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AMMONITE FAUNAS, BIOSTRATIGRAPHY AND SEQUENCE STRATIGRAPHY OF THE CONIACIAN-SANTONIAN OF THE CORBIERES (NE PYRENEES) FAUNES D'AMMONITES, 8/0STRAT/GRAPH/E ET STRATIGRAPHIE SEQUENTIELLE DU CONIACIEN-SANTONIEN DES CORBIERES (NE DES PYRENEES) William James KENNEOY, Michel BILOTTE and Patrice MELCHIOR KENNEDY, W.J., BILOTIE, M. & MELCHIOR, P. (1995). - Ammonite faunas, biostra­ tigraphy and sequence stratigraphy of the Coniacian-Santonian of the Corbieres (NE Pyrenees). [Faunes d'ammonites, biostratigraphie et stratigraphie sequen­ tielle du Coniacien-Santonien des Corbieres (NE des Pyrenees)]. - Bull. Centres Rech. Explor.-Prod. Elf Aquitaine, 19, 2. 377-499, 38 fig., 30 pi.; Pau, December 26, 1995. - ISSN : 0396-2687. CODEN : BCREDP. Les faunes d'ammonites du Coniacien-Santonien des Corbieres sont revisees, et pres de 100 especes et sous-especes sont decrites. Les 4 zones d'associations classiques du Coniacien de I'Europe occidentale ont ete retrouvees, respectivement de la plus ancienne a la plus recente, les zones a Forresteria (Harleites) petroco­ riensis, Peroniceras (Peroniceras) tridorsatum, Gauthiericeras margae et Paratexa­ nites serratomarginatus. La base du Santonien est marquee par un important renouvellement faunique. Une seule zone d'association, a Placenticeras polyopsis, est reconnue; elle est divisee en 3 sous-zones, de bas en haut, les sous-zones a Nowakites carezi. Texanites ( Texanites) gallicus et Placenticeras paraplanum. ces especes ayant des extensions partielles concomittantes. Ni P. polyopsis, ni T. ( T.) gal/icusn'app araissent des la base du Santonien, dans les Corbieres; cette absence des placenticeratides comme des texanitides a la base du Santonien des Corbieres pourrait t!!tre liee a des conditions ecologiques defavorables. Les successions d'am­ monites etablies sont integrees aux sequences de depOt de l'intervalle de temps considere; les ll.ges absolus qui s' attachent a quelques especes fournissent la trame d'un premier cadre chronostratigraphique. William James Kennedy, Geological Collections, University Museum, Parks Road, Oxford, OX1 3PW. U.K.; Michel Bilotte, URA 1405 du CNRS, et Laboratoire de Geologie Sedimentaire et de Paleontologie, Universite Paui-Sabatier, To ulouse Ill, 39, a/lees Jules-Guesde, F-31062 To ulouse cEoEX; Patrice Melchior, Roquetaillade, F-11300 Limoux. -September 4, 1995. Mots-clefs : Monographie, Faune ammonite, Biostratigraphie. Coniacien, Santonien, Ammonoidea, Stratigraphie sequentielle, Aude, Corbieres. ABSTRACT and Placenticeras paraplanum. These species have partially over­ lapping ranges. Neither P. polyopsis nor T. (T.) gallicus range to the base of the Santonian in the Corbieres; placenticeratids and The Coniacian-Santonian ammonite faunas of the Corbieres are texanitids are absent from the lowest part of the stage there, pre­ revised, and nearly 100 species/subspecies described. The Conia­ sumably as a result of ecological exclusion. The ammonite succes­ cian can be subdivided into four assemblage zones. as elsewhere sion is integrated with the sequence stratigraphy of the interval. Forresteria (Harleites) in Western Europe, with successive zones of and provides a basis for assigning numerical ages to parts of the petrocoriensis, Peroniceras (Peroniceras) tridorsatum, Gaulhierice­ sequence. ras margae and Paratexanites serratomarginatus. The base of the Santonian is a level of marked faunal turnover. A single Assemblage Key words : Monographs, Ammonoids, Biostratigraphy, Coniacian, Zone of Placenticeras polyopsis is recognized, divided into Assem­ Santonian, Ammonoidea, Sequence stratigraphy, Aude, Cor­ blage Sub zones of Nowakites carezi, Texanites ( Texanites) gallicus, bieres. 0396-2687/95/0019-0377 $ 24.60 © 1995 elf aquitaine production, F-64018 Pau 378 W.J KENNEDY. M BILOTTE AND P MELCHIOR BCREDP 19 (1995) search through existing collections confirms this view, and CONTEN TS - TABLE DES MATII�RE5 shows the Santonian of the region to yield the most diverse fauna yet recognized in Western Europe, while the Conia­ INTRODUCTION ............................................................................ 378 cian yields four successive zonal assemblages that confirm 1. - REGIONAL GEOLOGY - G�OLOGIE R�GIONALE........ 378 the succession inferred by KENNEDY (1984a, b) elsewhere in France. Revision of these faunas show the Corbieres to be 1 .1. Previous work - Tr avaux anterieurs .. ...... .............. .... 378 a key region for our understanding of Coniacian-Santonian 1.2. Lithostratigraphy - Lithostratigraphie ....................... 378 ammonite stratigraphy; this stratigraphy can be integrated la - Les 1.2.1. The Gres de Sals (B,Lom, 1985) with the series of third order sedimentary sequences recent­ Gres de la Sals (81LOTTE, 1985)..................... 