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Sequence of Post-Moult Exoskeleton Hardening Preserved in a Trilobite Mass Moult Assemblage from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco
Editors' choice Sequence of post-moult exoskeleton hardening preserved in a trilobite mass moult assemblage from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco HARRIET B. DRAGE, THIJS R.A. VANDENBROUCKE, PETER VAN ROY, and ALLISON C. DALEY Drage, H.B., Vandenbroucke, T.R.A., Van Roy, P., and Daley, A.C. 2019. Sequence of post-moult exoskeleton hardening preserved in a trilobite mass moult assemblage from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco. Acta Palaeontologica Polonica 64 (2): 261–273. Euarthropods have a tough exoskeleton that provides crucial protection from predation and parasitism. However, this is restrictive to growth and must be periodically moulted. The moulting sequence is well-known from extant arthropods, consisting of: (i) the long inter-moult stage, in which no changes occur to the hardened exoskeleton; (ii) the pre-moult stage where the old exoskeleton is detached and the new one secreted; (iii) exuviation, when the old exoskeleton is moulted; and (iv) the post-moult stage during which the new exoskeleton starts as soft, thin, and partially compressed and gradually hardens to the robust exoskeleton of the inter-moult stage. Trilobite fossils typically consist of inter-moult carcasses or moulted exuviae, but specimens preserving the post-moult stage are rare. Here we describe nine specimens assigned to Symphysurus ebbestadi representing the first group of contemporaneous fossils collected that preserve all key stages of the moulting process in one taxon, including the post-moult stage. They were collected from a single lens in the Tremadocian part of the Fezouata Shale Formation, Morocco. Based on cephalic displacement and comparison to other trilobite moults, one specimen appears to represent a moulted exoskeleton. -
Plumulitid Machaeridian Remains from the Silurian (Telychian) of Severnaya Zemlya, Arctic Russia
NORWEGIAN JOURNAL OF GEOLOGY Plumulitid mochoeridion remains from the Silurion, Arctic Russio 53 Plumulitid machaeridian remains from the Silurian (Telychian) of Severnaya Zemlya, Arctic Russia Anette E.S. Hogstrom, Olga K. Bogolepova & Alexander P. Gubanov Hogstrom, A.E.S., Bogolepova, O.K. and Gubanov, A.P.: Plumulitid machaeridian remains from the Silurian (Telychian) of Sevemaya Zemlya, Arc tic Russia. Norsk Geologisk Tidsskrift, Vol. 82, pp. 53-55. Trondheim 2002, ISSN 029-196X. The machaeridian genus Plumulites is reported for the first time from the Severnaya ZemlyaArchipelago of Arctic Russia, where it occurs in limes tone concretions within the Sredninskaya Formation. Graptolites fromthe same concretions indicate the late crispus- griestoniensisBiozones of the mid Telychian (Uandovery). Similarities to plumulitid sclerites from the Upper Ordovician of the Tairnyr Peninsula promotes further interest in machaeridian faunas fromthis region. A.E.S. Hogstromi, O.K. Bogolepova and A.P. Gubanov, Historical Geology & Palaeontology, Dept. of Earth Sciences, Uppsala University, Norbyviigen 22, SE-752 36, Uppsala, Sweden. I Temporaryaddress: Dept. of Earth Sciences, Wills Memorial Building, Queen's Road, Bristol BSB l RJ, UK. lntroduction Stratigraphy and locality The global record of Silurian machaeridians is limited, Machaeridians discussed herein originate from the but includes rare articulated specimens, and more com Lower Silurian Sredninskaya Formation (Matukhin et monly isolated sclerites that have been found in Britain al. 1999). To avoid nomenclatural questions, it should (de Koninck 1857; Woodward 1865; Withers 1926 and be noted that these rocks were previously referred to as Adrain et al. 1991), the Baltic Region (Aurivillius 1892; the Golomaynnaya Formation (Menner et al. -
2020 Earth Sciences Alumni News
