DOCSLIB.ORG

Brachiopod Genera of the Suborders Orthoidea and Pentameroidea

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Brachiopod Genera of the Suborders Orthoidea and Pentameroidea MEMOIRS OF THE PFABODY MITSEUM OF NATURAL HT'^TORY VOLUME IV, PART J Brachiopod Genera of the Suborders Orthoidea and Pentameroidea BY CHARLES SCHUCHERT PROFESSOR OF PALEONTOLOGY, FMFRtTUS, YALE UNIVERSITY AND G. ARTHUR COOPER ASSISTANT CURATOR OF STRATIGRAPHIC PALEONTOLOGY U. S. NATIONAL MUSEUM LVX ET VERITAS NEW HAVEN, CONN. 1932 MEMOIRS OF THE PEABODY MUSEUM OF NATURAL HISTORY YALE UNIVERSITY Volume I. Odontornithes: A Monograph on the Extinct Toothed Birds of North America. By Othniel Charles Marsh. Pp. i-ix, 1-201, pis. 1-34, text figs. 1-40. 1880. To be obtained from the Peabody Museum. Price $3. Volume II. Parti. Brachiospongidse : A Memoir on a Group of Silurian Sponges. By Charles Emerson Beecher. Pp. 1-28, pis. 1-6, text figs. 1-4. 1889. To be obtained from the Peabody Museum. Price $1. No more published. Volume III. Part 1. American Mesozoic Mammalia. By George Gaylord Simp- son. Pp. i-xvi, 1-171, pis. 1-32, text figs. 1-62. 1929. To be obtained from the Yale University Press, New Haven, Conn. Price $5. Part 2. A Remarkable Ground Sloth. By Richard Swann Lull. Pp. i-x, 1-20, pis. 1-9, text figs. 1-3. 1929. To be obtained from the Yale University Press, New Haven, Conn. Price $1. Part 3. A Revision of the Ceratopsia or Horned Dinosaurs. By Richard Swann Lull. In preparation. Part 4. The Merycoidodontids, an Extinct Group of Ruminant Mammals. By Malcolm Rutherford Thorpe. In preparation. Volume IV. Part 1. Brachiopod Genera of the Suborders Orthoidea and Pentam- eroidea. By Charles Schuchert and G. Arthur Cooper. Pp. i-xii, 1-270, pis. A and 1-29, text figs. 1-36. 1932. To be obtained from the Peabody Museum. Price $7 (bound in cloth), $6 (bound in paper). Addenda et Corrigenda Date of publication: August 23, 1932. All photographs of specimens figured on the plates were made hy the author, with the assistance of Mr. Percy A. Morris. With the exception of Plate A, and Figure 24 of Plate 1, these photo- graphs are entirely without retouching. Page 57, column 1, line 14 from bottom, for impunctate read punctate. Page 80, column 1, delete first two lines. Page 81, column 2, line 7, for Oxarkian read Canadian. Page 84, legend for Fig. 17, next to last line, for lejt read right. Page 88, column 2, lines 14 and 15, delete which is rather strongly convex. Page 109, column 2, lines 4 and 5, delete We refer it doubtfully to our new genus Paurorthis. Page 141, table 14, Aulacophoria should be derived from Schizo- phorta, instead of from Orthotichia. MEMOIRS OF Volume I. Oc Volume II. Pa Nc Volume III. Pa Pa Pa Pa Volume IV. Pa BRACHIOPOD GENERA OF THE SUBORDERS ORTHOIDEA AND PENTAMEROIDEA contemplating the mere "The esthetic satisfaction to be derived from that runs through all variety of animal forms and from tracing the order instinct in human nature." its diversity appeals to a very deep David Sharp rightly, and that is seeing the "There is only one way of seeing things whole of them." John Kuskin MEMOIRS OF THE PEABODY MUSEUM OF NATURAL HISTORY VOLUME IV, PART 1 Brachiopod Genera of the Suborders Orthoidea and