380 ly identified by BILOTTE ( 1992, 1993), while certain marker 1.2.2. The Calcaires de Montferrand (JAcos, 1938) species can be assigned chronostratigraphic ages on the - Les Ca/caires de Montferrand (JAcoa, basis of their occurrence the United States Western 1938) .. 380 in Interior, where they are associated with well-dated bento­ 1.2.3. The Formation de Bugarach (BILOTTE, 1985) nites (0BRADOVICH, 1993; GRADSTEIN et a/., 1994). - La Formation de Bugarach (81LOTTE, 1985) 380 1.2.4. The Lower Terrigenous complex - Le complexe terrigene inferieur.......................... 380 1.2.5. The Marnes Bleues de Sougraigne (ToucAs, 1879) - Les Mames Bleues de Sougraigne 1. - REGION AL GEOLOGY (TOUCAS, 1879).................................................. 381 1.2.6. The Montagne des Cornes sequence - La serie de la Montagne des Comes (ROLLAND 1.1. Du RoouAND, 184 1) ......... ................................. 381 PREVIOUS WORK 2. - 810- AND CHRONOSTRATIGRAPHIC RESULTS R�SUTATS 810 ET CHRONOSTRATIGRAPHIQUES ........ 381 De GRossouvRE ( 1901) provided a review of early work . 2.1. Coniacian - Le Coniacien ......................................... 383 on the Cretaceous of the Corbieres (D' ARCHIAC , 1859; Tou­ 2.2. Santonian - Le Santonien .............. .......................... 383 CAS, 1879; RoussEL, 1893; ... ), and gave the first coherent 2.3. Chronostratigraphy - Chronostratigraphie ............... 386 synthesis of the stratigraphy and faunas of the region. He particularly drew attention to the significance of two groups : 3. - DEPOSITIONAL SEQUENCES - LES SEQUENCES DE ammonites and rudists (of which the former are revised D�POT .................. .................................. ... ..... 386 below), noting that the former showed affinities with those 3.1. The Bugarach sequence : Coniacian-Lower Santo­ of Aquitaine, Provence, the Austrian Alps, Westphalia and nian - La sequence de Bugarach : Coniacien-San- tonien inferieur........................ .......................... 386 Bohemia, proposing that, should the Coniacian and Santo­ nian be united into a single stage, the term Corbierien be 3.2. The Montagne des Cornes sequence : Santonian used. pro parte - La sequence de la Montagne des Comes: Santonien pro parte .................................. .. 386 The next significant contributions on the Coniacian and 4. - LOCATION 03 bpau19-2F SECTIONS- SITUATION DES Santonian of the Corbieres came with the work of SIONESSE (1937, 1956), COUPES ........................................ .. _ . ..................... 387 who provided meticulous details of faunal occurrences, and BA SE (1939) who described ammonites 5. - CONVENTIONS - CONVENTIONS .................................. .. 388 S collected by SIONESSE, complementing the work of de GRos­ 6. - SYSTEMATIC PALAEONTOLOGY (W.J. KENNEOY) - souvRE (1894). This was amplified by BILOTIE OLLI N N PAL�ONTOLOGIE SYST�MATIQUE (WJ. 388 & C G O KENNEDY)......... (1983) who documented further additions to the ammonite 7. - REFERENCES ......... 434 fauna. 1.2. LITHOSTRATIGRAPHY IN TRODUCTION Lithostratigraphic units of Coniacian and Santonian age The Coniacian and Santonian stages were introduced by outcrop widely on the southern flank of the Massif de CoouAND in 1857, and have type areas around Cognac and Mouthoumet, notably in the synclines of Rennes-Jes-Bains Saintes respectively in the northern part of the Aquitaine and Bugarach-Soulatge (Fig. 1 ), where the Calcaires de Basin of SW France. Subsequent workers [e.g. ARNAUD, Montferrand and Marno-calcaires a Gauthiericeras are 1877, 1883; de GROSSOUVRE, 1901; SIORONIE-VIVIEN, 1972 (with referred to the Coniacian, the Marnes a Micraster, Calcaires extensive bibliography); KENNEDY (1984a: Coniacian, 1987: du Petit Lac, the terrigenous and bioconstructional Mon­ Santonian); PLATEL, 1989] have discussed certain inadequa­ tagne des Cornes sequence and their lateral equivalent, the cies of the type sections and type areas of the two stages, Marnes Bleues de Sougraigne, to the Santonian (Fig. 2). in particular their unsuitability as boundary stratotypes, and Following the work of SIONESSE ( 1956), we place the Turo­ the absence or great rarity of key biostratigraphic markers, nian-Coniacian boundary below the Calcaires de Montfer­ notably ammonites. rand, within the Gres de la Sals, a variable sequence that Already in 1901 de GRossouvRE realised this inadequacy overlies the hippuritid limestones of the Turonian and their and drew attention to the rich ammonite faunas of the lateral equivalents. Corbieres, a region much better suited for the characteri­ The Santonian-Campanian boundary cannot be placed zation of the Santonian stage. New collections (M. Bilotte with any precision; Upper Santonian marls being succeeded & P. Melchior)
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  • Cretaceous Ammonites from the Lower Part of the Matanuska Formation Southern Alaska

