n zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften (Dr. rer. nat.) der Mathematisch-Naturwissenschaftlichen Fakultät der Ernst-Moritz-Arndt-Universität Greifswald vorgelegt von Sebastian Stumpf geboren am 9. Oktober 1986 in Berlin-Hellersdorf Greifswald, Februar 2017 Dekan: Prof. Dr. Werner Weitschies 1. Gutachter: Prof. Dr. Ingelore Hinz-Schallreuter 2. Gutachter: Prof. Dr. Paul Martin Sander Tag des Promotionskolloquiums: 22. Juni 2017 2 Content 1. Introduction .................................................................................................................................. 4 2. Geological and Stratigraphic Framework .................................................................................... 5 3. Material and Methods ................................................................................................................... 8 4. Results and Conclusions ............................................................................................................... 9 4.1 Dinosaurs .................................................................................................................................. 10 4.2 Marine Reptiles ....................................................................................................................... -
Mercian 12 D.Indd
The occurrence of calcium phosphate in the Mesozoic and Tertiary of Eastern England Albert Horton Abstract: Phosphate is a minor component of Mesozoic and Tertiary formations. It occurs widely scattered as nodules in argillaceous sediments, but is commonly concentrated in pebble beds and may be found replacing fossils. Phosphatic animal remains are rare and commonly occur immediately above major discontinuities, and fossilised animal faeces (coprolites) are extremely rare. Phosphatic pisoliths occur at only one horizon. In Eastern England calcium phosphate occurs as coprolites, bones, fossil replacements, ill-defined impregnations, nodules, pebbles, pisoliths and hardgrounds in Mesozoic and Tertiary strata. Many geologists (eg. Horton et al., 1974, p.35) have been guilty of imprecise use of these terms. Using local examples it is possible to obtain a clear understanding of the diverse origins of these deposits. Phosphorus occurs as a minor element in igneous rocks. Weathering and erosion result in transfer of the element within detrital grains and in solution. In marine environments, the phosphorus may be concentrated by physical, chemical and biological processes, Figure 1. Coprolites from the basal Scunthorpe Mudstone ‘precipitated’ as calcium phosphate nodules, bones and Formation, Lias Group at Lyme Regis, Dorset (all photo coprolites and subsequently reworked as pebbles. courtesy of British Geological Survey). Coprolites The success of the early coprolite collectors may reflect the coprolites’ original large numbers and their Coprolites are trace fossils made up of faecal material. subsequent concentration by selective marine erosion Duffin (2009) records how in the 18th century a group with wave sorting of the dense material (Figs. 1 and of ornamented stones from the Chalk were thought to 2). -
Jurassic (170 - 199 Ma Time-Slice) Time
Early Jurassic (170 - 199 Ma time-slice) Time ScaLe R Creator CHRONOS Cen Mesozoic Updated by James G. Ogg (Purdue University) and Gabi Ogg to: GEOLOGIC TIME SCALE 2004 (Gradstein, F.M., Ogg, J.G., Smith, A.G., et al., 2004) and The CONCISE GEOLOGIC TIME SCALE (Ogg, J.G., Ogg, G., and Gradstein, F.M., 2008) Paleozoic Sponsored, in part, by: Precambrian ICS Based, in part, on: CENOZOIC-MESOZOIC BIOCHRONOSTRATIGRAPHY: JAN HARDENBOL, JACQUES THIERRY, MARTIN B. FARLEY, THIERRY JACQUIN, PIERRE-CHARLES DE GRACIANSKY, AND PETER R. VAIL,1998. Mesozoic and Cenozoic Sequence Chronostratigraphic Framework of European Basins in: De Graciansky, P.- C., Hardenbol, J., Jacquin, Th., Vail, P. R., and Farley, M. B., eds.; Mesozoic and Cenozoic Sequence Stratigraphy of European Basins, SEPM Special Publication 60. Standard Geo- Ammonites Sequences Ammonites Sequences Smaller Benthic Foraminifers Larger Benthic Foraminifers Calcareous Nannofossils Dinoflagellate Cysts Radiolarians Belemnites Brachiopods Ostracodes Charophytes Stage Age Chronostratigraphy magnetic North Atlantic Tethys Age Polarity Sequences Boreal Sequences T-R Major T-R Period Epoch Stage Substage Boreal Boreal T-R Cycles Tethyan Global, Tethyan Cycles Cycles Zones Tethyan markers Zones Zonal Markers Zonal Markers Zones Boreal Zonal Markers Other Boreal Nannofossils Zones Zonal Markers Other Dinocysts Tethyan Dinocysts Zones Zonal Markers NW Europe Boreal Tethyan Boreal Ostracodes Tethyan Ostracodes Markers Lt. Bajoc. Strenoceras niortense Teloceras banksi Strenoceras niortense Teloceras banksi DSJ14 Lithodinia valensii Belemnopsis Lissajouthyris Lissajouthyris [un-named] 169.8 Stephanolithion speciosum Mancodinium semitabulatum, 169.8 L. galeata mg P., speciosum Durotrigia daveyi, Phallocysta apiciconus matisconensis matisconensis Glyptocythere scitula Teloc. blagdeni Bj3 Telo. blagdeni Bj3 NJ10 Andromeda depressa, G. -
The Taxonomy and Systematics of Parapsicephalus Purdoni (Reptilia
