DOCSLIB.ORG

Upper Albian, Cenomanian and Upper Turonian Ammonite Faunas from the Fahdène Formation of Central Tunisia and Correlatives in Northern Algeria

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Upper Albian, Cenomanian and Upper Turonian Ammonite Faunas from the Fahdène Formation of Central Tunisia and Correlatives in Northern Algeria Acta Geologica Polonica, Vol. 70 (2020), No. 2, pp. 147–272 DOI: 10.24425/agp.2019.126459 Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria WILLIAM JAMES KENNEDY Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW and Department of Earth Sciences, South Parks Road, Oxford OX1 3AN, United Kingdom. E-mail: [email protected] ABSTRACT: Kennedy, W.J. 2020. Upper Albian, Cenomanian and Upper Turonian ammonite faunas from the Fahdène Formation of Central Tunisia and correlatives in northern Algeria. Acta Geologica Polonica, 70 (2), 147–272. Warszawa. Over 130 species are documented from the Upper Albian, Cenomanian and Upper Turonian Fahdène Formation and correlatives in Central Tunisia and northern Algeria, based on material described by Henri Coquand (1852, 1854, 1862, 1880), Léon Pervinquière (1907, 1910), Georges Dubourdieu (1953), Jacques Sornay (1955), and new collections. The material consists predominantly of limonitic nuclei, together with adults of micromorphs. There is no continuous record, and a series of faunas are recognised that can be correlated with the zonation developed in Western Europe. These are the Upper Albian Ostlingoceras puzosianum fauna, Lower Cenomanian Neostlingoceras carcitanense and Mariella (Mariella) harchaensis faunas, the upper Lower to lower Middle Cenomanian Turrilites scheuchzerianus fauna, Middle Cenomanian Calycoceras (Newboldiceras) asiaticum fauna, Upper Cenomanian Eucalycoceras pentagonum fauna, and the Upper Turonian Subprionocyclus neptuni fauna. Two new micromorph genera are described, Coquandiceras of the Mantelliceratinae and Cryptoturrilites of the Turrilitinae. Most of the taxa present have a cosmopolitan distribution, with a minority of Boreal, North American and endemic taxa. Key words: Ammonites; Cretaceous; Albian; Cenomanian; Turonian; Algeria; Tunisia. INTRODUCTION wheel base Land Rover, and drive to northern Algeria and Central Tunisia (via Marseille and Algiers) to in- The origins of this contribution go back more vestigate the classic localities of Coquand (1852, 1854, than fifty years. It began in the spring of 1959 at the 1862, 1880), Péron (1866, 1883, 1896–1897), Thomas Colloque sur le Crétacé Supérieur Française, when and Péron (1889–1893) and Pervinquière (1903, 1907, the late Jake Hancock (1928–2004) and the late Jost 1910), together with those in the Monts du Mellègue Wiedmann (1931–1993) disputed on the affinities of (Dubourdieu 1953, 1956; Dubourdieu and Sigal the nuclei assigned to Submantelliceras Spath, 1923: 1949; Sornay 1955) that straddle the Algeria/Tunisia were they the nuclei of Mantelliceras Hyatt, 1903, or boundary. Our first visit to Algeria and Tunisia took Graysonites Young, 1958 (Basse de Menorval 1960, place between March 31st and April 22nd 1965. The p. 807)? In order to investigate the subject, Hancock trip was not without incident not least of which was (at that time my doctoral thesis supervisor) applied my rolling over the Land Rover in northern France. for and was awarded a grant from the then Natural We persisted, however, and arrived in Algiers. A visit Environment Research Council to purchase a long- to the British Consulate to seek advice on logistics 148 WILLIAM JAMES KENNEDY led to firm advice to return to the United Kingdom mens refigured in Kennedy and Wright (1981, 1984a, forthwith. We persisted, and carried out fieldwork in b), Wright and Kennedy (1978, 1979, 1996, 2015) and the area between Berrouaghia and Sour El-Ghozlane Kennedy et al. (2005). The Coquand Collection was (formerly known as Aumale: Péron 1866), made clas- subsequently returned to Budapest and is currently sic by Pervinquière (1910) on the basis of material housed in the Geological Museum of Hungary accord- collected by Phillipe Thomas, Alphonse Péron, and ing to Szives and Company (2011), but not all of the others, with slight results. Continuing to the Monts material I examined in 1985 has been traced. du Mellège, we left Algeria