Pentameroidea BY CHARLES SCHUCHERT PROFESSOR OF PALEONTOLOGY, EMERITUS, YALE UNIVERSITY AND G. ARTHUR COOPER ASSISTANT CURATOR OF STRATIGRAPHIC PALEONTOLOGY U. S. NATIONAL MUSEUM PRINTED IN THE UNITED STATES OF AMERICA THE TUTTLE, MOREHOUSE & TAYLOR COMPANY NEW HAVEN, CONNECTICUT CONTENTS Page Introduction * Division of work •^ Location of specimens ^ Technique "^ Species lists Genetic lines Acknowledgments " Part I. Brief definitions of brachiopod terms 12 Part II. Principles of morphogenesis or evolution of form 12 Need of taxonomy 12 Rise of brachiopod genera 13 The genus concept Paleoecology Homoeomorphy Part III. Morphology of the orthoid shell 18 Morphology of the exterior 18 Orientation of the shell 18 '" Commissures Convexity ' Interareas ^^ Deltidium • 21 Modifications of the delthyrium (deltidium) 21 Function of the deltidium 22 Lateral plates 23 Modifications of the notothyrium (chilidium and chilidial plates) Morphology of the ventral interior Articulation Teeth Ys Sockets -P Dental plates Spondylium ^, History of the term Present views and definitions 29 Septa«j , .; , 30 Musculature 32 Paliial and genital markings -- markings Pallial ^^ » Genital or ovarian markings viii CONTENTS Part III. Morphology of the orthoid shell—Cont. Page Morphology of the dorsal interior 34 Notothyrial platform 34 Denticles and sockets 34 Denticles 34 Sockets 34 Cardinalia 34 Cardinal process 34 Brachiophores or brachial apparatus 37 Cruralium and pseudocruralium 39 Septa 39 Musculature 39 Pallial markings 40 Microstructure of the shell 41 Exopuncts 42 EndopunctEC 42 Value of punctation in taxonomy 42 Old-age characters 42 Part IV. The genera of the suborder Orthoidea 43 Superfamily Orthacea 43 Family Nisusiidae 43 Nisusia 44 Jamesella 46 Family Protorthidje 46 Protorthis 46 Loferia 47 Family Billingsellidas 48 BUlingsella 48 Family Eoorthidje 50 Witnanella 50 Eoorthis 51 Otusia 52 Bohemiella 52 Oligomys 53 Family Finkelnburgiidse, nov 54 Orusia ^ 54 Finkelnburgia 55 Family Plectorthidas 56 Subfamily Plectorthinx 57 Plectorthis 57 Hebertella 59 Mimella 61 Schizofhorella 62 Doleroldes 63 Subfamily Cyclocoeliinas 64 Cyclocaelia 64 Subfamily Platystrophiins 64 Platystrofhia 64; Mcewanella 69 — — CONTENTS >X Supcrfamily Orthacca Cont. Page Family Plcctorthidx Cont. • 70 Subfamily Orthostrophiinae _„ Orthostrophia -. O. dart(F, nov 71 Family Skenidiidas yi Skentdio'tdes ^2 S. hillingsi -o Sken'ui'tum 73 Family Orthida: _- Subfamily Orthinse ^5 Orthis n-j Cyrtonotella n-j Nicolella yg Glossorthis ^9 Paurorthis gQ Archtrorthis g. Subfamily Productorthinae gj Panderina g2 Productorthis r.. Subfamily Angusticardiniinae g^ Angusticardinia „, Subfamily Taffiinae g5 Taffia Z'ZZZZ'Z'. 85 Eostrofbomena „- Hesperorthinae Subfamily g5 Hesperorthis g^ Schizoramma gg nov S. gotlandica, gg Dolerorthis og Subfamily Glyptorthinae gg Glyptorthis ni Eridorthis g2 Ptychofleurella o, P. matapedia, nov 93 Family Dinorthidae o, Dinorthis nc Dinorthis s. s qc Plasiomys ge Retrorsirostra g, Pionorthis g, Marionella ' g_ Valcourea gg V. magna, nov _„ Multicostella gg Auitinella jqq Palceoitrophomena .qq Planidorsa iqi P. hella jQj P. crassicostella, nov Porambonitidae Family jq2 Porambonites Iqc Noetlingia , ^, .._, 105 Lycophonidae Family jq5 