8 International Symposium Cephalopods
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Colonial Geology and Mineral Resources
COLONIAL GEOLOGY AND MINERAL RESOURCES VOLUME 4, NUMBER 3 LONDON: HER MAJESTY'S STATIONERY OFFIC 1954 P R I r. E 7.r fitl N F. T SOME NEW UPPER CRETACEOUS AMMONITES FROM NIGERIA1 By R. A. REYMENT, B.Sc. Geological Survey Department, Nigeria Abstract THREE NEW AMMONITE GENERA AND A NUMBER OF AMMONITE SPECIES ARE DESCRIBED from the Turonian and Coniacian of Nigeria. The new genera are Onitshoce,.as of Desmoceratidae, Kamerunoceras of Collignoniceratidae and Ezilloella of Vasco ceratidae. Some new species of Pseudaspidoceras Hyatt, Gombeoceras Reyment, Pachyvascoce,.as Furon and Solgerites Reeside are recorded. A discussion of the family Vascoceratidae appears. · Introduction IN A RECENT PAPER (Reyment, 1954) some new genera of Lower Turonian ammonites from Nigeria were established and their types and a few other species briefly described. The present paper contains descriptions of two further species of one of these new genera and of species of associated genera that have a wide distribution in both southern and northern Nigeria. Three new genera from the Turonian and Coniacian of southern Nigeria and the Cameroons are treated. This paper also includes a brief discussion of the family Vascoceratidae which provides an important element of the Lower Turonian faunas of many areas in Africa, Europe, Asia and North and South America. Both this and the previous work are preliminary to a larger review of the Upper Cretaceous-ammonites of southern Nigeria that is in active preparation;· but whose publication will in,evitably be delayed. Mean while, it is hoped that the new gehera described below and the informa tion on taxonomy and phylogeny becoming a\7ailable from studies of the Nigerian faunas will be of value both to palaeontologists and strati graphers. -
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. -
Post-Carboniferous Stratigraphy, Northeastern Alaska by R
Post-Carboniferous Stratigraphy, Northeastern Alaska By R. L. DETTERMAN, H. N. REISER, W. P. BROSGE,and]. T. DUTRO,JR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 886 Sedirnentary rocks of Permian to Quaternary age are named, described, and correlated with standard stratigraphic sequences UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1975 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Detterman, Robert L. Post-Carboniferous stratigraphy, northeastern Alaska. (Geological Survey Professional Paper 886) Bibliography: p. 45-46. Supt. of Docs. No.: I 19.16:886 1. Geology-Alaska. I. Detterman, Robert L. II. Series: United States. Geological Survey. Professional Paper 886. QE84.N74P67 551.7'6'09798 74-28084 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-02687-2 CONTENTS Page Page Abstract __ _ _ _ _ __ __ _ _ _ _ _ _ _ _ _ _ _ _ __ __ _ _ _ _ _ _ __ __ _ _ __ __ __ _ _ _ _ __ 1 Stratigraphy__:_Continued Introduction __________ ----------____ ----------------____ __ 1 Kingak Shale ---------------------------------------- 18 Purpose and scope ----------------------~------------- 1 Ignek Formation (abandoned) -------------------------- 20 Geographic setting ------------------------------------ 1 Okpikruak Formation (geographically restricted) ________ 21 Previous work and acknowledgments ------------------ 1 Kongakut Formation ---------------------------------- -
Nautiloid Shell Morphology
MEMOIR 13 Nautiloid Shell Morphology By ROUSSEAU H. FLOWER STATEBUREAUOFMINESANDMINERALRESOURCES NEWMEXICOINSTITUTEOFMININGANDTECHNOLOGY CAMPUSSTATION SOCORRO, NEWMEXICO MEMOIR 13 Nautiloid Shell Morphology By ROUSSEAU H. FLOIVER 1964 STATEBUREAUOFMINESANDMINERALRESOURCES NEWMEXICOINSTITUTEOFMININGANDTECHNOLOGY CAMPUSSTATION SOCORRO, NEWMEXICO NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY E. J. Workman, President STATE BUREAU OF MINES AND MINERAL RESOURCES Alvin J. Thompson, Director THE REGENTS MEMBERS EXOFFICIO THEHONORABLEJACKM.CAMPBELL ................................ Governor of New Mexico LEONARDDELAY() ................................................... Superintendent of Public Instruction APPOINTEDMEMBERS WILLIAM G. ABBOTT ................................ ................................ ............................... Hobbs EUGENE L. COULSON, M.D ................................................................. Socorro THOMASM.CRAMER ................................ ................................ ................... Carlsbad EVA M. LARRAZOLO (Mrs. Paul F.) ................................................. Albuquerque RICHARDM.ZIMMERLY ................................ ................................ ....... Socorro Published February 1 o, 1964 For Sale by the New Mexico Bureau of Mines & Mineral Resources Campus Station, Socorro, N. Mex.—Price $2.50 Contents Page ABSTRACT ....................................................................................................................................................... 1 INTRODUCTION -