to discover that the bor- Mid-Cretaceous ammonites from Central Tunisia der zone, including some of Dubourdieu’s localities, were described and figured by Pervinquière (1907), was a sort of no man’s land several kilometres wide, and his material deposited in the Sorbonne Collections, bounded by barbed wire and minefields, set up during thereafter transferred to the basement store below the the Algerian War of Independence (1954–1962). Key Université Pierre et Marie Curie (Paris VI), where I outcrops were unvegetated, and strewn with tiny li- first studied it in the 1980’s. The specimens are now in monitic fossils. In contrast, when revisited in 1984, the collections of the Laboratoire de Paléontologie of many of these outcrops were under cultivation, and the Muséum national d’Histoire Naturelle, immacu- fossil collecting no longer possible. lately documented and illustrated in the Muséum’s on- It had been Jake Hancock’s intention to describe line catalogues. The larger specimens, from limestone these faunas in his retirement. He handed them over sequences, and some of the tiny limonitic specimens to me shortly before his death in 2004, but only now, were described and figured by Kennedy and Wright more than 50 years after our original collecting, are (1981, 1984a, b), Wright and Kennedy (1984, 1994, they described. In what follows, details of localities 1995, 1996), Kennedy (2004), and Kennedy and Gale and outcrops are based on Hancock’s field notebooks; (2015). Material from the Monts du Mellègue was de- his annotated field maps are, sadly, lost; my contribu- scribed by Dubourdieu and Sigal (1949), Dubourdieu tion was to collect the fossils. And the solution to the (1953), and Sornay (1955). Originally deposited in the disagreement between Hancock and Wiedmann? Both Collections of the Collège de France, much of the were correct to a degree. Some of the limonitic nuclei described material is lost (letter from Jacques Sigal, are Mantelliceras; some are Graysonites, but the type circa 1985). The Lower Albian material, now housed species of Submantelliceras is a paedomorphic dwarf. in the collections of the Université Claude Bernard Lyon I, was revised by Kennedy and Klinger (2008a) and Latil (2011); material described by Sornay (1955) PREVIOUS WORK is housed in the same institution. Material from areas in Central Tunisia outside Limonitic ammonite nuclei of Cretaceous ammo- those covered by the present contribution is described nites from north-eastern Algeria were described by in Robaszynski et al. (1993, 1994, 2004, 2008). Henri Coquand in a series of publications (Coquand 1852, 1854, 1862, 1880). Many species were described, but few were figured. This was partially remedied by LITHO- AND BIOSTRATIGRAPHY Charles Heinz, who, in 1886, produced five photo- graphic plates of fossils described by Coquand. The The present collections mainly come from iso- subsequent history of Coquand’s collections is dis- lated outcrops of the Fahdène Formation of Burrolet cussed by Szives and Company (2011). They were pur- (1956) and correlatives in Central Tunisia and adja- chased, on Coquand’s death, by Count Andor Semsey cent parts of north-eastern Algeria (Text-figs 1, 2); in 1882, and presented to the Hungarian Geological the reader is referred to the reviews of previous work Institute. Some of these specimens were described and in Robaszynski et al. (1994), Touir et al. (2005), con- figured by Pervinquière (1910), who stated them as be- tributions in Arnaud-Vanneau and Zghal (2005), and ing in the ‘Musée de Budapesth’. I first studied this ma- Latil (2011). The key references for localities in the terial in the summer of 1965, when it was housed in the Monts du Mellègue (the source of many of the fossils Geological Institute, Nepstadion Korut, Budapest. By described below) are the works of Dubourdieu (1953, the time of a second visit in 1985, the material had been 1956; in Sornay 1955). transferred to a field station at Sümeg, where I was able A discontinuous sequence of faunas is assigned to to describe and photograph most of Coquand’s speci- the zonal and subzonal sequence developed in Western mens that were described and figured by Pervinquière Europe (Text-fig. 3; Kennedy and Gale in Wright in 1910. Some of this work was published and speci- and Kennedy 