DOCSLIB.ORG

The Boreal-Tethyan Biogeographical Mollusc Ecotone in Europe During the Juras Sic-Cretaceous Transition

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Boreal-Tethyan Biogeographical Mollusc Ecotone in Europe During the Juras Sic-Cretaceous Transition Rivist;r It;rlian;r di Paleontologi;r e Str';.rtigrafia volLltìtr' I Iu no. I pp. 339-344 April 2004 THE BOREAL-TETHYAN BIOGEOGRAPHICAL MOLLUSC ECOTONE IN EUROPE DURING THE JURAS SIC-CRETACEOUS TRANSITION VICTOR A. ZAKHAROV & MIKHAIL A. ROGOV' Receit'ed October 9, 2002; Ltccepted October 7, 2003 Kel';'or,1t: nrollusc;.r, biogeographical ecotone, Jurassic/ ceous in the Boreal-Pacific Realm (Zakharov et aL. 1996). Cretlceous, Europe. The position of the Boreal-Tethyan ecotone in the Bo- real-Atlantic Realm from Late Volgian to Early Neoco- Abstr,tct. Llte Jur;rssic ;rrrd e;rrliest Crctaceous molluscs of the northern henrispherc s,ere clistinctly cìifferentiated geographicellv into mian is assumed on the basis of ammonites (Zakharov Bore,rl t,rr,r, usuallv north of 50' N, end Tethr.an trx;r, usuallv sourh of 8c Bosomolov 1998). It is very important to investigate -15'N. Betl,een these l;rtitudes certain lreas rvere displaced îronr tinre the Boreal-Tethyan migrations inside the ecotone at the to tinlc', ,rlthough the biogeographic;rl ecotonc was stable. The nrrsni- Jurassic/Cretzlceous transition to make a precise correia- tude of the ecotone and the migration of nrolluscs inside the ecotone tion between the Tithonian-Voleian and the Berriasian- variccl in tinrc lnd spacc, in direction (unidirectional and bìdirection- ,rl) ,rnd intcnsitr'(erp;rnsion;lnd "isoliìtc str;u'ing"). The frequencv of Boreal Berriasian. the Boreal-Tethvirn nrigriìtions of nrolluscs is explaincd b1. custacy and bl,geogr.rphicrl barriers existing betu.een the Northern C,ruclsus and Middle-Russìrn brsins. Material and methods Riassurtto.l rrolluschi nr;rrìni del Giur;rssìco superiore e del pri- D;rta on anrnronite, belemnite and bivalve migrations across the rlo Cret,tcc'o dell'cnrislcro scttcntrion,rle creno nettalrellte diffc.renzi;rti south nrlrsin of the Boreal-Atlantic Realnr fronr Lare Jurassic (Kimmer- d;rl pr.rnto di vistr geografico in tara boreali, di solito r Nord dei 50'N, idgirn :rnd Vrlgian) to Earll' Neocomiirn (Boreal Berriasian -Valangin- e tetidei, Sud dei Tra queste Jatitr,rdini certe lree trrxl di solito;r 45'N. ian) rvere revicwed. The migrltions were considered at substage inter- venivano di voltl in volta sposriÌte, sebbene l'ccotono bioseosrafico vals. The latitudes of 45'and 50'N rvere accepted as the northern mar- fosse stabile. L;rnrpiezz;r dell'ecotono e h migr:rzione dei molluschi ll gìn of thc Tethls-Pantalassa Super-realm, and as the southern m.rrgin suo interno è r.ariatr nel tempo e nello spezio, in direz-ione (unidirezio- of the P;rnbore;rl Sr-rper-realnr, respectively. A taxon "advancing" from nale e bidirczìonale) ed ìntensità (espansione e "dìspersione isolat,r"). north to south lnd crossing 50" N was considered a boreal influence, La frequenz;r delle nrisr;rzioni borelli-tetidee deì molluschi è spiegat;r and the limit of Tethl'xn influence s.as ser ar the crossing of 45" N for dall'eustasil e dall'esistcnza un;r b;rrrier;r geografica bacinì del di tra i taxa "nroving" fronr south to north. C;ruc;rso setterrtrionale