Lycophoria X CONTENTS Part IV. The genera of the suborder Orthoidea—Cont. Page Superfamily Clitambonacea 107 Family Deltatretida: 107 Deltatreta 108 Pomatotrema Ulrich and Cooper, nov 109 P. muralis Ulrich and Cooper, nov 109 Polytoechia 110 Family Clitambonitidx 110 Subfamily Plectellinae 112 Plectella 112 Ingrla 112 Subfamily Clitambonitins 113 Clitambonites 113 Vellamo 114 Clinambon, nov 115 Estlandia 115 Hemifronites 115 Pahlenella 117 Afomatella 117 Subfamily Gonambonitinas 118 Gonambonites 11° Superfamily Dalmanellacea H' Family Dalmanellidas 11° Dalmanella 120 Carinijerella 1^2 Aulacella 122 Proschixofhoria *2j Levenea ^^^ Heterorthina 124 Family Wattsellidae 124 Wattsella 125 Resserella 126 Horderleyella 1^7 Mendacella ^^' Idiorthis 128 Parmorthis ^2o P. crassicostata, nov 129 Fascicostella ^29 Family Bilobitidae 1^0 Bilobites 130 Family Mystrophoridae 1-^1 Mystrophora '-^^ Kayserella l-'^ Family Rhipidomellidae ^•'•^ Rhifidomella '•'' Perdkocardtma '•'-' Platyorthis 1^^ Thiemella 1^^ Family Heterorthidas '•^" Subfamily Heterorthinae j;;' Heterorthh 1-^' Subfamily Harknessellinae J;;^ Harknessella |^° Reuschella |^^ Smeathenella — CONTENTS xi Superfamily Dalmancllacea Cont. Page Family Schlzophoriid.-c 139 Subfamily Schizophoriinae 140 P'tonodema 141 Schizophoria 143 Orthot'tch'ta 144 Aulacofhoria 145 Subfamily Enteletinx 145 Enteletei 146 Parenteletes 147 Enieletina 148 Enteletella 148 Enteletoides 148 Subfamily Isorthinae 149 Isorthis 149 Family Linoporellidx 150 Ltnoporella 150 Orthotrofta 152 Family Tropidoleptidae, nov 152 Tropidoleftus 152 Part V. The genera of the suborder Pentameroidea 154 Superfamily Syntrophiacea 154 Family Clarkellids 155 Syntrofh'to'uies 155 Syntrofhina 155 Clarkella 156 Yangtzeella 157 Family Syntrophiids 158 Syntrofhta 158 Swantonia 159 Family Huenellidae 159 Huenella 159 Huenellina 160 Superfamily Pentameracea 161 Technique 162 Morphology of the Pentameracea 162 Exterior 162 Ventricosity 162 Ornamentation 162 Interareas 163 Ventral interior 163 Delthyrium 163 Deltidial cover 163 Deltidial plates 163 Spondylium 164 Dorsal interior 164 Septa 164 Musculature 164 Cardinalia 164 — xii CONTENTS Part V. The genera of the suborder Pentameroidea—Cont. Superfamily Pentameracea Cont. Page Generic and evolutionary trends 165 Loss of interareas and development of a planarea 165 Rostration 165 Reversion of normal convexity 165 Trilobation 165 Ornamentation 165 Loss of the ventral septum 166 Development of a cruralium 166 Parallel trends 166 Summary 166 Family Camerellidx 166 Camerella 167 Branconia 168 Parastrofhtnella 169 Anastrofhia 169 Metacamerella 170 Family Pentameridas 170 Subfamily Gypidulinse 171 Clorinda 171 Barrandella 173 Gyfidula 173 S'teberella : 175 Pentamerella 176 Zdimir 177 Subfamily Pentamerinae 177 Lasves 177 Pentamerus 177 Pentameroides 179 Lissocoelina 179 Cafelliniella 179 Holorhynchus 180 HarpidiuTn 180 Costatffi 180 Rhifidium 180 Conchidium 181 Brooksina 183 Cymbidium 183 Platymerella 184 V'trgiana 185 Family Stricklandidas 186 Stricklandta 187 Appendix 189 ? Superfamily Rhynchonellacea 189 Rhynchocamara 189 Liocoelia 189 Index 257 INTRODUCTION Brachiopods have interested the senior author since the days of his early youth, and by 1886, while assistant to E.