2017). The ill-defined Arrhaphoceras MID-CRETACEOUS AMMONITES, NE ALGERIA AND CENTRAL TUNISIA 149 Text-fig. 1. Locality map, northern Algeria and Central Tunisia. The classic faunas from Algeria described by Pervinquière (1910), collected by Phillipe Thomas, Alphonse Peron and others came from between Berrouaghia and Aumale in Algeria, the latter now known as Sour El- Ghozlane. The Monts de Mellègue, source of much of the material described herein, lies in western central Tunisia and adjacent parts of Algeria to the west of Tadjerouine (Text-fig. 2) Text-fig. 2. Locality map, eastern Central Tunisia and adjacent parts of north-eastern Algeria 150 WILLIAM JAMES KENNEDY SUBSTAGE ZONE, WESTERN EUROPE FAUNA, PRESENT STUDY Neocardioceras juddii UPPER CENOMANIAN Metoicoceras geslinianum Calycoceras (P.) guerangeri pentagonum Acanthoceras jukesbrownei asiaticum MIDDLE CENOMANIAN Acanthoceras rhotomagense Cunningtoniceras inerme scheuchzerianus Mantelliceras dixoni LOWER CENOMANIAN Mantelliceras mantelli carcitanenseand harchaensis Pleurohoplites briacensis UPPER () ALBIAN Pervinquiera S. perinflata puzosianum (part) Pervinquiera ()S. rostrata Text-fig. 3. Ammonite faunas recognized
Load more

Recommended publications
  • Handbook of Texas Cretaceous Fossils
    University of Texas Bulletin No. 2838: October 8, 1928 HANDBOOK OF TEXAS CRETACEOUS FOSSILS B y W. S. ADKINS Bureau of Economic Geology J. A. Udden, Director E. H. Sellards, Associate Director PUBLISHED BY THE UNIVERSITY FOUR TIMES A MONTH, AND ENTERED AS SECOND-CLASS MATTER AT THE POSTOFFICE AT AUSTIN, TEXAS. UNDER THE ACT OF AUGUST 24. 1912 The benefits of education and of useful knowledge, generally diffused through a community, are essential to the preservation of a free govern­ m en t. Sam Houston Cultivated mind is the guardian genius of democracy. It is the only dictator that freemen acknowl­ edge and the only security that free­ men desire. Mirabeau В. Lamar CONTENTS P age Introduction __________________________________________________ 5 Summary of Formation Nomenclature_______________________ 6 Zone Markers and Correlation_______________________________ 8 Types of Texas Cretaceous Fossils___________________________ 36 Bibliography ________________________________________________ 39 L ist and Description of Species_________________________________ 46 P lants ______________________________________________________ 46 Thallophytes ______________________________________________ 46 Fungi __________________________________________________ 46 Algae __________________________________________________ 47 Pteridophytes ____________________________________________ 47 Filices __________________________________________________ 47 Spermatophytes __________________________________________ 47 Gymnospermae _________________________________________
    [Show full text]
  • Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas
    Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas GEOLOGICAL SURVEY PROFESSIONAL PAPER 1253 Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas By WILLIAM A. COBBAN and E. A. MEREWETHER Molluscan Fossil Record from the Northeastern Part of the Upper Cretaceous Seaway, Western Interior By WILLIAM A. COBBAN Lower Upper Cretaceous Strata in Minnesota and Adjacent Areas-Time-Stratigraphic Correlations. and Structural Attitudes By E. A. M EREWETHER GEOLOGICAL SURVEY PROFESSIONAL PAPER 1 2 53 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1983 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress Cataloging in Publication Data Cobban, William Aubrey, 1916 Stratigraphy and paleontology of mid-Cretaceous rocks in Minnesota and contiguous areas. (Geological Survey Professional Paper 1253) Bibliography: 52 p. Supt. of Docs. no.: I 19.16 A. Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, Western Interior by William A. Cobban. B. Lower Upper Cretaceous strata in Minnesota and adjacent areas-time-stratigraphic correlations and structural attitudes by E. A. Merewether. I. Mollusks, Fossil-Middle West. 2. Geology, Stratigraphic-Cretaceous. 3. Geology-Middle West. 4. Paleontology-Cretaceous. 5. Paleontology-Middle West. I. Merewether, E. A. (Edward Allen), 1930. II. Title. III. Series. QE687.C6 551.7'7'09776 81--607803 AACR2 For sale by the Distribution Branch, U.S.