e della Russia centriÌle. Nes molluscan data collected over the last few decades, mainly from UpperJurassic lnd Lower Neocomian sequences of Europe, have irnproved our knon,ledge of the Boreal-Tethyan ecotone, of the posi- tion of the southern margin of the Boreal-Atlantic Realm (Sachs et al. lntroduction l9l1; Fis. l), and of the migr:rtìon of Tethyan mollusc associations and taxll into:rnd from the Boreal basins (Fig.2). Mìgrations with differ- The Boreal-Tethyan biogeographical ecotone exist- ent intensities ;rnd directìon from the Kimrneridsian ro the Valanginian, ed in Europe during the late Jurassic-earliest Cretaceous considered in thìs paper, rvere restricted to the Boreal-Atlantic Realm represented by a co-occurrence of Boreal and Tethyan (\ùí/est Europe;rn and East European Provinces). The nrolluscs, such as ;rnrnronoìcls, belenrnites lnd bìr,alves, were divided into 3 groups: Teth- forms. Durins the Mesozoic it was located in the North- y;rn, Boreal and Sub-boreal (nrostlv with Tethyan affinities typical for ern Hemisphere alons the Tethys-Pantalassa Panboreal / thc ccotones). It is impossible to attribute some ammonoids, such as Super-realms boundary. The ecotone was established by PhylJoceratide and Lytoceratìda, to either the Tethyan or Boreal Realm. the molluscs in the Triassic, Jurassic and Early Creta- Thcir clistribution n;rs probabll' controlled b1' u'atcr depth. Geologicel Institute of RAS, Pvzhevskii Lirnc, Moscol,, 1O9O1Z, Russia. E-m;ril: nrzarctic(ri mtu-net.ru; rogor,_m(i.rambler.ru 340 V. A. Zakharov 8< M. A. Rogor., Fig. 1 - Boreal-Tethyan ecotone rn the Upper Kimmeridgian (Autissiodorensis Chron) o{ Europe. 1 - land; 2 - Teth- yanammonites,3-Sub- boreal ammonites, 4 - Bo- real ammonites; 5-10. Finds of the selected anrmonire genera: Sub-boreal: 5 - Graoesia, 6 - Aulacostepba- nus; Boreal: 7 - Suboxydis- cites, 8- Amoeboceras; Teth- yan: 9 - Metahaploceras/ Neochetoceras, 10 - Aspido- ceras. -t3--'jr5 ffi 1i_--- I2l r6t7v 8n9 o 10 Results grations of the Mediterranean ammonoids into the East- European Province during the Latest Kimmeridgian and It is interesting to note that in Europe an ammonite Early Volgian), while influences refer to the moving ecotone was either absent for a rather long time (from the of separate taxa, usually with an insignificant number of Latest Volgian to the beginning of the Valanginian) or specimens (e.g., penetration of Aspidoceras îorrh:ward in- quite restricted (during the Late Boreal Berriasian). Sub- to West Siberia). Expansions quite often lead to the start- boreal ammonites are either unknown or they occupied ing of endemic clades (e.g. Riasanites in Central Russia, a small area (e.g. Garniericeras). At the beginning of the Late Valanginian Neocomitidae of '$festern Europe), but Valan ginian, P latylenticera.s appeared, presumably from they may be restricted to short intervals without new Boreal ancestors, but its geographical distribution was taxa. The most indicative example of such migrations typically Sub-boreal. During the Berriasian and Valangin- was the penetration of numerous Anaspidoceras neobur- ian, the bivalve Bwchia extended to the South, up to 48o gense into the East-European Province during the Early \West-European N in the Province of the Boreal-Atlan- Voigian (Pseudoscythica Chron, neoburgense