Load more

Recommended publications
  • A Revision of the Ceratopsia Or Horned Dinosaurs
    MEMOIRS OF THE PEABODY MUSEUM OF NATURAL HISTORY VOLUME III, 1 A.R1 A REVISION orf tneth< CERATOPSIA OR HORNED DINOSAURS BY RICHARD SWANN LULL STERLING PROFESSOR OF PALEONTOLOGY AND DIRECTOR OF PEABODY MUSEUM, YALE UNIVERSITY LVXET NEW HAVEN, CONN. *933 MEMOIRS OF THE PEABODY MUSEUM OF NATURAL HISTORY YALE UNIVERSITY Volume I. Odontornithes: A Monograph on the Extinct Toothed Birds of North America. By Othniel Charles Marsh. Pp. i-ix, 1-201, pis. 1-34, text figs. 1-40. 1880. To be obtained from the Peabody Museum. Price $3. Volume II. Part 1. Brachiospongidae : A Memoir on a Group of Silurian Sponges. By Charles Emerson Beecher. Pp. 1-28, pis. 1-6, text figs. 1-4. 1889. To be obtained from the Peabody Museum. Price $1. Volume III. Part 1. American Mesozoic Mammalia. By George Gaylord Simp- son. Pp. i-xvi, 1-171, pis. 1-32, text figs. 1-62. 1929. To be obtained from the Yale University Press, New Haven, Conn. Price $5. Part 2. A Remarkable Ground Sloth. By Richard Swann Lull. Pp. i-x, 1-20, pis. 1-9, text figs. 1-3. 1929. To be obtained from the Yale University Press, New Haven, Conn. Price $1. Part 3. A Revision of the Ceratopsia or Horned Dinosaurs. By Richard Swann Lull. Pp. i-xii, 1-175, pis. I-XVII, text figs. 1-42. 1933. To be obtained from the Peabody Museum. Price $5 (bound in cloth), $4 (bound in paper). Part 4. The Merycoidodontidae, an Extinct Group of Ruminant Mammals. By Malcolm Rutherford Thorpe. In preparation.
    [Show full text]
  • George P. Merrill Collection, Circa 1800-1930 and Undated
    George P. Merrill Collection, circa 1800-1930 and undated Finding aid prepared by Smithsonian Institution Archives Smithsonian Institution Archives Washington, D.C. Contact us at [email protected] Table of Contents Collection Overview ........................................................................................................ 1 Administrative Information .............................................................................................. 1 Historical Note.................................................................................................................. 1 Descriptive Entry.............................................................................................................. 2 Names and Subjects ...................................................................................................... 3 Container Listing ............................................................................................................. 4 Series 1: PHOTOGRAPHS, CORRESPONDENCE AND RELATED MATERIAL CONCERNING INDIVIDUAL GEOLOGISTS AND SCIENTISTS, CIRCA 1800-1920................................................................................................................. 4 Series 2: PHOTOGRAPHS OF GROUPS OF GEOLOGISTS, SCIENTISTS AND SMITHSONIAN STAFF, CIRCA 1860-1930........................................................... 30 Series 3: PHOTOGRAPHS OF THE UNITED STATES GEOLOGICAL AND GEOGRAPHICAL SURVEY OF THE TERRITORIES (HAYDEN SURVEYS), CIRCA 1871-1877..............................................................................................................
    [Show full text]
  • The Earliest Known Kinnella, an Orthide Brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada
    The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada CHRISTOPHER A. STOTT and JISUO JIN Stott, C.A. and Jin, J. 2007. The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada. Acta Palaeontologica Polonica 52 (3): 535–546. A new species of the orthide brachiopod genus Kinnella is described from the Upper Member of the Georgian Bay Forma− tion (Upper Ordovician) of Manitoulin Island, Ontario, Canada. This species, herein designated as Kinnella laurentiana sp. nov., occurs in strata of Richmondian (mid−Ashgill; Katian) age, most likely correlative with the eastern North Ameri− can Dicellograptus complanatus Zone. This occurrence extends the known stratigraphic range of Kinnella downward considerably from its previously inferred basal Hirnantian inception. The new species is characterized by a moderately convex dorsal valve and an apsacline ventral interarea rarely approaching catacline. This is the third reported occurrence of Kinnella in North America, and is the only species known to have inhabited the epicontinental seas of Laurentia. The associated benthic shelly fauna indicates a depositional environment within fair weather wave base (BA 2). The ancestry of Kinnella and this species appears most likely to lie among older, morphologically similar members of the Draboviidae which were seemingly confined to higher latitude faunal provinces prior to the Hirnantian glacial event. Thus, the mid−Ashgill occurrence of Kinnella laurentiana in the palaeotropically located Manitoulin Island region suggests the mixing of a probable cooler water taxon with the warmer water epicontinental shelly fauna of Laurentia, as well as a pos− sible earlier episode of low−latitude oceanic cooling.