    [Show full text]
  • A New Species of Gaudryceras (Ammonoidea, Gaudryceratidae) from the Lowest Maastrichtian of Hokkaido, Japan and Its Biostratigraphic Implications
    Paleontological Research, vol. 17, no. 1, pp. 47–57, April 1, 2013 © by the Palaeontological Society of Japan doi:10.2517/1342-8144-17.1.47 A new species of Gaudryceras (Ammonoidea, Gaudryceratidae) from the lowest Maastrichtian of Hokkaido, Japan and its biostratigraphic implications 1 2 YASUNARI SHIGETA AND TOMOHIRO NISHIMURA 1Department of Geology and Paleontology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan (e-mail: [email protected]) 2Hobetsu Museum, 80-6, Hobetsu, Mukawa, Hokkaido 054-0211, Japan Received May 11, 2012; Revised manuscript accepted August 12, 2012 Abstract. Gaudryceras hobetsense sp. nov. is described from the Nostoceras hetonaiense Zone (= lowest Maastrichtian) of the Hobetsu area, south-central Hokkaido, Northern Japan. Its shell is characterized by fine lirae on early whorls, distant rounded or flat-topped, narrow band-like ribs on middle and later whorls, and frequent collar-like ribs on later whorls. The occurrence of this new species strongly suggests the presence of lowest Maastrichtian strata in southern Alaska, and sheds light on the age delineation of the chronologically poorly defined beds in northern and eastern Hokkaido. Key words: ammonoid, Cretaceous, Gaudryceras, Hobetsu, Hokkaido, Maastrichtian Introduction age (Shigeta et al., 2012). Because of the successive occurrence of several species and their restricted strati- The genus Gaudryceras de Grossouvre, 1894 is char- graphic ranges, Gaudryceras is an ideal ammonoid for acterized by an evolute shell with a wide, shallow umbi- precise biostratigraphic correlation of Maastrichtian licus, rounded venter and various ribbing styles. strata in the North Pacific realm. Although species of the genus ranging in age from late The biostratigraphic zonation scheme established for Albian to Maastrichtian are known worldwide (Kennedy the lowest Maastrichtian of Japan is based mainly on and Klinger, 1979; Hoffmann, 2010), their typical occur- ammonoids and inoceramid bivalves from the Hakobuchi rence is in the Tethyan and Indo-Pacific realms.
    [Show full text]
  • Vol. 3 No.3 September 1999
    ISSN 1342-8144 Formerly Transactions and Proceedings of the Palaeontological Society of Japan Vol. 3 No.3 September 1999 The Palaeontological Society of Japan Co-Editors Kazushige Tanabe and Tomoki Kase Language Editor Martin Janal (New York, USA) Associate Editors Jan Bergstrom (Swedish Museum of Natural History, Stockholm, Sweden), Alan G. Beu (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand), Satoru Chiba (Tohoku University, Sendai, Japan), Yoichi Ezaki (Osaka City University, Osaka, Japan), James C. Ingle, Jr. (Stanford University, Stanford, USA), Kunio Kaiho (Tohoku University, Sendai, Japan), Susan M. Kidwell (University of Chicago, Chicago, USA), Hiroshi Kitazato (Shizuoka University, Shizuoka, Japan), Naoki Kohno (National Science Museum, Tokyo, Japan), Neil H. Landman (Amemican Museum of Natural History, New York, USA), Haruyoshi Maeda (Kyoto University, Kyoto, Japan), Atsushi Matsuoka (Niigata University, Niigata, Japan), Rihito Morita (Natural History Museum and Institute, Chiba, Japan), Harufumi Nishida (Chuo University, Tokyo, Japan), Kenshiro Ogasawara (University of Tsukuba, Tsukuba, Japan), Tatsuo Oji (University of Tokyo, Tokyo, Japan), Andrew B. Smith (Natural History Museum, London, Great Britain), Roger D.K. Thomas (Franklin and Marshall College, Lancaster, USA), Katsumi Ueno (Fukuoka University, Fukuoka, Japan), Wang Hongzhen (China University of Geosciences, Beijing, China), Yang Seong Young (Kyungpook National University, Taegu, Korea) Officers for 1999-2000 President: Kei Mori Councillors:
    [Show full text]
  • Le Mans, France
    High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France) Delphine Desmares, Marc Testé, Bérengère Broche, Maxime Tremblin, Silvia Gardin, Loïc Villier, Edwige Masure, Danièle Grosheny, Nicolas Morel, Patrice Raboeuf To cite this version: Delphine Desmares, Marc Testé, Bérengère Broche, Maxime Tremblin, Silvia Gardin, et al.. High- resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France). Cretaceous Research, Elsevier, 2020, 10.1016/j.cretres.2019.104198. hal-02328773 HAL Id: hal-02328773 https://hal.archives-ouvertes.fr/hal-02328773 Submitted on 23 Oct 2019 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. Journal Pre-proof High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France) Delphine Desmares, Marc Testé, Bérengère Broche, Maxime Tremblin, Silvia Gardin, Loïc Villier, Edwige Masure, Danièle Grosheny, Nicolas Morel, Patrice Raboeuf PII: S0195-6671(19)30086-2 DOI: https://doi.org/10.1016/j.cretres.2019.104198 Reference: YCRES 104198 To appear in: Cretaceous Research Received Date: 1 March 2019 Revised Date: 12 July 2019 Accepted Date: 31 July 2019 Please cite this article as: Desmares, D., Testé, M., Broche, B., Tremblin, M., Gardin, S., Villier, L., Masure, E., Grosheny, D., Morel, N., Raboeuf, P., High-resolution biostratigraphy and chemostratigraphy of the Cenomanian stratotype area (Le Mans, France), Cretaceous Research, https:// doi.org/10.1016/j.cretres.2019.104198.
    [Show full text]
  • 71St Annual Meeting Society of Vertebrate Paleontology Paris Las Vegas Las Vegas, Nevada, USA November 2 – 5, 2011 SESSION CONCURRENT SESSION CONCURRENT
    ISSN 1937-2809 online Journal of Supplement to the November 2011 Vertebrate Paleontology Vertebrate Society of Vertebrate Paleontology Society of Vertebrate 71st Annual Meeting Paleontology Society of Vertebrate Las Vegas Paris Nevada, USA Las Vegas, November 2 – 5, 2011 Program and Abstracts Society of Vertebrate Paleontology 71st Annual Meeting Program and Abstracts COMMITTEE MEETING ROOM POSTER SESSION/ CONCURRENT CONCURRENT SESSION EXHIBITS SESSION COMMITTEE MEETING ROOMS AUCTION EVENT REGISTRATION, CONCURRENT MERCHANDISE SESSION LOUNGE, EDUCATION & OUTREACH SPEAKER READY COMMITTEE MEETING POSTER SESSION ROOM ROOM SOCIETY OF VERTEBRATE PALEONTOLOGY ABSTRACTS OF PAPERS SEVENTY-FIRST ANNUAL MEETING PARIS LAS VEGAS HOTEL LAS VEGAS, NV, USA NOVEMBER 2–5, 2011 HOST COMMITTEE Stephen Rowland, Co-Chair; Aubrey Bonde, Co-Chair; Joshua Bonde; David Elliott; Lee Hall; Jerry Harris; Andrew Milner; Eric Roberts EXECUTIVE COMMITTEE Philip Currie, President; Blaire Van Valkenburgh, Past President; Catherine Forster, Vice President; Christopher Bell, Secretary; Ted Vlamis, Treasurer; Julia Clarke, Member at Large; Kristina Curry Rogers, Member at Large; Lars Werdelin, Member at Large SYMPOSIUM CONVENORS Roger B.J. Benson, Richard J. Butler, Nadia B. Fröbisch, Hans C.E. Larsson, Mark A. Loewen, Philip D. Mannion, Jim I. Mead, Eric M. Roberts, Scott D. Sampson, Eric D. Scott, Kathleen Springer PROGRAM COMMITTEE Jonathan Bloch, Co-Chair; Anjali Goswami, Co-Chair; Jason Anderson; Paul Barrett; Brian Beatty; Kerin Claeson; Kristina Curry Rogers; Ted Daeschler; David Evans; David Fox; Nadia B. Fröbisch; Christian Kammerer; Johannes Müller; Emily Rayfield; William Sanders; Bruce Shockey; Mary Silcox; Michelle Stocker; Rebecca Terry November 2011—PROGRAM AND ABSTRACTS 1 Members and Friends of the Society of Vertebrate Paleontology, The Host Committee cordially welcomes you to the 71st Annual Meeting of the Society of Vertebrate Paleontology in Las Vegas.