    Cretaceous Ammonites from the Lower Part of the Matanuska Formation Southern Alaska

    Cretaceous Ammonites From the Lower Part of The Matanuska Formation Southern Alaska By DAVID L. JONES With a STRATIGRAPHIC SUMMARY By ARTHUR GRANT2 GEOLOGICAL SURVEY PROFESSIONAL PAPER 547 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1967 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director Library of Congress catalog-card No. GS 66-286 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price $1.25 (paper cover) CONTENTS Page Abstract-----------__-------------------------------- 1 Stratigraphic summary of the lower part of the Matanuska Introduction--------------------------------------- 1 Formation-Continued Mid-Cretaceous faunal sequence in southern Alaska- - - - .. 2 Unit B, sandstone of Cenomanian age-- _---------- 3 Unit C, strata of Cenomanian to Santonian(?) age--- Cenomanian - - - - - - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 Unit Gl, lutite of Cenomanian to Coniacian or Stratigraphic summary of the lower part of the Matanuska Santonian age-____----------------------- Formation, by Arthur Grants -------_______--------- Unit G2, composite sequence of Coniacian and Unit A, strata of Albian age ...................... Santonian(?) age .......................... Limestone Hills area- - ----____-------------- Regional correlation of the lower part of the Matanuska North front of the Chugach Mountains--- - - - - - Forrnation_____---------------------------------- Matanuska Valley---------_-____---------
  • Ammonite Faunal Dynamics Across Bio−Events During the Mid− and Late Cretaceous Along the Russian Pacific Coast

    Ammonite Faunal Dynamics Across Bio−Events During the Mid− and Late Cretaceous Along the Russian Pacific Coast

    Ammonite faunal dynamics across bio−events during the mid− and Late Cretaceous along the Russian Pacific coast ELENA A. JAGT−YAZYKOVA Jagt−Yazykova, E.A. 2012. Ammonite faunal dynamics across bio−events during the mid− and Late Cretaceous along the Russian Pacific coast. Acta Palaeontologica Polonica 57 (4): 737–748. The present paper focuses on the evolutionary dynamics of ammonites from sections along the Russian Pacific coast dur− ing the mid− and Late Cretaceous. Changes in ammonite diversity (i.e., disappearance [extinction or emigration], appear− ance [origination or immigration], and total number of species present) constitute the basis for the identification of the main bio−events. The regional diversity curve reflects all global mass extinctions, faunal turnovers, and radiations. In the case of the Pacific coastal regions, such bio−events (which are comparatively easily recognised and have been described in detail), rather than first or last appearance datums of index species, should be used for global correlation. This is because of the high degree of endemism and provinciality of Cretaceous macrofaunas from the Pacific region in general and of ammonites in particular. Key words: Ammonoidea, evolution, bio−events, Cretaceous, Far East Russia, Pacific. Elena A. Jagt−Yazykova [[email protected]], Zakład Paleobiologii, Katedra Biosystematyki, Uniwersytet Opolski, ul. Oleska 22, PL−45−052 Opole, Poland. Received 9 July 2011, accepted 6 March 2012, available online 8 March 2012. Copyright © 2012 E.A. Jagt−Yazykova. This is an open−access article distributed under the terms of the Creative Com− mons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
  • Bulletin of the British Museum (Natural History), Geology