    [Show full text]
  • Resources on Charles Darwin, Evolution, and the Galapagos Islands: a Selected Bibliography
    Library and Information Services Division Current References 2009-1 The Year of Darwin 2009 Discovering Darwin at NOAA Central Library: Resources on Charles Darwin, Evolution, and the Galapagos Islands: A Selected Bibliography Prepared by Anna Fiolek and Kathleen A. Kelly U.S. Department of Commerce National Oceanic and Atmospheric Administration National Environmental Satellite, Data, and Information Service National Oceanographic Data Center NOAA Central Library October 2009 http://www.lib.noaa.gov/researchtools/subjectguides/darwinbib.pdf Contents: Preface …………………………………………………………………. p. 3 Acknowledgment ………………………………………………………. p. 4 I. Darwin Chronology ………………………………………………….. p. 5-6 II. Monographic Publications By or About Charles Darwin ………... p. 7-13 in the NOAA Central Library Network Catalog (NOAALINC) III. Internet Resources Related to Charles Darwin ……. ……………. p. 14-17 And His Science (Including online images and videos) IV. Darwin Science-related Journals in the NOAA Libraries’………. p. 17-18 Network 2 Preface This Bibliography has been prepared to support NOAA Central Library (NCL) outreach activities during the Year of Darwin 2009, including a “Discovering Darwin at NOAA Central Library” Exhibit. The Year of Darwin 2009 has been observed worldwide by libraries, museums, academic institutions and scientific publishers, to honor the 150th anniversary of On the Origin of Species and the 200th anniversary of Charles Darwin’s birth. This Bibliography reflects the library’s unique print and online resources on Charles Darwin, Evolution, and the Galapagos Islands. It includes citations organized “by title” from NOAALINC, the library’s online catalog, and from the library’s historical collections. The data and listings are comprehensive from the 19th century to the present. The formats represented in this resource include printed monographs, serial publications, graphical materials, videos, online full-text documents, a related journal list, and Web resources.
    [Show full text]
  • First Major Appearance of Brachiopod-Dominated Benthic Shelly Communities in the Reef Ecosystem During the Early Silurian Cale A.C
    Western University Scholarship@Western Electronic Thesis and Dissertation Repository August 2016 First Major Appearance of Brachiopod-Dominated Benthic Shelly Communities in the Reef Ecosystem during the Early Silurian Cale A.C. Gushulak The University of Western Ontario Supervisor Dr. Jisuo Jin The University of Western Ontario Joint Supervisor Dr. Rong-yu Li The University of Western Ontario Graduate Program in Geology A thesis submitted in partial fulfillment of the requirements for the degree in Master of Science © Cale A.C. Gushulak 2016 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Evolution Commons, Other Ecology and Evolutionary Biology Commons, Paleobiology Commons, and the Paleontology Commons Recommended Citation Gushulak, Cale A.C., "First Major Appearance of Brachiopod-Dominated Benthic Shelly Communities in the Reef Ecosystem during the Early Silurian" (2016). Electronic Thesis and Dissertation Repository. 3972. https://ir.lib.uwo.ca/etd/3972 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected], [email protected]. Abstract The early Silurian reefs of the Attawapiskat Formation in the Hudson Bay Basin preserved the oldest record of major invasion of the coral-stromatoporoid skeletal reefs by brachiopods and other marine shelly benthos, providing an excellent opportunity for studying the early evolution, functional morphology, and community organization of the rich and diverse reef-dwelling brachiopods. Biometric and multivariate analysis demonstrate that the reef-dwelling Pentameroides septentrionalis evolved from the level- bottom-dwelling Pentameroides subrectus to develop a larger and more globular shell.