    [Show full text]
  • Towards a Phylogenetic Classification of the Cretaceous Ammonites V
    N.Jb. Geo\. Palaont. Abh. Stuttgart, Januar 1997 Towards a phylogenetic classification of the Cretaceous ammonites V. Euomphaloceratidae By M. R. Cooper, Durban With 5 figures in the text COOPER, M. R. (1997): Towards a phylogenetic classification of the Cretaceous ammo­ nites. V. Euomphaloceratidae. - N. Jb. Geo\. Palaont., Abh., 203: 1-21; Stuttgart. Abstract: Phylogenetic analysis of Euomphaloceratinae COOPER, 1978, a group within highly diversified and heterogeneous Acanthocerataceae, indicates a fundamental dichotomy which suggests promotion of this taxon to family rank with recognition of two subfamilies. Nominate Euomphaloceratinae comprise E. (Euomphaloceras), E. (Kanabiceras), Burroceras, Paraburroceras, P. (Pseudaspidoceras), P. (Ampakabites), and Morrowites, and Romaniceratinae subfam. nov. is made up of Schindewo/fites, Kameruno­ ceras, Codazziceras, Proromaniceras (Proromaniceras), P. (Obiraceras), Neomphaloceras, Yubariceras and Romaniceras (?with Shuparoceras as a subgenus). Zusammenfassung: Die phylogenetische Analyse der Euomphaloceratinae COOPER, 1978, einer Gruppe der hoch diversifizierten und heterogenen Acanthocerataceae, weist auf eine fundamentale Dichotomie innerhalb der Unterfamilie hin. Der Gruppe wird daher Familienrang verliehen und zwei Unterfamilien abgegrenzt. Die Nominat-Unter­ familie Euomphaloceratinae umfaBt E. (Euomphaloceras), E. (Kanabiceras), Burroceras, Paraburroceras, P. (Pseudaspidoceras), P. (Ampakabites) und Morrowites. Zur zweiten Unterfamilie Romaniceratinae subfam. nov. gehiiren Schindewo/fites,
    [Show full text]
  • Quelques Ammonites Du Cénomanien-Turonien De La Région D9errachidia- Boudnid-Erfoud (Partie Méridionale Du Haut Atlas Central, Maroc)
    Re~ciePaléobiol., Gefièie(décembre 2002) 21 (2): 759-779 ISSN 0253-6730 Quelques ammonites du Cénomanien-Turonien de la région d9Errachidia- Boudnid-Erfoud (partie méridionale du Haut Atlas Central, Maroc) Christian MEISTERI & Mohamed RHALM12 Résumé Neo1ohire.s vihrayea~iu.\br<incai ECK, Neolobites vibrayraiius (d30RBIGNY)S.S., Coilopoceras gr. req~iirnianuin(d'ORBIGNY) et Coilnpocerar aff newelli BENAVIDES-CACERES ont été recoltés dans Ic bassin d'Errachidia-Boudnib-Erfoud sur le versant sud du Haut Atlas central marocain. Ces ammonites correspondent à un intcrvallc dc temps allant de la base du Cénomanien supérieur jusqu'au Turonicn supérieur et elle sont replacées dans leur contexte pal6og6ographique régional et dans un cadre plus global à I'échcllc dc la Téthys et de l'Atlantique. Elles se rattachent sans ambiguité au domaine téthysien (circum-méditerranéen)même si des influences atlantiques ne sont pas a exclure. Mots-clés Ammonites. Crétacé, Cénomanien-Turonien, Biostratigraphie, Taxonomie, Maroc. Ahstract Some ammonites of the Cenomanian-Turonian from Errachidia-Boudnid-Erfoud (southern part of Moroccan Central High Atlas).. Nrolobites i,ibravennus brancai ECK. Neolobites vibraveanus (d'ORBIGNYI S.S. Coiloooceras ber. reauienianirm (d'ORBIGNY) and Coilopoceras aff. iiewelli BENAVIDES-CACERES bave been collected in the Errachidia-Boudnib-Erfoud basin on the southem side of the Moroccan Central High Atlas. The range of these ammonites includes the lower part of the Upper Cenomanian up to thc Uppcr Turonian. They are placed in their paleogeographical context. They have Tethyan (circum Mediterranean) affinities even if some Atlantic influences cannot he exclude. Key Words Ammonites. Cretaceous, Cenomanian-Turonian,Bio~tratigraph~, Taxonomy, Morocco INTRODUCTION nord par l'Accident Sud-Atlasique et au sud par la Hammada du Guir, formant une étendue de 70 km de De nouvelles récoltes de céphalopodes dans les assises largeur et de 300 km de longueur (Fig.