ALUMNI NEWS Issue 29 February 2020 for Alumni and Friends Inside: Madeleine Fritz: a Pioneer Female Geologist - pg 17 Field Education: Outer Banks, Trinidad, Turkey - pg 18 Alumni Night & Lab Tours - pg 24 Accolades for Barbara Sherwood Lollar - pg 4 Steve Scott 1941 –2019 1 Table of Contents Message from the Chair Message from the Chair 2 Welcome! It’s a privilege to write to you here again in Focusing on the Future 3 the Newsletter as Chair of our Department. Probably Awards, Honours and Appointments 4 the best part of my job is bridging among long-time Retirements 6 alumni, recent graduates, and our current group of New Staff 7 geoscientists. This year’s Newsletter documents an Departures 7 exceptional breadth of activities and happenings. Joubin-James Distinguished Visitors 8 Personal highlights for me include: joining Barbara Digger Gorman, Past and Present 8 Sherwood Lollar at Rideau Hall to recognize and to Class of 2019 9 celebrate her receipt of the NSERC Herzberg Medal; Student Awards 10 climbing high inside the ignimbrite fairy chimneys Earth Sciences Golf Tournament 12 in Cappadocia with students on our 10-day Donor Acknowledgements 13 adventures in Anatolia; enjoying a beer during the numerous performances of our departmental Faultsettos a cappella group; golfing on a perfect AESRC 13 autumn day with Geology alumni and friends at Nobleton Lakes (apologies to members of my foursome for my various forest/lake/bunker shots and Departmental Research 14 time spent digging potatoes into the Nobleton fairways…). Paleomagnatism Lab Closure 16 Who says the life of an academic Chair is drudgery? Madeleine Fritz 17 We are in the midst of two new hires this year and look forward to two new faculty colleagues: an Assistant Professor in Igneous Petrology/ Field Education 18 High-T Geochemistry and at the Associate/Full Professor level in Applied Geophysics to fill the endowed Teck Chair. -
List of Schools and Boards Using Etms - October 23, 2020
List of Schools and Boards Using eTMS - October 23, 2020 Board Name School Name Algoma DSB ADSB Virtual Secondary School Algoma DSB Bawating Collegiate And VS - CLOSED Algoma DSB Superior Heights C and VS Algoma DSB White Pines Collegiate And Vocational School Algoma DSB Sault Ste Marie Adult Learning Centre Algoma DSB Elliot Lake Secondary School Algoma DSB North Shore Adult Education School Algoma DSB Central Algoma SS Adult Learning Centre Algoma DSB Sir James Dunn C And VS - CLOSED Algoma DSB Central Algoma Secondary School Algoma DSB Korah Collegiate And Vocational School Algoma DSB Michipicoten High School Algoma DSB North Shore Adolescent Education School Algoma DSB W C Eaket Secondary School Algoma DSB Algoma Education Connection Algoma DSB Chapleau High School Algoma DSB Hornepayne High School Algonquin and Lakeshore CDSB ALCDSB Summer School Algonquin and Lakeshore CDSB Loyola Community Learning Centre-Con Ed Algonquin and Lakeshore CDSB Nicholson Catholic College Algonquin and Lakeshore CDSB St Theresa Catholic Secondary School Algonquin and Lakeshore CDSB Loyola Community Learning Centre Algonquin and Lakeshore CDSB St Paul Catholic Secondary School Algonquin and Lakeshore CDSB Regiopolis/Notre-Dame Catholic High School Algonquin and Lakeshore CDSB Holy Cross Catholic Secondary School Avon Maitland DSB Exeter Ctr For Employment And Learning NS - CLOSED Avon Maitland DSB South Huron District High School Avon Maitland DSB Stratford Ctr For Employment and Learning NS Avon Maitland DSB Wingham Employment And Learning NS Avon Maitland -
2005-Fall.Pdf
UNIVERSITY OF TORONTO MEDICAL ALUMNI ASSOCIATION MAGAZINE Winter 2005 MAAMATTERS Dr. Patricia White & Dr. Shannon Wires Women in the balance Finding ways to combine passions Also Inside: Remembering a friendship • Convocation 2005 • MedLife thanks you PRESIDENT’S MESSAGE D r. Suan-Seh Foo (Class of 1990) An honour, an obligation – A proud tradition We have a duty to ourselves to uphold what is best – a duty to our patients, a duty to the profession, a duty to our alma mater. alumni, we share a common his- to introduce the interim Dean of AS tory. Continuity and collegiality Medicine, Dr. Catharine Whiteside from are part of the MAA tradition and the fun- the Class of 1975. She will be our hon- damental thread that binds our genera- orary president, and I would like to assure tions together. They are the foundation her of our