hemera) tic Realm, and reached 42 - 40'N in the East-European (Rogov 2002). Buchia bivalves also illustrate the inten- Province (Zakharov 198 1 ; Kelly 1 990) . Tethyan trigoniid sity of migrations. The migration-influences in the Bo- bivalves penetrated up to 55o N into the East-European real-Atlantic Realm took place during the Late Jurassic Province during the Volgian (Gerasimov 1955). The most - Early Neocomian in the West-European Province (Fig. northern penetration of Tethyan ammonoids known was 2a), and during the Berriasian - Valanginian in the East- made by Aspidoceras (Late Kimmeridgian, East-European European Province (Fig. 2b). Province, 65" N; Bogomolov & Dzyuba 1998; Fig.1). Two kinds of migrations were determined based Based on intensity, migrations are subdivided into on the direction of penetration: bidirectional (e.g., Vol- expansions (mass migrations) and influences (isolated gian- Early Berriasian) and unidirectional (e.g., latest Va- <straying>, after Rawson 1973).Expansions are charac- langinian of \lest-European Province). Bidirectional Bo- terized by the moving of mollusc associations (e.g., mi- real-Tethyan migrations are explained by a reduction of Boreal-Tethyan ecotoile in Upper Jurassic of Europe 341 a ). Borcal-Atlantic Rcal nr ( Wcst-Europe'an Provincc ; I 'iiiiii.iir.ril..rrlr Krrrr- l-.rtc K11- l:rrlr \lrtltllc I rrl.' l.rrlr l-.ttc . .l .rtlr l.ltu !, = i ;ì;i,.jr;:;; Titlrrrrìan Tithrrnrrrr Titlrrrnnrr l.lcnr.rirrn Llcnrr:rarr \.rl.lrì!lrìr.It \ililt)rtDt.ril i =:: : - /; f .,,1r fiin- f ,rr:Î;x-- l .rrlr \lrLlJlr I irtr lJ.,r..rl I .rII\ Lirl( /- 2 --= . ntcr'i,lgrrn nrerrrl_rr,rl \irllrin Yolgrirn \irlgtiu Bctttlstrn Vrlrnrrirrrn \:rhnginirn " t=t 80 80 o a c) .î\a- : :: o ì! (.) o= o ì> 70 hil .! iì ì>*:ì ,i E 0) :.! n I ^.-$ o (_) <{ :q -q: ìi: Ì E! I 60 t. I Èò s :-: c- Ò a< rrl a <() t ì{ -Y- rr 50i 50 c) ,--+.--, tha K S9 '._Ia I e8 l"l È at- 40 1 o E .)iì E* 40 -i UN -Y- í<{! g 6 E> =x o() o. : 30'E :s ì: ,;ó -àà 30 :l.i: On- .eó l.l I g t :< !^jìs ^z =è 20E !È 20 FT b). Bclrcal-Atlantic Rcalnr ( East-Europcan Provincc) l:.rrlr \'lrdril.' l.rt.' |Jrl\ l..ltJ I trrll Lrrc . fitlrruirn-litltrnr.rtt IitìtLrnntt [Jcrn,titrn Ilct ri.r.r.ril \.tl.rtì!rDt.ttì \.rl.rrrLrilr.rrr =- - tn-l r:: \lrtitilc L.rlc ll.rrrrrl lrrlr l.îtc l- | \irlgrrn \irìgrrrn . llcrrnsrrrn Vilxn!rilnn Vrllrruinirrr lffi | \ Àa 80 f- | ar )rr.È + a \ = iì r.\ l/r lqqrr=-l ì ì=! ai o !!r 0) 70 trs: Q' h := N8 = 10 -:> < x ìì o)- E a! ì.F^l ! lc) x as o - v- È x .:ì ì .9 ÈV:?- o 60 60 È-j-._-------- =.: .B A.s _--. v E ilp î 91 50 ùÒ; 50 .sE _g_. Ar -_t OJ 9.9 40 .g ÉÉ z6 oP 40- t o= 'fr-;o o0 -oB riOE} !o r! Jfl l)o É, b 30 g9 àÉ .Í E€ .lo O 330 aa<G= só clti ó o LÀ 20 20 tìig. 2 - Setting of the Borell-Tethy:rn ecotone lnd bounclary benveen Boreal ;rnd Tethl's-Pantalass:r Super-realnrs from Kimnreridgian to Va- hnginian. l-2 - Bore;rl (A) and Tethvan (ll) expansions ( 1) and isoletecl strîving (2); 3 - finds of Rudistr together with Boreal amnro- nites; 4-findsofTethl,anbelenrnites (Hibolithes) torcthcrwithboreal anrmonites; 5-findsof hemratypiccoralstogetherwithboreal ;rrrnronires; 6-occ;rnic;rmÌìlonitcsinthchighlrtitudes(Ph-Phvlloceratid;r;I--Lytoceratìda; B-Ilocbíanites);7-ecotonebasedon lmnronoids; 8 - ecotone b;rsed on lnrnronites;rnd bir';rhcs or onlv on bir':rlves.