    [Show full text]
  • Phylogeny, Diversity, and Ecology of the Ammonoid Superfamily Acanthoceratoidea Through the Cenomanian and Turonian
    PHYLOGENY, DIVERSITY, AND ECOLOGY OF THE AMMONOID SUPERFAMILY ACANTHOCERATOIDEA THROUGH THE CENOMANIAN AND TURONIAN DAVID A.A. MERTZ A Thesis Submitted to the Graduate College of Bowling Green State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2017 Committee: Margaret Yacobucci, Advisor Andrew Gregory Keith Mann © 2017 David Mertz All Rights Reserved iii ABSTRACT Margaret Yacobucci Both increased extinction and decreased origination, caused by rising oceanic anoxia and decreased provincialism, respectively, have been proposed as the cause of the Cenomanian Turonian (C/T) extinction event for ammonoids. Conflicting evidence exists for whether diversity actually dropped across the C/T. This study used the ammonoid superfamily Acanthoceratoidea as a proxy for ammonoids as a whole, particularly focusing on genera found in the Western Interior Seaway (WIS) of North America, including Texas. Ultimately, this study set out to determine 1) whether standing diversity decreased across the C/T boundary in the WIS, 2) whether decreased speciation or increased extinction in ammonoids led to a drop in diversity in the C/T extinction event, 3) how ecology of acanthoceratoid genera changed in relation to the C/T extinction event, and 4) whether these ecological changes indicate rising anoxia as the cause of the extinction. In answering these questions, three phylogenetic analyses were run that recovered the families Acanthoceratidae, Collignoniceratidae, and Vascoceratidae. Pseudotissotiidae was not recovered at all, while Coilopoceratidae was recovered but reclassified as a subfamily of Vascoceratidae. Seven genera were reclassified into new families and one genus into a new subfamily. After calibrating the trees with stratigraphy, I was able to determine that standing diversity dropped modestly across the C/T boundary and the Early/Middle Turonian boundary.
    [Show full text]
  • CHAPTER I I I Sistematic DESCRIPTION
    CHAPTER III SiSTEMATIC DESCRIPTION CIUPTER III systematic description Section I : Mortonlceratinae Introduction : The ammonoid species described by Stoliczka under the group of Ammonites crlstatl were sub­ divided by him into species 1, Ammonites blanfordianus, 2, Ammonites inflatus, condollianus. ootatoorensis and corruptus, 3, Amnionites propinquus. 4. Ammonites obesus, 5. Ammonites se rratocarlnatus. 6, Ammonite s subtricarinatus. These were transferred by later workers e.g. Kossmat to Schloenbachia and its subgenera as : Schloenbachla (Tropitoldes) . S. (Prlnotropis) . S. (Peroniceras). S, (Munerlceras) etc. According to present ideas the above mentioned species have undergone further transfers and except those of the Inflata group, are placed under different subfamilies, viz. Peroniceratlnae, Mune rice rat inae, etc. These species are, therefore, not considered under the present section; but those of the Inflata group which are now found to belong to the sub­ family Mortonlceratinae are dealt with here. The species which represent this subfamily in the present collection, viz. Mortoniceras (Mortoniceras) inflatum (Sow.); M. (M.) rostratum (Sow.), Mortonioeras (Peiradoceras) indicum spo nov., M. (Purnovarites) perinflatum Spath., M. (p.) - 17 - - 18 - subquadratum Spath, M. (d .) sp. Indet; ?Mortonicera8 (?Mortoniceras) deshpandel sp, nov., Prohysteroceras (Goodhallltes) stoliczkal sp. nov. are dealt with here., Of these eight species Mortonlceras (Mortonlceras) inflatum was described by Stoliczka and Kossmat from these rocks. Three species viz. Mortoniceras (M.) rostratum (Sow.), M. (Durnovarites) perlnflatum Spath., M. (D .) subquadratum Spath. are species already known and are recorded from outside South Indian basin; they are now recorded here for the first time. The remaining species described here are new to science. The subfamily Mortoniceratinae has an interesting history, being used in the first instance by Spath (1925) to comprise species of texanum group of Senonian.