    Bulletin of the British Museum (Natural History), Geology

    . Cretaceous faunas from Zululand and Natal, South Africa. The ammonite family Gaudryceratidae W. J. Kennedy_ Department of Geology and Mineralogy, University of Oxford, Parks Road, Oxford OX1 3PR H. C. Klinger South African Museum, P.O. Box 61, Cape Town 8000, Republic of South Africa Contents Synopsis 122 Introduction . 122 Location of specimens .......... 123 Field localities 1 23 Dimensions of specimens 123 Suture terminology . .. .. 123 Systematic palaeontology 123 Family Gaudryceratidae Spath 123 Genus Eogaudryceras Spath 123 Subgenus Eogaudryceras Spath 1 24 Eogaudryceras {Eogaudryceras) shimizui skoenbergense Collignon .. 124 Eogaudryceras {Eogaudryceras) hertleini (Wiedmann) . .. 125 Subgenus Eotetragonites Breistroffer 126 Eogaudryceras {Eotetragonites) raspaili raspaili Breistroffer ... 126 Eogaudryceras {Eotetragonites) umbilicostriatus Collignon .. 127 Genus Gaudryceras de Grossouvre . .. .. ... 128 Gaudryceras cf. varagurense Kossmat .. .. 129 Gaudryceras stefaninii Venzo . .. 130 Gaudryceras varicostatum van Hoepen . 133 Gaudryceras tenuiliratum Yabe .... .. 136 Gaudryceras denseplicatum (Jimbo) 140 1 ''Gaudryceras' sigcau van Hoepen . 142 'Gaudryceras' spp. .......... 142 Genus Anagaudryceras Shimizu . .. 142 Anagaudryceras buddha (Forbes) ... ... 146 Anagaudryceras subsacya (Marshall) .. ... 152 Anagaudryceras politissimum (Kossmat) . ... .. 154 Anagaudryceras subtilineatum (Kossmat) .. .. 155 Anagaudryceras pulchrum (Crick) 157 Genus Vertebrites Marshall 159 Vertebrites kayei (Forbes) ..... 160 Genus Zelandites Marshall
  • Palaeontology of the Middle Turonian Limestones of the Nysa Kłodzka Graben

    Palaeontology of the Middle Turonian Limestones of the Nysa Kłodzka Graben

    Palaeontology of the Middle Turonian limestones of the Nysa Kłodzka Graben... Geologos 18, 2 (2012): 83–109 doi: 10.2478/v10118-012-0007-z Palaeontology of the Middle Turonian limestones of the Nysa Kłodzka Graben (Sudetes, SW Poland): biostratigraphical and palaeogeographical implications Alina Chrząstek Institute of the Geological Sciences, Wrocław University, Maksa Borna 9, PL 50-204 Wrocław, Poland; e-mail: [email protected] Abstract The ammonites Lewesiceras peramplum Mantell and ?Lewesiceras sp. are reported from the Upper Cretaceous in the Nysa Kłodzka Graben; they date from the Middle Turonian and ?Coniacian, respectively. The Middle Turonian lime- stones of the Stara Bystrzyca quarry contain an abundant assemblage of inoceramids (Inoceramus cuvieri Sowerby and I. lamarcki Parkinson) and other bivalves, including oysters, as well as brachiopods and trace fossils. Micropalaeonto- logical data show the presence of foraminifers and siliceous sponge spiculae, bryozoans, ostracods and fragments of bivalves and gastropods. The Middle Turonian calcareous deposits belongs to the upper part of the Inoceramus lamarcki Zone (late Middle Turonian) and were deposited on a shallow, subtidal offshore shelf. They overlie the Middle Turo- nian Bystrzyca and Długopole Sandstones, which represent foreshore-shoreface delta deposits. The fossil assemblage suggests a moderate- to low-energy, normal-salinity environment with occasionally an oxygen deficit. Keywords: Middle Turonian, Sudetes, Nysa Kłodzka Graben, ammonites, inoceramids, biostratigraphy 1. Introduction Stara Bystrzyca quarry. It is, with its diameter of approx. 45 cm, probably the biggest ammo- Representatives of the ammonite genus nite ever found in Nysa Kłodzka Graben and Lewesiceras are most typical of the Middle-Late probably also in the Sudety Mountains (Fig.