support. Dr. Flavio Habal from upon which we build and the sure plat- the Class of 1977 is the MAA’s new treas- form that allows us to spring forward to urer. It is important to me that we recog- the future. nize our past treasurer, Dr. Steven Tishler. So we are really not alone, unless we Steven has put a tremendous amount of choose to be. We are part of something work into husbanding our investments, greater – greater than ourselves. It is both overseeing expenditures in the office and a joyous and a humbling realization. It is ensuring that we do not become generous not without obligation. We have a duty to beyond our means. Thank you, Dr. -
Ordovician Stratigraphy and Benthic Community Replacements in the Eastern Anti-Atlas, Morocco J
Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco J. Javier Alvaro, Mohammed Benharref, Jacques Destombes, Juan Carlos Gutiérrez-Marco, Aaron Hunter, Bertrand Lefebvre, Peter van Roy, Samuel Zamora To cite this version: J. Javier Alvaro, Mohammed Benharref, Jacques Destombes, Juan Carlos Gutiérrez-Marco, Aaron Hunter, et al.. Ordovician stratigraphy and benthic community replacements in the eastern Anti- Atlas, Morocco. The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco, 485, The Geological Society of London, pp.SP485.20, In press, Geological Society, London, Special Publication, 10.1144/SP485.20. hal-02405970 HAL Id: hal-02405970 https://hal.archives-ouvertes.fr/hal-02405970 Submitted on 13 Nov 2020 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. The Geological Society Special Publications Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco --Manuscript Draft-- Manuscript Number: GSLSpecPub2019-17R1 Article Type: Research article Full Title: Ordovician stratigraphy and benthic community replacements in the eastern Anti-Atlas, Morocco Short Title: Ordovician stratigraphy of the Anti-Atlas Corresponding Author: Javier Alvaro Instituto de Geociencias SPAIN Corresponding Author E-Mail: [email protected] Other Authors: MOHAMMED BENHARREF JACQUES DESTOMBES JUAN CARLOS GUTIÉRREZ-MARCO AARON W. -
The Early History of the Metazoa—A Paleontologist's Viewpoint
ISSN 20790864, Biology Bulletin Reviews, 2015, Vol. 5, No. 5, pp. 415–461. © Pleiades Publishing, Ltd., 2015. Original Russian Text © A.Yu. Zhuravlev, 2014, published in Zhurnal Obshchei Biologii, 2014, Vol. 75, No. 6, pp. 411–465. The Early History of the Metazoa—a Paleontologist’s Viewpoint A. Yu. Zhuravlev Geological Institute, Russian Academy of Sciences, per. Pyzhevsky 7, Moscow, 7119017 Russia email: [email protected] Received January 21, 2014 Abstract—Successful molecular biology, which led to the revision of fundamental views on the relationships and evolutionary pathways of major groups (“phyla”) of multicellular animals, has been much more appre ciated by paleontologists than by zoologists. This is not surprising, because it is the fossil record that provides evidence for the hypotheses of molecular biology. The fossil record suggests that the different “phyla” now united in the Ecdysozoa, which comprises arthropods, onychophorans, tardigrades, priapulids, and nemato morphs, include a number of transitional forms that became extinct in the early Palaeozoic. The morphology of these organisms agrees entirely with that of the hypothetical ancestral forms reconstructed based on onto genetic studies. No intermediates, even tentative ones, between arthropods and annelids are found in the fos sil record. The study of the earliest Deuterostomia, the only branch of the Bilateria agreed on by all biological disciplines, gives insight into their early evolutionary history, suggesting the existence of motile bilaterally symmetrical forms at the dawn of chordates, hemichordates, and echinoderms. Interpretation of the early history of the Lophotrochozoa is even more difficult because, in contrast to other bilaterians, their oldest fos sils are preserved only as mineralized skeletons. -
Printable List of Laureates