    [Show full text]
  • Åsa Erlfeldt Brachiopod Faunal Dynamics During the Silurian Ireviken Event, Gotland, Sweden
    Brachiopod faunal dynamics during the Silurian Ireviken Event, Gotland, Sweden Åsa Erlfeldt Examensarbeten i Geologi vid Lunds universitet - Berggrundsgeologi, nr. 199 Geologiska institutionen Centrum för GeoBiosfärsvetenskap Lunds universitet 2006 Contents 1 Introduction........................................................................................................................................................5 1.1 Brachiopods 5 2 The Ireviken Event.............................................................................................................................................6 3 Geological setting and stratigraphy..................................................................................................................7 3.1 The Lower and Upper Visby formations 8 4 Materials and methods ......................................................................................................................................9 4.1 Sampled materials 9 4.2 Literature studies 9 4.3 Preparation 9 5 Results ...............................................................................................................................................................10 5.1 Systematic palaeontology 10 6 Discussion..........................................................................................................................................................17 6.1 Comparison of sampled material and the data from the literature 18 6.1.1 The number of brachiopod species in the Lower and Upper Visby formations 18 6.1.2
    [Show full text]
  • A Kralodvorian (Upper Katian, Upper Ordovician)
    A Kralodvorian (upper Katian, Upper Ordovician) benthic association from the Ferradosa Formation (Central Portugal) and its significance for the redefinition and subdivision of the Kralodvorian Stage JORGE COLMENAR, SOFIA PEREIRA, MIGUEL PIRES, CARLOS MARQUES DA SILVA, ARTUR ABREU SÁ & TIMOTHY P. YOUNG A new upper Katian (Kralodvorian Regional Stage) benthic association from the Riba de Cima Member of the Ferradosa Formation, Portugal, is described. It is dominated by bryozoans and echinoderms but brachiopods and trilobites are also present. More than 20 species of brachiopods, nine of trilobites and eight of echinoderms have been identified in the four studied localities. Among the brachiopods Kjaerina (Villasina) meloui Colmenar, 2016, Dolerorthis abeirensis Mélou, 1990 and Bicuspina cf. armoricana Mélou, 1990 are significant. These species were previously recorded only in the uppermost Rosan Formation (Armorican Massif, France). Porambonites dreyfussi Havlíček, 1981 is also reported in this paper for the first time besides its type horizon in the upper part of the Kralodvorian Gabian Formation (Montagne Noire, France). Most of the identified trilobite taxa were previously documented only in the Kralodvorian Cystoid Limestone Formation (Iberian Chains, Spain), except Parillaenus? cf. creber Hammann, 1992 and Amphoriops cf. inflatus (Hammann, 1992), whose referred species are also present in the upper Berounian–Kralodvorian Portixeddu Formation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 and Amphoriops cf. inflatus represent the first occurrence of these genera-groups in Portugal. These records are import- ant additions to the knowledge of the Portuguese Late Ordovician benthic marine communities, providing crucial new data to constrain the biostratigraphy of the Riba de Cima Member and the palaeogeographical setting of this region at that time.
    [Show full text]
  • The Silurian of Central Kentucky, U.S.A.: Stratigraphy, Palaeoenvironments and Palaeoecology
    The Silurian of central Kentucky, U.S.A.: Stratigraphy, palaeoenvironments and palaeoecology FRANK R. ETTENSOHN, R. THOMAS LIERMAN, CHARLES E. MASON, WILLIAM M. ANDREWS, R. TODD HENDRICKS, DANIEL J. PHELPS & LAWRENCE A. GORDON ETTENSOHN, F.R., LIERMAN, R.T., MASON, C.E., ANDREWS, W.M., HENDRICKS, R.T., PHELPS, D.J. & GORDON, L.A., 2013:04:26. The Silurian of central Kentucky, U.S.A.: Stratigraphy, palaeoenvironments and palaeoecology. Memoirs of the Association of Australasian Palaeontologists 44, 159-189. ISSN 0810-8889. Silurian rocks in Kentucky are exposed on the eastern and western flanks of the Cincinnati Arch, a large-wavelength cratonic structure separating the Appalachian foreland basin from the intracratonic Illinois Basin. The Cincinnati Arch area experienced uplift during latest Ordovician-early Silurian time, so that the exposed Silurian section is relatively thin due to onlap and post- Silurian erosional truncation on the arch. On both flanks of the arch, dolomitic carbonates predominate, but the section on the eastern side reflects a more shale-rich ramp that faced eastern Appalachian source areas. In the Silurian section on the western side of the arch, which apparently developed across a platform-like isolation-accommodation zone, shales are rare except dur- ing some highstand episodes, and rocks in the area reflect deposition across a broad, low-gradient shelf area, interrupted by structurally controlled topographic breaks. Using the progression of interpreted depositional environments and nearshore faunal communities, a relative sea-level curve, which parallels those of previous workers, was generated for the section in Kentucky. While the curve clearly shows the influence of glacial eustasy, distinct indications of the far-field, flexural influence of Taconian and Salinic tectonism are also present.