    [Show full text]
  • Albian Ammonites from Northern Pakistan
    DE DE GRUYTER Acta Geologica Polonica, Vol. 64 (2014), No. 1, pp. 47–98 OPEN DOI: 10.2478/agp-2014-0003 G Albian ammonites from northern Pakistan WILLIAM JAMES KENNEDY1 AND ALI N. FATMI2 1Oxford University Museum of Natural History, Parks Road, Oxford OX1 3W and Department of Earth Sciences, Parks Road, Oxford OX1 3AN, United Kingdom. E-mail: [email protected] 2Formerly of the Geological Survey of Pakistan, Quetta, Pakistan (Dr Fatmi died on 27 March 2012) ABSTRACT: Kennedy, W.J. and Fatmi, A.N. 2014. Albian ammonites from northern Pakistan. Acta Geologica Polonica, 64 (1), 47–98. Warszawa. The occurrence of rich Albian ammonite faunas in what is now northern Pakistan has been known for more than 80 years, but there has been no comprehensive account of the assemblages present. A total of 36 taxa are described below. The middle part of the Lumshiwal Formation yields Upper Aptian ammonites south of the Samana Range. Elsewhere, it yields Douvilleiceras leightonense Casey, 1962, of the lower Lower Albian Leymeriella reg- ularis Zone and the Sonneratia perinflata and S. kitchini Subzones of the Sonneratia chalensis Zone of the north- west European sequence. The top one to two metres of the Lumshiwal yields an abundant fauna of rolled and phos- phatised ammonites that includes elements from much of the Albian. Of these, Prolyelliceras gevreyi (Jacob, 1907) first appears in the lower Lower Albian Leymeriella tardefurcata Zone. The commonest ammonite is Douville- iceras mammillatum (Schlotheim, 1813) sensu lato, which ranges from the perinflata Subzone of the chalensis Zone to the Otohoplites bulliensis Subzone of the O.
    [Show full text]
  • Palaeontology and Biostratigraphy of the Lower Cretaceous Qihulin
    Dissertation Submitted to the Combined Faculties for the Natural Sciences and for Mathematics of the Ruperto-Carola University of Heidelberg, Germany for the degree of Doctor of Natural Sciences presented by Master of Science: Gang Li Born in: Heilongjiang, China Oral examination: 30 November 2001 Gedruckt mit Unterstützung des Deutschen Akademischen Austauschdienstes (Printed with the support of German Academic Exchange Service) Palaeontology and biostratigraphy of the Lower Cretaceous Qihulin Formation in eastern Heilongjiang, northeastern China Referees: Prof. Dr. Peter Bengtson Prof. Pei-ji Chen This manuscript is produced only for examination as a doctoral dissertation and is not intended as a permanent scientific record. It is therefore not a publication in the sense of the International Code of Zoological Nomenclature. Abstract The purpose of the study was to provide conclusive evidence for a chronostratigraphical assignment of the Qihulin Formation of the Longzhaogou Group exposed in Mishan and Hulin counties of eastern Heilongjiang, northeastern China. To develop an integrated view of the formation, all collected fossil groups, i.e. the macrofossils (ammonites and bivalves) and microfossils (agglutinated foraminifers and radiolarians) have been studied. The low-diversity ammonite fauna consists of Pseudohaploceras Hyatt, 1900, and Eogaudryceras Spath, 1927, which indicate a Barremian–Aptian age. The bivalve fauna consists of eight genera and 16 species. The occurrence of Thracia rotundata (J. de C: Sowerby) suggests an Aptian age. The agglutinated foraminifers comprise ten genera and 16 species, including common Lower Cretaceous species such as Ammodiscus rotalarius Loeblich & Tappan, 1949, Cribrostomoides? nonioninoides (Reuss, 1836), Haplophragmoides concavus (Chapman, 1892), Trochommina depressa Lozo, 1944. The radiolarians comprise ten genera and 17 species, where Novixitus sp., Xitus cf.
    [Show full text]