Laureates of the Canadian Medical Hall of Fame A E Maude Abbott MD* (1994) Connie J. Eaves PhD (2019) Albert Aguayo MD(2011) John Evans MD* (2000) Oswald Avery MD (2004) F B Ray Farquharson MD* (1998) Elizabeth Bagshaw MD* (2007) Hon. Sylvia Fedoruk MA* (2009) Sir Frederick Banting MD* (1994) William Feindel MD PhD* (2003) Henry Barnett MD* (1995) B. Brett Finlay PhD (2018) Murray Barr MD* (1998) C. Miller Fisher MD* (1998) Charles Beer PhD* (1997) James FitzGerald MD PhD* (2004) Bernard Belleau PhD* (2000) Claude Fortier MD* (1998) Philip B. Berger MD (2018) Terry Fox* (2012) Michel G. Bergeron MD (2017) Armand Frappier MD* (2012) Alan Bernstein PhD (2015) Clarke Fraser MD PhD* (2012) Charles H. Best MD PhD* (1994) Henry Friesen MD (2001) Norman Bethune MD* (1998) John Bienenstock MD (2011) G Wilfred G. Bigelow MD* (1997) William Gallie MD* (2001) Michael Bliss PhD* (2016) Jacques Genest MD* (1994) Roberta Bondar MD PhD (1998) Gustave Gingras MD* (1998) John Bradley MD* (2001) Phil Gold MD PhD (2010) Henri Breault MD* (1997) Richard G. Goldbloom MD (2017) G. Malcolm Brown PhD* (2000) Jean Gray MD (2020) John Symonds Lyon Browne MD PhD* (1994) Wilfred Grenfell MD* (1997) Alan Burton PhD* (2010) Gordon Guyatt MD (2016) C H G. Brock Chisholm MD (2019) Vladimir Hachinski MD (2018) Harvey Max Chochnov, MD PhD (2020) Antoine Hakim MD PhD (2013) Bruce Chown MD* (1995) Justice Emmett Hall* (2017) Michel Chrétien MD (2017) Judith G. Hall MD (2015) William A. Cochrane MD* (2010) Michael R. Hayden MD PhD (2017) May Cohen MD (2016) Donald O. -
Miller, Hugh Edinburgh
THE GEOLOGICAL CURATOR VOLUME 10, NO. 7 HUGH MILLER CONTENTS EDITORIAL by Matthew Parkes ............................................................................................................................ 284 THE MUSEUMS OF A LOCAL, NATIONAL AND SUPRANATIONAL HERO: HUGH MILLER’S COLLECTIONS OVER THE DECADES by M.A. Taylor and L.I. Anderson .................................................................................................. 285 Volume 10 Number 7 THE APPEAL CIRCULAR FOR THE PURCHASE OF HUGH MILLER'S COLLECTION, 1858 by M.A. Taylor and L.I. Anderson .................................................................................................. 369 GUIDE TO THE HUGH MILLER COLLECTION IN THE ROYAL SCOTTISH MUSEUM, EDINBURGH, c. 1920 by Benjamin N. Peach, Ramsay H. Traquair, Michael A. Taylor and Lyall I. Anderson .................... 375 THE FIRST KNOWN STEREOPHOTOGRAPHS OF HUGH MILLER'S COTTAGE AND THE BUILDING OF THE HUGH MILLER MONUMENT, CROMARTY, 1859 by M. A. Taylor and A. D. Morrison-Low ..................................................................................... 429 J.G. GOODCHILD'S GUIDE TO THE GEOLOGICAL COLLECTIONS IN THE HUGH MILLER COTTAGE, CROMARTY OF 1902 by J.G. Goodchild, M.A. Taylor and L.I. Anderson ........................................................................ 447 HUGH MILLER AND THE GRAVESTONE, 1843-4 by Sara Stevenson ............................................................................................................................ 455 HUGH MILLER GEOLOGICAL CURATORS’ -
ALUMNI NEWS Issue 28 February 2019 for Alumni and Friends
ALUMNI NEWS Issue 28 February 2019 for Alumni and Friends EARTH SCIENCES Contents MESSAGE FROM THE CHAIR NEW FACULTY AND STAFF APPOINTMENTS MELISSA ANDERSON Melissa Anderson is an economic geologist who began her appointment as Assistant Professor in the Department in August, 2018, following the completion of her PhD at the University of Ottawa and the GEOMAR Helmholtz Centre for Ocean Research Kiel (Germany) under the supervision of Mark Hannington (PhD 1989). After growing up on the land-locked prairies, Melissa wanted a change of scenery and her attention turned towards deep-sea research. Her work focuses on understanding the relationships between tectonics, volcanism, and ore formation in subduction-zone settings in the western Pacific. In particular, she tests the hypothesis that subduction- related tectonic complexities, such as terrane collisions, asymmetrical hinge roll-back, or pre-existing structures, directly influence the location, size, and composition of seafloor massive sulfide deposits. Given the scale of this problem, Melissa draws on a diverse set of field-based and systems will be an important focus of this