Load more

Recommended publications
  • Abstract Book Progeo 2Ed 20
    Abstract Book BUILDING CONNECTIONS FOR GLOBAL GEOCONSERVATION Editors: G. Lozano, J. Luengo, A. Cabrera Internationaland J. Vegas 10th International ProGEO online Symposium ABSTRACT BOOK BUILDING CONNECTIONS FOR GLOBAL GEOCONSERVATION Editors Gonzalo Lozano, Javier Luengo, Ana Cabrera and Juana Vegas Instituto Geológico y Minero de España 2021 Building connections for global geoconservation. X International ProGEO Symposium Ministerio de Ciencia e Innovación Instituto Geológico y Minero de España 2021 Lengua/s: Inglés NIPO: 836-21-003-8 ISBN: 978-84-9138-112-9 Gratuita / Unitaria / En línea / pdf © INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA Ríos Rosas, 23. 28003 MADRID (SPAIN) ISBN: 978-84-9138-112-9 10th International ProGEO Online Symposium. June, 2021. Abstracts Book. Editors: Gonzalo Lozano, Javier Luengo, Ana Cabrera and Juana Vegas Symposium Logo design: María José Torres Cover Photo: Granitic Tor. Geosite: Ortigosa del Monte’s nubbin (Segovia, Spain). Author: Gonzalo Lozano. Cover Design: Javier Luengo and Gonzalo Lozano Layout and typesetting: Ana Cabrera 10th International ProGEO Online Symposium 2021 Organizing Committee, Instituto Geológico y Minero de España: Juana Vegas Andrés Díez-Herrero Enrique Díaz-Martínez Gonzalo Lozano Ana Cabrera Javier Luengo Luis Carcavilla Ángel Salazar Rincón Scientific Committee: Daniel Ballesteros Inés Galindo Silvia Menéndez Eduardo Barrón Ewa Glowniak Fernando Miranda José Brilha Marcela Gómez Manu Monge Ganuzas Margaret Brocx Maria Helena Henriques Kevin Page Viola Bruschi Asier Hilario Paulo Pereira Carles Canet Gergely Horváth Isabel Rábano Thais Canesin Tapio Kananoja Joao Rocha Tom Casadevall Jerónimo López-Martínez Ana Rodrigo Graciela Delvene Ljerka Marjanac Jonas Satkünas Lars Erikstad Álvaro Márquez Martina Stupar Esperanza Fernández Esther Martín-González Marina Vdovets PRESENTATION The first international meeting on geoconservation was held in The Netherlands in 1988, with the presence of seven European countries.
    [Show full text]
  • Materialsbookjurassiccretaceou
    УДК: 551.762.3/763.12 ББК 26.323 The International Scientific Conference on the Jurassic/Cretaceous boundary. September 7-13, 2015, Samara (Russia). – Togliatti: Kassandra, 2015. – 102 p. The present volume compiles short papers with new data on the Jurassic-Cretaceous boundary strata and their fauna of different regions of Russia (Volga region, Siberia, Crimea, Primorye) and of North America. Most papers are devoted to problems of biostratigraphy and paleontology of marine animals and their trace fossils. Besides this, some data on magnetostratigraphy, interregional correlations, history of defining J/K boundary in the Decisions of ISC, and eoomic value of the interval. For geologists, paleontologists, stratigraphers, students of geological and geographical profiles. Responsible editors: E.Yu. Baraboshkin, D.E. Bykov Editorial board: M.A. Rogov, A.Yu. Guzhikov, V.V. Arkadiev, V.V. Gusev, A.A. Konovalova Technical editor: A.P. Ippolitov Layouts: A.P. Ippolitov English translation of papers by V.V. Efimov, I.A. Meleshin, E.L.Vasileva, A.P.Pronin and F.M. Kuanyshev: A.P. Ippolitov Международная научная конференция по проблеме границы юрской и мело- вой систем. 7-13 сентября 2015 г., г.Самара (Россия): Материалы совещания. – Тольятти: Издательство «Кассандра», 2015. – 102 с. В сборнике опубликованы новые данные о пограничных отложениях юры и мела различных регионов России (Поволжье, Сибирь, Крым, Приморье) и Северной Америки. Большинство работ посвящено био- стратиграфии и палеонтологии морских животных и следов их жизнедеятельности. Кроме того, приво- дятся сведения о магнитостратиграфии, межрегиональной корреляции, истории проведения границы юры и мела в постановлениях МСК, и экономической важности этого интервала. Сборник представляет интерес для геологов, палеонтологов, стратиграфов, студентов геологиче- ского и географического факультетов.