First Three-Dimensionally Preserved in Situ Record of an Aptychophoran Ammonite Jaw Apparatus in the Jurassic and Discussion of the Function of Aptychi
Berliner paläobiologische Abhandlungen 10 321-330 Berlin 2009-11-11 First three-dimensionally preserved in situ record of an aptychophoran ammonite jaw apparatus in the Jurassic and discussion of the function of aptychi Günter Schweigert Abstract: A unique specimen of the microconch ammonite Lingulaticeras planulatum Berckhemer in Ziegler, 1958 comes from a tempestite bed within the Upper Jurassic lithographic limestones of Scham- haupten in Franconia (Painten Formation, uppermost Kimmeridgian). The shell is unique because it retains the complete jaw apparatus in the body chamber. The articulation of the Lamellaptychus and the corresponding upper beak are well preserved. The function of the aptychus is discussed in general, and an operculum function is thought to be unlikely. The formation of strongly calcified aptychi in aspidoceratids and some oppeliid ammonoids is interpreted as an added ballast weight to stabilize the conch for swimming in the water column. Keywords: Ammonites, aptychus, preservation, functional morphology, Upper Jurassic, lithographic lime- stones, Franconia, Germany Zusammenfassung: Ein einzigartig erhaltenes Exemplar des mikroconchen Ammoniten Lingulaticeras planulatum Berckhemer in Ziegler, 1958 aus einer Tempestitlage des oberjurassischen Plattenkalks von Schamhaupten in Franken (Painten-Formation, oberstes Kimmeridgium) enthält noch den vollständigen Kieferapparat in seiner Wohnkammer.Es zeigt die perfekte Artikualation des Lamellaptychus mit dem dazu- gehörenden Oberkiefer. Die Funktion des Aptychus wird allgemein diskutiert und eine Deckelfunktion für unwahrscheinlich gehalten. Die Ausbildung stark verkalkter Aptychen wie in Aspidoceraten und manchen Oppeliiden wird als zusätzliches Tariergewicht gedeutet, um das Gehäuse in starker bewegtem Wasser zu stabilisieren. Schlüsselwörter: Ammoniten, Aptychus, Erhaltung, Plattenkalke, Funktionsmorphologie, Oberjura, Franken, Deutschland Address of the author: Dr. Günter Schweigert, Staatliches Museum für Naturkunde, Rosenstein 1, D-70191 Stuttgart. -
New Data on the Jaw Apparatus of Fossil Cephalopods
New dataon the jaw apparatus of fossil cephalopods YURI D. ZAKHAROV AND TAMAZ A. LOMINADZE \ Zakharov, Yuri D. & Lominadze, Tamaz A. 19830115: New data on the jaw apparatus of fossil LETHAIA cephalopods. Lethaia, Vol. 16, pp. 67-78. Oslo. ISSN 0024-1164. A newly discovered fossil cephalopod jaw apparatus that may belong to Permian representatives of the Endocochlia is described. Permorhynchus dentatus n. gen. n. sp. is established on the basis of this ~ apparatus. The asymmetry of jaws in the Ectocochlia may be connected with the double function of the ventral jaw apparatus, and the well-developed, relatively large frontal plate of the ventral jaw should be regarded as a feature common to all representatives of ectocochlian cephalopods evolved from early Palaeozoic stock. Distinct features seen in the jaw apparatus of Upper Pcrmian cndocochlians include the pronounced beak form of both jaws and the presence of oblong wings on the ventral mandible. o Cephalopoda. jaw. operculum. aptychus, anaptychus, Permorhynchus n.gen.• evolution. Permian. Yuri D. Zakharov llOpllll Ilscumpueeu« Gaxapoe], Institute of Biology and Pedology, Far-Eastern Scientific Centre. USSR Academy of Science, Vladivostok 690022, USSR (EUOJl020-n9~BnlHbliiuucmu my m Ilaot.neeocmo-cnoro Ha."~H020 uenmpav Axaoeuuu 'HayK CCCP, Bnaoueocmo« 690022, CCCP); Tamaz A. Lominadze ITa.'W3 Apl.j1L10BUl.j Jlouunaoee), Institute of Palaeobiology of Georgian SSR Academy of Science. Tbilisi 380004. USSR (Hncmumvm naJle06UOJl02UU Atcaoeuuu naytc TpY3UHUjKOii CCP. T6'LJUCU 380004. CCP; 19th August. 1980 (revised 1982 06 28). The jaw apparatus of Recent cephalopods is re Turek 1978, Fig. 7, but not the reconstruction in presented by two jaw elements (Fig. -
Download Curriculum Vitae