    [Show full text]
  • 1352 Colmenar.Vp
    Upper Ordovician brachiopods from the Montagne Noire (France): endemic Gondwanan predecessors of Prehirnantian low-latitude immigrants JORGE COLMENAR, ENRIQUE VILLAS & DANIEL VIZCAÏNO The stratigraphy, brachiopod systematics and palaeoecology of the Upper Ordovician succession from the Cabrières Klippes, at the eastern ending of the southern slope of the Montagne Noire (southern France) are studied. Two new for- mations have been formally introduced: the Glauzy Formation (middle Katian, Ka2, in its uppermost fossiliferous strata) and the Gabian Formation (middle–upper Katian, Ka2–Ka4), to characterize, respectively, the thickly bedded quartzitic sandstones overlying volcaniclastic rocks, and the conformably overlying marls and limestones, rich in bryozoans, echinoderms and brachiopods. The systematic palaeontology of the brachiopods yielded in the uppermost beds of the Glauzy Formation has been studied, and five taxa are described, including a new platyorthid genus and species, Proclinorthis vailhanensis. The palaeoecological analysis of the Glauzy Fm., using both taphonomical and func- tional-morphological criteria, has allowed for the introduction of a new formal palaeoecological unit, the Svobodaina havliceki Community. It characterizes the recurrent low-diversity brachiopod association, usually dominated by S. havliceki, frequent in quartzitic sandstone lithofacies of the Upper Ordovician outcrops throughout southwestern Eu- rope. It is interpreted as having developed in the shore face environments of the Benthic Assemblage 3 (BA-3), along the Gondwanan Mediterranean margin during the early- and mid-Katian. This new community is bounded coastward by an undescribed rhynchonellid community (BA-2) and seaward by the Nicolella Community (also BA-3), during its latest time span. This study allows a better understanding of when, why and how occurred the replacement of Gondwanan en- demic associations, represented by the S.
    [Show full text]
  • The Upper Ordovician Glaciation in Sw Libya – a Subsurface Perspective
    J.C. Gutiérrez-Marco, I. Rábano and D. García-Bellido (eds.), Ordovician of the World. Cuadernos del Museo Geominero, 14. Instituto Geológico y Minero de España, Madrid. ISBN 978-84-7840-857-3 © Instituto Geológico y Minero de España 2011 ICE IN THE SAHARA: THE UPPER ORDOVICIAN GLACIATION IN SW LIBYA – A SUBSURFACE PERSPECTIVE N.D. McDougall1 and R. Gruenwald2 1 Repsol Exploración, Paseo de la Castellana 280, 28046 Madrid, Spain. [email protected] 2 REMSA, Dhat El-Imad Complex, Tower 3, Floor 9, Tripoli, Libya. Keywords: Ordovician, Libya, glaciation, Mamuniyat, Melaz Shugran, Hirnantian. INTRODUCTION An Upper Ordovician glacial episode is widely recognized as a significant event in the geological history of the Lower Paleozoic. This is especially so in the case of the Saharan Platform where Upper Ordovician sediments are well developed and represent a major target for hydrocarbon exploration. This paper is a brief summary of the results of fieldwork, in outcrops across SW Libya, together with the analysis of cores, hundreds of well logs (including many high quality image logs) and seismic lines focused on the uppermost Ordovician of the Murzuq Basin. STRATIGRAPHIC FRAMEWORK The uppermost Ordovician section is the youngest of three major sequences recognized widely across the entire Saharan Platform: Sequence CO1: Unconformably overlies the Precambrian or Infracambrian basement. It comprises the possible Upper Cambrian to Lowermost Ordovician Hassaouna Formation. Sequence CO2: Truncates CO1 along a low angle, Type II unconformity. It comprises the laterally extensive and distinctive Lower Ordovician (Tremadocian-Floian?) Achebayat Formation overlain, along a probable transgressive surface of erosion, by interbedded burrowed sandstones, cross-bedded channel-fill sandstones and mudstones of Middle Ordovician age (Dapingian-Sandbian), known as the Hawaz Formation, and interpreted as shallow-marine sediments deposited within a megaestuary or gulf.