    [Show full text]
  • Age of Neuburg Formation (Bavaria, Federal Republic of Germany) and Its Correlation with the Subboreal Volgian and Mediterranean Tithonian
    Berlin • Stuttgart, 30. 3. 1989 Newsl. Stratigr. 20 (3) 149-169 Fig- Age of Neuburg Formation (Bavaria, Federal Republic of Germany) and its correlation with the Subboreal Volgian and Mediterranean Tithonian by J. A. JELETZKY t* with 2 figures Abstract. Only the topmost Bed 238 of the Neuburg Formation is a lower Upper Tithonian deposit I middle and upper microcantbum Zone). The basal Upper Tithonian (Simplisphinaes Zone) is faulted out. The rest of the Oberhausen Member (Beds 117-237) is an upper Lower Tithonian deposit (fallauxi to ponti/Burckhardticeras Zones). The Unterhausen Member (i.e. the Pseudolissoceras bavaricum Zone), except for its basal Bed 22, is a middle Lower Tithonian (= lower Middle Tithonian of some authors) deposit correlative with the semiforme/verruciferum Zone of the Mediterranean standard. The Zaraiskites scythicus Zone of Central Poland and Central Russia is roughly equivalent to the Beds 102-112 of the Unterhausen Member bearing Zaraiskites-like ammonites. Therefore, it is a middle Lower Tithonian deposit correlative with the upper S'-iiforme/verruciferum Zone. The next older Ilowaiskya pseudoscythica Zone of these two Subboreal regions corresponds to the lower semiforme/verruciferum and upper darwmil albemnum Zones of the Mediterranean Province as well as to the Bed 22 and the upper Rennertshofen Beds of the Franconian Basin. Therefore, the Central Russian Virgatites virgatus and Epivirgatites nikitmi Zones correspond to the upper Lower Tithonian fallauxi to pontilBurckhardticeras Zones of the Mediterranean standard. The entire Portlandian Stage of England is a Lower Tithonian deposit. Isterites and Pseudovirgatites are exclusively mid to late Early Tithonian genera. The controversial Central European Pseudovirgatites scruposus Zone appears to be correlative with the upper semijormel verruciferum and Zaraiskites scythicus Zones.
    [Show full text]
  • The Russian Platform As a Key Region for Volgian
    Rivista Italiana di Prleontoloeia e Stratigrafia volume 1l0 no. l , pr IlI ;' ,t'.;r; I .a,prirzoo+ THE RUSSIAN PLATFORM AS A KEY REGION FOR VOLGIAN/TITHONIAN CORRELATION: A REVIE\tr OF THE MEDITERRANEAN FAUNAL ELEMENTS AND AMMONITE BIOSTRATIGRAPHY OF THE VOLGIAN STAGE MIKHAIL A. ROGOV' Receit-ted September 19, 2002; accepted October 3, 2003 Key uords. Jurassic, Volgian, Tithonian, Boreal-Teth1'an correla- Introduction tion, amnronites, biostratigraphy, Russian Platform. Over the last few decades several papers devot- Abstract. A review of the ammonite faunas and biostratieraphy ed to the analysis of mixed Boreal-Tethyan associations of the uppern.rost Kimmeridgian - lowermosr Middle Volgian of Central of Mollusca, and Tithonian-Volgian correlations (Zeiss Russia is presented. The major role of the Sub-n-rediterranean ammonites in the Volgian assemblages is described, providins additional detail to 2001Kutek & Zeiss 1997;Hoedemaeker 1991; Sachs et the existine scheme of Tithonian-Volgian correlations. The base of the a\.1979: Mesezhnikov 1989; Sey tr Kalacheva1993,1.997; Tithonian and the base of the Volgian are coincident, based on the asso- Schweigert 1.993, 1.994, 2000; Scherzinger Er Schweigert ciation of Neoc/retocerds steraspis-Lingulaticeras soLenoides.The Klimovi 1999) have been published. Unfortunately, material from Zone corresponds to nrost of the Hybonotum Zone. However, the top the Russian Platform was either not studied during those of the Hybonotum Zone, based on the distribution of Paralingulati- ceras, Íalls within the Sokolovi Zone.The allocation of r Tenuicostata investigations, or only ammonites never described and il- Subzone (with two horizons: neoburgense and puschi) in the Pseudo- lustrated before were mentioned.
    [Show full text]
  • 9 Paleontological Conference Th
    Polish Academy of Sciences Institute of Paleobiology 9th Paleontological Conference Warszawa, 10–11 October 2008 Abstracts Warszawa Praha Bratislava Edited by Andrzej Pisera, Maria Aleksandra Bitner and Adam T. Halamski Honorary Committee Prof. Oldrich Fatka, Charles University of Prague, Prague Prof. Josef Michalík, Slovak Academy of Sciences, Bratislava Assoc. Prof. Jerzy Nawrocki, Polish Geological Institute, Warszawa Prof. Tadeusz Peryt, Polish Geological Institute, Warszawa Prof. Grzegorz Racki, Institute of Paleobiology, Warszawa Prof. Jerzy Trammer, University of Warsaw, Warszawa Prof. Alfred Uchman, Jagiellonian University, Kraków Martyna Wojciechowska, National Geographic Polska, Warszawa Organizing Committee Dr Maria Aleksandra Bitner (Secretary), Błażej Błażejewski, MSc, Prof. Andrzej Gaździcki, Dr Adam T. Halamski, Assoc. Prof. Anna Kozłowska, Assoc. Prof. Andrzej Pisera Sponsors Institute of Paleobiology, Warszawa Polish Geological Institute, Warszawa National Geographic Polska, Warszawa Precoptic Co., Warszawa Cover picture: Quenstedtoceras henrici Douvillé, 1912 Cover designed by Aleksandra Hołda−Michalska Copyright © Instytut Paleobiologii PAN Nakład 150 egz. Typesetting and Layout: Aleksandra Szmielew Warszawska Drukarnia Naukowa PAN ABSTRACTS Paleotemperature and paleodiet reconstruction on the base of oxygen and carbon isotopes from mammoth tusk dentine and horse teeth enamel during Late Paleolith and Mesolith MARTINA ÁBELOVÁ State Geological Institute of Dionýz Štúr, Mlynská dolina 1, SK−817 04 Bratislava 11, Slovak Republic; [email protected] The use of stable isotopes has proven to be one of the most effective methods in re− constructing paleoenvironments and paleodiet through the upper Pleistocene period (e.g. Fricke et al. 1998; Genoni et al. 1998; Bocherens 2003). This study demonstrates how isotopic data can be employed alongside other forms of evidence to inform on past at great time depths, making it especially relevant to the Palaeolithic where there is a wealth of material potentially available for study.