The taxonomy and systematics of Parapsicephalus purdoni (Reptilia: Pterosauria) from the Lower Jurassic Whitby Mudstone Formation, Whitby, U.K. Michael O’Sullivan1 and David M. Martill2 1,2School of Earth and Environmental Sciences, University of Portsmouth, Burnaby Building, Burnaby Road, United Kingdom, PO1 3QL *Corresponding author: [email protected] Keywords: Pterosauria, Parapsicephalus, United Kingdom, taxonomy, Lower Jurassic, Toarcian. Abstract The Lower Jurassic (Toarcian) pterosaur Parapsicephalus purdoni (Newton, 1888) from the Whitby Mudstone Formation of North Yorkshire is known from a three-dimensionally preserved skull with brain cast. Since Newton’s original description, its taxonomic status has been contentious. Several cladistic studies have placed it within either Dimorphodontidae or Rhamphorhynchidae. Some investigators have suggested that it is a junior synonym of the Toarcian pterosaur Dorygnathus from the Posidonia Shale of south-western Germany. The holotype skull (GSM 3166) is redescribed and its taxonomic status re-evaluated. Several apomorphies place it suggest it belongs in the Rhamphorhynchidae while autapomorphies of the palate and jugal distinguish Parapsicephalus from Dorygnathus, supporting the continued separation of the two genera. 1. Introduction The Lower Jurassic marine strata of the United Kingdom yield a diverse assemblage of reptilian taxa (Owen, 1881), including ichthyosaurs, plesiosaurs, marine crocodiles and, more rarely, pterosaurs. While Lower Jurassic pterosaurs are best known from the Liassic strata of Dorset (Buckland, 1829; Benton and Spencer, 1995), one of the best preserved examples is a three-dimensional near-complete skull (GSM 3166, figs. 1, 2) from the Toarcian (~182 ma) Whitby Mudstone Formation of Loftus, Yorkshire. Identified as the holotype of Parapsicephalus purdoni by Newton, 1888, it is deposited in the British Geological Survey (BGS) at Keyworth, Nottinghamshire. -
Biostor-118662.Pdf
/v^ GL''i£. The stratigraphy and ammonite fauna of the Upper Lias of Northamptonshire ,^^ UBRAR'' M. K. Howarth Department of Palaeontology, British Museum (Natural History), Cromwell Road, London SW7 5BD Contents Abstract 235 Introduction . 236 Acknowledgements 237 Stratigraphical succession 237 The Yorkshire coast 243 Zonal subdivisions and correlation with Yorkshire 244 Correlations with other areas .... 246 England ....... 246 Southern France, the Alps and Italy . 247 North-eastern Siberia, northern Alaska, arctic Canada, Greenland, Spitzbergen 249 Palaeontology ..... 249 Family Dactylioceratidae Hyatt 249 Genus Dactylioceras Hyatt 252 Subgenus Orthodactylites Buckman 253 Dactylioceras {Orthodactylites) semiannulatum sp. nov. 253 Genus Nodicoeloceras Buckman . 256 Nodicoeloceras crassoides (Young & Bird) 256 Genus Peronoceras Hyatt .... 259 Peronoceras fibulatiim (J. de C. Sowerby) 260 Peronoceras turriculatum (Simpson) 262 Peronoceras subarmatum (Young & Bird) 262 Peronoceras perarmatum (Young & Bird) 263 Genus Zugodactylites Buckman . 264 Zugodactylites braUnianus (d'Orbigny) 268 Zugodactylites rotundiventer Buckman . 273 Zugodactylites thompsoni sp. nov. 274 Zugodactylites pseudobraunianus (Monestier) 276 Genus Porpoceras Buckman 278 Porpoceras vortex (Simpson) 280 References ....... 281 Index ........ 284 Abstract The Upper Lias of Northamptonshire is redescribed from a now obscured exposure of the 3 m of lime- stones and clays, up to the Upper Cephalopod Bed, that could formerly be seen above the Marlstone Rock Bed in a quarry near Byfield, and from Beeby Thompson's descriptions and collections from the overlying 50 m of clays that were exposed in numerous 19th-century brickpits around Northampton. The three lowest subzones of the Upper Lias occur in the top 1 m of the Marlstone Rock Bed. This is overlain by the Transition Bed of Semicelatum Subzone age and the Abnormal Fish Bed of Exaratum Subzone age. -
Biogeography Exercise Name ______
EART101: Biogeography exercise Name ______________________________ The Cordilleran belt of western North America is composed of a collage of exotic terranes, microcontinental blocks that originated as island arcs in the Pacific and later were accreted to the continental margin. You would like to know the location of these terranes in the past. The table below contains presence/absence data for Early Jurassic ammonite species from three accreted terranes (Wrangellia W, Stikinia S, and Quesnellia Q) and from the North American continent (Boreal Craton BC and Sonomia So). The Boreal Craton represents higher-latitude, cooler-water faunas and Sonomia contained lower-latitude, warmer-water faunas. W S Q BC So Amaltheus X X X X Pleuroceras X Pseudoamaltheus X Becheiceras X X Arieticeras X X X X Fontanelliceras X Fuciniceras X X X Leptaleoceras X X Lioceratoides X X X Protogrammoceras X X X X X Aveyroniceras X X X Prodactylioceras X X X Reynesoceras X X Cymbites X Fanninoceras X X X X Phylloceras X 1. Calculate Jaccard similarity coefficients between each of the accreted terranes (W, S, and Q), and between the terranes and the two stable continent regions BC and So. The Jaccard coefficient is M/(N1+N2-M), where M is the number of taxa shared between the two regions, N1 is the number of taxa in region 1, and N2 is the number of taxa in region 2. Fill in your answers in the table below. W S Q BC So W S Q BC So 2. For each terrane, determine its approximate paleolatitude in the Early Jurassic.