NEIL H. LANDMAN CURATOR, CURATOR-IN-CHARGE AND PROFESSOR DIVISION OF PALEONTOLOGY HIGHEST DEGREE EARNED Ph.D. AREA OF SPECIALIZATION Evolution, life history, and systematics of externally shelled cephalopods EDUCATIONAL EXPERIENCE Ph.D. in Geology, Yale University, 1982 M. Phil. in Geology, Yale University, 1977 M.S. in Earth Sciences, Adelphi University, 1975 B.S. in Mathematics, summa cum laude, Polytechnic University of New York, 1972 PREVIOUS EXPERIENCE IN DOCTORAL EDUCATION FACULTY APPOINTMENTS Adjunct Professor, Department of Biology, City College Adjunct Professor, Department of Geology, Brooklyn College GRADUATE ADVISEES Susan Klofak, Biology, CUNY, 1999-present Krystal Kallenberg, Marine Sciences, Stony Brook, 2003-present GRADUATE COMMITTEES Christian Soucier, Biology, Brooklyn College, 2004-present Krystal Kallenberg, Marine Sciences, Stony Brook, 2003-present Yumiko Iwasaki, Geology, CUNY, 2000-2009 Emily Allen, Geology, University of Chicago, 2002-2005 Susan Klofak, Biology, CUNY, 1996-present Claude Monnet, University of Zurich, presently Sophie Low, Geology, Harvard University RESEARCH GRANT SUPPORT Kosciuszko Foundation. Comparative study of ammonite faunas from the United States Western Interior and Polish Lowland. Post-doc: Izabela Ploch, Geological Museum of Polish Geological Institute. 2011. NSF Grant MR1-R2 (Co-PI): Acquisition of a High Resolution CT-Scanner at the American Museum of Natural History: 2010-2013. NSF Grant No. DBI 0619559 (Co-PI): Acquisition of a Variable Pressure SEM at the AMNH: 2006-2009 NSF Grant No. EAR 0308926 (PI): Collaborative Research: Paleobiology, paleoceanography, and paleoclimatology of a time slice through the Western Interior Seaway: 2003-2006 National Science Foundation, Collaborative Research: Soft Tissues and Membrane Preservation in Permian Cephalopods, $40,000, February 1, 2002-January 31, 2006. -
First Record of Non-Mineralized Cephalopod Jaws and Arm Hooks
Klug et al. Swiss J Palaeontol (2020) 139:9 https://doi.org/10.1186/s13358-020-00210-y Swiss Journal of Palaeontology RESEARCH ARTICLE Open Access First record of non-mineralized cephalopod jaws and arm hooks from the latest Cretaceous of Eurytania, Greece Christian Klug1* , Donald Davesne2,3, Dirk Fuchs4 and Thodoris Argyriou5 Abstract Due to the lower fossilization potential of chitin, non-mineralized cephalopod jaws and arm hooks are much more rarely preserved as fossils than the calcitic lower jaws of ammonites or the calcitized jaw apparatuses of nautilids. Here, we report such non-mineralized fossil jaws and arm hooks from pelagic marly limestones of continental Greece. Two of the specimens lie on the same slab and are assigned to the Ammonitina; they represent upper jaws of the aptychus type, which is corroborated by fnds of aptychi. Additionally, one intermediate type and one anaptychus type are documented here. The morphology of all ammonite jaws suggest a desmoceratoid afnity. The other jaws are identifed as coleoid jaws. They share the overall U-shape and proportions of the outer and inner lamellae with Jurassic lower jaws of Trachyteuthis (Teudopseina). We also document the frst belemnoid arm hooks from the Tethyan Maastrichtian. The fossils described here document the presence of a typical Mesozoic cephalopod assemblage until the end of the Cretaceous in the eastern Tethys. Keywords: Cephalopoda, Ammonoidea, Desmoceratoidea, Coleoidea, Maastrichtian, Taphonomy Introduction as jaws, arm hooks, and radulae are occasionally found Fossil cephalopods are mainly known from preserved (Matern 1931; Mapes 1987; Fuchs 2006a; Landman et al. mineralized parts such as aragonitic phragmocones 2010; Kruta et al. -
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. -
The Barremian Heteromorph Ammonite Dissimilites from Northern Italy: Taxonomy and Evolutionary Implications
The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxonomy and evolutionary implications ALEXANDER LUKENEDER and SUSANNE LUKENEDER Lukeneder, A. and Lukeneder, S. 2014. The Barremian heteromorph ammonite Dissimilites from northern Italy: Taxon- omy and evolutionary implications. Acta Palaeontologica Polonica 59 (3): 663–680. A new acrioceratid ammonite, Dissimilites intermedius sp. nov., from the Barremian (Lower Cretaceous) of the Puez area (Dolomites, northern Italy) is described. Dissimilites intermedius sp. nov. is an intermediate form between D. dissimilis and D. trinodosum. The new species combines the ribbing style of D. dissimilis (bifurcating with intercalating single ribs) with the tuberculation style of D. trinodosum (trituberculation on entire shell). The shallow-helical spire, entirely comprising single ribs intercalated by trituberculated main ribs, is similar to the one of the assumed ancestor Acrioceras, whereas the increasing curvation of the younger forms resembles similar patterns observed in the descendant Toxoc- eratoides. These characters support the