    [Show full text]
  • Late Jurassic Ammonites from Alaska
    Late Jurassic Ammonites From Alaska GEOLOGICAL SURVEY PROFESSIONAL PAPER 1190 Late Jurassic Ammonites From Alaska By RALPH W. IMLAY GEOLOGICAL SURVEY PROFESSIONAL PAPER 1190 Studies of the Late jurassic ammonites of Alaska enables fairly close age determinations and correlations to be made with Upper Jurassic ammonite and stratigraphic sequences elsewhere in the world UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1981 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress catalog-card No. 81-600164 For sale by the Distribution Branch, U.S. Geological Survey, 604 South Pickett Street, Alexandria, VA 22304 CONTENTS Page Page Abstract ----------------------------------------- 1 Ages and correlations -----------------------------­ 19 19 Introduction -------------------------------------- 2 Early to early middle Oxfordian --------------­ Biologic analysis _________________________________ _ 14 Late middle Oxfordian to early late Kimmeridgian 20 Latest Kimmeridgian and early Tithonian _____ _ 21 Biostratigraphic summary ------------------------- 14 Late Tithonian ______________________________ _ 21 ~ortheastern Alaska -------------------------­ 14 Ammonite faunal setting --------------------------­ 22 Wrangell Mountains -------------------------- 15 Geographic distribution ---------------------------- 23 Talkeetna Mountains -------------------------­ 17 Systematic descriptions ___________________________ _ 28 Tuxedni Bay-Iniskin Bay area ----------------- 17 References
    [Show full text]
  • 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.
    [Show full text]
  • Boreal–Tethyan Biogeographical Ecotone Setting in Europe During Jurassic–Cretaceous Transitional Time on the Base of Mollusca
    BOREAL–TETHYAN BIOGEOGRAPHICAL ECOTONE SETTING IN EUROPE DURING JURASSIC–CRETACEOUS TRANSITIONAL TIME ON THE BASE OF MOLLUSCA. V. A. ZAKHAROV and M. A. ROGOV Geological institute of RAS, Pyzhevskii Lane, 7, 109017 Moscow, Russia Abstract: Mollusca of northern hemisphere in Late Jurassic and most Early Cretaceous were rather distinctly geographically differentiated on boreal, which occurs in the seas, placed, as a rule, to the north of 50 parallels and tethyan inhabited the seas placed usually to the south of 45 parallels. Between these latitudes long time on the certain aquatic areas, being from time to time displaced in space, biogeographical ecotone is settled. Key words: mollusca, biogeographical ecotone, Jurassic/Cretaceous, Europe The new data received per last decade on mollusca mainly from Upper Jurassic and Lower Neocomian sequences of Europe, have allowed more precisely to establish the setting of Boreal-Tethyan ecotone in Late Jurassic and Early Neocomian and to determine a geographical position of southern border of the Boreal-Atlantic Realm (Saks et al., 1971; fig. 1а, b). The new time intervals of moving of associations and separate taxons of tethyan mollusca in Boreal basins and back are established (fig. 2). The migrations (M) with the different intensity was occur during Kimmeridgian up to Valanginian and were restricted by the Boreal-Atlantic Realm in West-European [W-Е] and East Europe [E-Е] provinces. A mollusca: an ammonites, belemnites and bivalves were divided into 4 groups: tethyan and boreal (most numerous groups), subboreal: mostly with the tethyan affinities (they were most typical for ecotones) and Arctic (assumed as extremely boreal).