    [Show full text]
  • 157Th Meeting of the National Park System Advisory Board November 4-5, 2015
    NORTHEAST REGION Boston National Historical Park 157th Meeting Citizen advisors chartered by Congress to help the National Park Service care for special places saved by the American people so that all may experience our heritage. November 4-5, 2015 • Boston National Historical Park • Boston, Massachusetts Meeting of November 4-5, 2015 FEDERAL REGISTER MEETING NOTICE AGENDA MINUTES Meeting of May 6-7, 2015 REPORT OF THE SCIENCE COMMITTEE NATIONAL PARK SERVICE URBAN AGENDA REPORT ON THE NATIONAL PARK SERVICE COMPREHENSIVE ECONOMIC VALUATION STUDY OVERVIEW OF NATIONAL PARK SERVICE ACTIONS ON ADVISORY BOARD RECOMMENDATIONS • Planning for a Future National Park System • Strengthening NPS Science and Resource Stewardship • Recommending National Natural Landmarks • Recommending National Historic Landmarks • Asian American Pacific Islander, Latino and LGBT Heritage Initiatives • Expanding Collaboration in Education • Encouraging New Philanthropic Partnerships • Developing Leadership and Nurturing Innovation • Supporting the National Park Service Centennial Campaign REPORT OF THE NATIONAL HISTORIC LANDMARKS COMMITTEE PLANNING A BOARD SUMMARY REPORT MEETING SITE—Boston National Historical Park, Commandant’s House, Charlestown Navy Yard, Boston, MA 02139 617-242-5611 LODGING SITE—Hyatt Regency Cambridge, 575 Memorial Drive, Cambridge, MA 62139 617-492-1234 / Fax 617-491-6906 Travel to Boston, Massachusetts, on Tuesday, November 3, 2015 Hotel Check in 4:00 pm Check out 12:00 noon Hotel Restaurant: Zephyr on the Charles / Breakfast 6:30-11:00 am / Lunch 11:00 am - 5:00 pm / Dinner 5-11:00 pm Room Service: Breakfast 6:00 am - 11:00 am / Dinner 5:00 pm - 11:00 pm Wednesday NOVEMBER 4 NOTE—Meeting attire is business. The tour will involve some walking and climbing stairs.
    [Show full text]
  • Biographical Memoirs
    NATIONAL ACADEMY OF SCIENCES G EORGE GAYLORD S IMPSON 1902—1984 A Biographical Memoir by E V E R E T T O LSON Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1991 NATIONAL ACADEMY OF SCIENCES WASHINGTON D.C. GEORGE GAYLORD SIMPSON June 16, 1902-October 6, 1984 BY EVERETT C. OLSON1 EORGE GAYLORD SIMPSON'S passing in 1984 brought Gan era in vertebrate paleontology to an end. Along with Edward Drinker Cope, Henry Fairfield Osborn, and Alfred Sherwood Romer, Simpson ranks among the great paleon- tologists of our time. The intellects of several generations of students were shaped by either following or rejecting his ele- gant analyses and interpretations of evolution and the history of life. Although the "Simpson Era" had its roots in the 1920s and 1930s, it seemed to emerge fully formed and without precedent with the publication of Tempo and Mode in Evolution (delayed until 1944 by World War II), following belatedly on the heels of Quantitative Zoology (1939), which Simpson had written with Anne Roe. Both books left researchers in a va- riety of fields pondering and often revising, conceptual bases 1 Although I had earlier written a memorial to George Gaylord Simpson for the Geological Society of America, I agreed to prepare a more intimate and more per- sonal essay for the National Academy of Sciences Biographical Memoirs. The more objective accounts of his life include the essay mentioned above (Memorial Series, Geological Society of America, 1985) and the essay by Bobb Schaeffer and Malcolm McKenna (News Bulletin, Society of Vertebrate Paleontology, no.
    [Show full text]