hypothesis of a direct evolutionary lineage from Acrioceras via Dissimilites to Toxoceratoides. D. intermedius sp. nov. ranges from the upper Lower Barremian (Moutoniceras moutonianum Zone) to the lower Upper Barremian (Toxancyloceras vandenheckii Zone). The new species allows to better understand the evolu- tion of the genus Dissimilites. The genus appears within the Nicklesia pulchella Zone represented by D. duboise, which most likely evolved into D. dissimilis. In the Kotetishvilia compressissima Zone, two morphological forms developed: smaller forms very similar to Acrioceras and forms with very long shaft and juvenile spire like in D. intermedius sp. nov. The latter most likely gave rise to D. subalternatus and D. trinodosum in the M. -
Palaeoecology and Palaeoenvironments of the Middle Jurassic to Lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard
NORWEGIAN JOURNAL OF GEOLOGY Vol 99 Nr. 1 https://dx.doi.org/10.17850/njg99-1-02 Palaeoecology and palaeoenvironments of the Middle Jurassic to lowermost Cretaceous Agardhfjellet Formation (Bathonian–Ryazanian), Spitsbergen, Svalbard Maayke J. Koevoets1, Øyvind Hammer1 & Crispin T.S. Little2 1Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, 0318 Oslo, Norway. 2School of Earth and Environment, University of Leeds, Leeds LS2 9JT, United Kingdom. E-mail corresponding author (Maayke J. Koevoets): [email protected] We describe the invertebrate assemblages in the Middle Jurassic to lowermost Cretaceous of the Agardhfjellet Formation present in the DH2 rock-core material of Central Spitsbergen (Svalbard). Previous studies of the Agardhfjellet Formation do not accurately reflect the distribution of invertebrates throughout the unit as they were limited to sampling discontinuous intervals at outcrop. The rock-core material shows the benthic bivalve fauna to reflect dysoxic, but not anoxic environments for the Oxfordian–Lower Kimmeridgian interval with sporadic monospecific assemblages of epifaunal bivalves, and more favourable conditions in the Volgian, with major increases in abundance and diversity of Hartwellia sp. assemblages. Overall, the new information from cores shows that abundance, diversity and stratigraphic continuity of the fossil record in the Upper Jurassic of Spitsbergen are considerably higher than indicated in outcrop studies. The inferred life positions and feeding habits of the benthic fauna refine our understanding of the depositional environments of the Agardhfjellet Formation. The pattern of occurrence of the bivalve genera is correlated with published studies of Arctic localities in East Greenland and northern Siberia and shows similarities in palaeoecology with the former but not the latter. -
Reconstruction of Belemnite Evolution Using Formal Concept Analysis
Reconstruction of Belemnite Evolution Using Formal Concept Analysis Radim Belohlavek,1,2∗ Martin Koˇst’´ak3†, and Petr Osicka2 1State University of New York at Binghamton, Binghamton, NY [email protected] 2Palacky University, Olomouc, Czech Republic 3Charles University, Prague, Czech Republic Abstract The paper presents results on using for- mal concept analysis in the problem of identification of taxa and reconstructing evolution from paleontological data. We present results of experiments performed with belemnites—a group of extinct marine cephalophods which seems particularly suit- Figure 1: Schematic sketch of belemnite body with able for such a purpose. We demonstrate position of the internal shell. Apical grey part repre- that the methods of formal concept analysis sents the rostrum. are capable of revealing taxa and relation- ships among them which are relevant from a paleobiological point of view. Coleoid cephalopods played an important role in the Cretaceous ecosystem in both the Northern and Southern hemispheres. Inside this diverse group, es- 1 Introduction and Problem Setting pecially belemnites were a common part of nectonic An important system-theoretic concept is that of a assemblages in marine shallower water ecosystems. taxonomy, i.e. a classification scheme arranged in They belong to coleoids with internal shell. The ex- a hierarchical structure. Biological taxonomies and ternal morphology of belemnites resembles partly Re- the methods of devising them are perhaps the best cent squids and their behavior—larger sets of spec- known and most widely studied. There exist sev- imens concentrated probably during spawning acts. eral approaches to biological classification, with phy- However, the internal shell characteristic is strongly logenetics (cladistics) and phenetics (numerical taxon- different in both, non related cephalopod groups.