    [Show full text]
  • Regional Correlation of Jurassic/Cretaceous
    CORE Metadata, citation and similar papers at core.ac.uk Provided by NERC Open Research Archive 1 Regional correlation of Jurassic/Cretaceous boundary strata based on the Tithonian to 2 Valanginian dinoflagellate cyst biostratigraphy of the Volga Basin, western Russia 3 4 Ian C. Harding a,*, Giles A. Smith b, James B. Riding c, William A.P. Wimbledon b 5 6 a School of Ocean and Earth Science, University of Southampton, National 7 Oceanography Centre - Southampton, European Way, Southampton SO14 3ZH, United 8 Kingdom 9 b Department of Earth Sciences, University of Bristol, Wills Memorial Building, 10 Queen’s Road, Bristol BS8 1RJ, United Kingdom 11 c British Geological Survey, Kingsley Dunham Centre, Keyworth, Nottingham NG12 12 5GG, United Kingdom 13 14 * Corresponding author. E-mail address: [email protected] (Ian C. Harding). 15 16 17 ABSTRACT 18 19 Precise stratal correlation of Jurassic/Cretaceous boundary successions in the Boreal 20 Province, including the western European and Russian regions, based on ammonite 21 biostratigraphy remain significantly problematical due to widespread faunal 22 provincialism. In order to help clarify this situation, the marine palynology of the 23 Tithonian (uppermost Jurassic) and the Berriasian and Valanginian (Lower Cretaceous) 24 strata exposed on the banks of the River Volga at Gorodishche and Kashpir, near 25 Ul’yanovsk, has been studied in detail. Over 100 dinoflagellate cyst species were 26 recovered, and their ranges used to compile a detailed Tithonian to Valanginian 27 palynostratigraphy for the Volga Basin. First and last appearance datums of key 28 dinoflagellate cyst taxa are used to define ages for unreliably dated strata in the Russian 29 successions by comparison with the stratigraphical ranges of the same taxa calibrated to 30 ammonite zones in Boreal northwest Europe.
    [Show full text]
  • A New Tithonian Ammonoid Fauna from Kurdistan, Northern Iraq
    A NEW TITHONIAN AMMONOID FAUNA FROM KURDISTAN, NORTHERN IRAQ BY L. F. SPATH, F.R.S. Pp• 93-146; Pis. 6-10 BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) GEOLOGY Vol. 1 No. 4 LONDON : 1950 THE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY), instituted in 1949, is to be issued in five series, corresponding to the Departments of the Museum. Parts will appear at irregular intervals as they become ready. V olumes will contain about three or four hundred pages, and will not necessarily be completed within one calendar year. This paper is Vol. i, No. 4, of the Geological series. PRINTED BY ORDER OF THE TRUSTEES OF THE BRITISH MUSEUM Issued August 1950 Price Ten Shillings A NEW TITHONIAN AMMONOID FAUNA FROM KURDISTAN, NORTHERN IRAQ By L. F. SPATH , F.R.S. CONTENTS I. INTRODUCTION . 96 II. STRATIGRAPHICAL SUMMARY 96 III. SYSTEMATIC DESCRIPTIONS 97 Family Oppelidae Haug . 97' Sub-Family Streblitinae Spath . 97 Genus Oxylenticeras gen. nov. 97 Oxylenticeras lepidum sp. nov. 99 Family Haploceratidae Zittel . 100 Genus Glochiceras Hyatt . 100 Glochiceras (?) sp. juv. ind. 100 Glochiceras (?) sp. nov. 101 Genus Pseudolissoceras Spath . 101 Pseudolissoceras zitteli (Burckhardt) 101 Pseudolissoceras advena sp. nov. 102 Genus Lamellaptychus Trauth . 104 Lamellaptychus sp. ind. 104 Family Perisphinctidae Hyatt . 104 Sub-Family Virgatosphinctinae Spath . 104 Genus Phanerostephanus gen. nov. 104 Phanerostephanus subsenex sp. nov. 105 Phanerostephanus hudsoni sp. nov. 107 Phanerostephanus intermedius sp. nov. 107 Phanerostephanus dalmasiformis sp. nov. 109 Genus Nannostephanus gen. nov. 109 Nannostephanus subcornutus sp. nov. 111 Nannostephanus sp. ind. 111 Sub-Family Virgatitinae Spath . 112 Genus Nothostephanus gen. nov.