work, with an analytical approaches, involving international seagoing emphasis on comparing the structural elements of world- research expeditions, innovative approaches to remote- class mineral districts with modern arc-backarc settings. predictive seafloor geological mapping, and integrated New research is also needed to better understand the origins petrology, trace element geochemistry, stable and radiogenic of giant ore deposits found on land for which there are no isotopes, and alteration studies. Her long-term research focus modern analogs; are large deposits waiting to be discovered will be on the transfer of modern seafloor research to the in unexplored settings of the modern oceans, or do geological development and enhancement of genetic and exploration processes operate in a fundamentally different way today? models on land. -
Liste Des Écoles Et Des Conseils Qui Utilisent Le Sgérn - 24 Juin 2021
Liste des écoles et des conseils qui utilisent le SGéRN - 24 juin 2021 Conseil École Algoma DSB ADSB Virtual Secondary School Algoma DSB Algoma Education Connection Algoma DSB Bawating Collegiate And VS - CLOSED Algoma DSB Central Algoma Secondary School Algoma DSB Central Algoma SS Adult Learning Centre Algoma DSB Chapleau High School Algoma DSB Elliot Lake Secondary School Algoma DSB Hornepayne High School Algoma DSB Korah Collegiate And Vocational School Algoma DSB Michipicoten High School Algoma DSB North Shore Adolescent Education School Algoma DSB North Shore Adult Education School Algoma DSB Sault Ste Marie Adult Learning Centre Algoma DSB Sir James Dunn C And VS - CLOSED Algoma DSB Superior Heights C and VS Algoma DSB W C Eaket Secondary School Algoma DSB White Pines Collegiate And Vocational School Avon Maitland DSB Avon Maitland District E-Learning Centre Avon Maitland DSB Avon Maitland DSB Summer School Avon Maitland DSB Bluewater SS - CLOSED Avon Maitland DSB Central Huron Adult Learning NS - CLOSED Avon Maitland DSB Central Huron Secondary School Avon Maitland DSB Dublin School - CLOSED Avon Maitland DSB Exeter Ctr For Employment And Learning NS - CLOSED Avon Maitland DSB F E Madill Secondary School Avon Maitland DSB Goderich District Collegiate Institute Avon Maitland DSB Listowel Adult Learning Centre NS - CLOSED Avon Maitland DSB Listowel District Secondary School Avon Maitland DSB Milverton DHS - CLOSED Avon Maitland DSB Mitchell Adult Learning Centre NS - CLOSED Avon Maitland DSB Mitchell District High School Avon Maitland -
"An Arrow Aimed at the Heart" : the Vancouver Women's Caucus And
"AN ARROW AIMED AT THE HEART" THE VANCOUVER WOMEN'S CAUCUS AND THE ABORTION CAMPAIGN 1969-1971 by FRANCES JANE WASSERLEIN B.A. (Hons.), University of British Columbia, 1980 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF ARTS in the Department of History O Frances Jane Wasserlein SIMON FRASER UNIVERSITY July 1990 All rights reserved. This thesis may not be reproduced in whole or part, by photocopy or other means, without permission of the author. APPROVAL NAME: WASSERLEIN, Frances Jane DEGREE: Master of Arts (History) TITLE OF THESIS: "An Arrow Aimed at the Heart" The Vancouver Women's Caucus and the Abortion Campaign 1969-1971 EXAMINING COMMITTEE Chairperson: Professor David Ross. Professor Veronica strhg-~oag Senior Supervisor Professor of Historv - ,-- Professor?obin Fisher Professor of History . _ * -7 - Professor Arlene 'l&ar McLaren External Examiner Associate Professor, Sociology DATE APPROVED: June 8, 1990 PARTIAL COPYRIGHT LICENSE I hereby grant to Simon Fraser University the right to lend my thesis, project or extended essay (the title of which is shown below) to users of the Simon Fraser University Library, and to make partial or single copies only for such users or in response to a request from the library of any other university, or other educational institution, on its own behalf or for one of its users. I further agree that permission for multiple copying of this work for scholarly purposes may be granted by me or the Dean of Graduate Studies. It is understood that copying or publication of this work for financial gain shall not be allowed without my written permission.