    [Show full text]
  • Ammonites of Tethyan Origin in the Ryazanian Stage of the Russian Platform: Genus Mazenoticeras and Other Neocomitidae V
    ISSN 00310301, Paleontological Journal, 2011, Vol. 45, No. 2, pp. 143–153. © Pleiades Publishing, Ltd., 2011 Original Russian Text © V.V. Mitta, 2011, published in Paleontologicheskii Zhurnal, 2011, No. 2, pp. 25–33. Ammonites of Tethyan Origin in the Ryazanian Stage of the Russian Platform: Genus Mazenoticeras and Other Neocomitidae V. V. Mitta Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya 123, Moscow, 117997 Russia email: [email protected] Received April 21, 2010 Abstract—Ammonites from the Riasanites rjasanensis Zone (Ryazanian Stage of the Russian Platform) of the family Neocomitidae are considered. The new species Mazenoticeras robustum sp. nov. and M. ceccai sp. nov. are described. Other members of this genus and of the genera Malbosiceras and Pomeliceras are identified in open nomenclature. Keywords: ammonites, Neocomitidae, Mazenoticeras, Pomeliceras, Malbosiceras, Ryazanian Stage, Berria sian Stage, Russian platform. DOI: 10.1134/S0031030111020122 INTRODUCTION (Wright et al., 1996), it includes, apart from the nomino Some time ago I (Mitta, 2008) began a series of papers typical subfamily, the subfamilies Berriasellinae Spath, on results of taxonomic studies of taxonomic diversity of 1922 and Endemoceratinae Schindewolf, 1966. How ammonites of “Tethyan” origin in the Ryazanian Stage ever, the absence of a substantiated phylogeny, which (Central Russian equivalent of the Berriasian Stage would take into account shell morphogenesis and orna (Lower Cretaceous, Standard scale)). In this paper I con mentation, sutural ontogeny, stratigraphic distribution sider ammonites of the family Neocomitidae belonging and biogeography makes the delineation between Neo to the genera Malbosiceras Grigorieva, 1938, Pomeliceras comitinae and Berriasellinae unclear. The origin of the Grigorieva, 1938, and Mazenoticeras Nikolov, 1966.
    [Show full text]
  • JURASSIC-LOWER CRETACEOUS -.: Palaeontologia Polonica
    KRZYSZTOF BIRKENMAJER , HALINA PUGACZEWSKA and ANDRZEJ WIERZBOWSKI THE JANUSFJELLET FORMATION (JURASSIC-LOWER CRETACEOUS) AT MYKLEGARDFJELLET, EAST SPITSBERGEN BIRKENMAJER, K; PUGACZEWSKA, H. and WIERZBOWSKI, A.,: The Janusfjellet Formation (Jurassic-Lower Cretaceous) at Myklegardfjellet, cast Spitsbergen.Palaeont. Polonica, 43, 107-140. \ Fossiliferous marine strata of the Janusfjellet Formation (Jurassic-Lower Cretaceous) are describ­ ed from Myklcgardfjellet, Agardhbukta area , east Spitsbergen. The invertebrate fauna collected by the first author from these beds in 1977 has been determin ed by the second author (serpulids, bivalves, belemnites) and by the third author (ammonit es). This assemblage allows to distinguish the Upper Callovian, the Kimmeridgian (Lower and Upper) and the Lower Volgian stages in the lower part of the Janusfjellet Formation (Agardhfjellet Member) . The upper part of the Janusfjellet Formation (Rurikfjellet Member) yielded poorly preserved fossils of litt le stratigraphic value . Key words: Mesozoic, stratigraphy, ammonites, bivalves, belemni tes, serpulids, Spitsbergen, K. Birkenmajer, Ins tytut Nauk Geologicznych,Po/ska Akademia Nauk, 31-002 Krakow, Senacka 3 ; H. Pugaczewska, Zakiad Paleobiologii,Po/ska Akademia Nauk, 02-089 Warszawa, Z lI'irki i Wigury 93; A. Wierzbowski, Instytut Geologii Podsta wowej, Unlwersytet Warszawskl, 02-089 Warszawa, Z wirki i Wigury 93, Po/and. Received: June 1979. FORMACJA JANUSFJELLET (JU RA - DOLNA KR EDA) MYKLEGARDFJELLET. WSCHODNI SPITSBERGEN Streszczenie. - W pracy przedstawion o wyniki bada ri nad stra tygrafia formacji Janusfjellet (jura-d olna kreda) na Mykle­ gardfj ellet (obszar Agardhbukta) na wschodnim Spitsbergenie. Fauna bezkregowco w pochodzaca z tych warstw zostala zebrana przez pierwszcgo autora podczas kierowanej przez niego polsko-amerykanskiej ekspedycji dzialajqcej w 1977 r. na wschodnim Spitsbergcnie, Zesp61 skamienialoSci zawierajacy og61em 33 gatunki rnalzow, belemni t6w, serpulid (opi­ sanych przez H.
    [Show full text]