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Instituto De Geociências Revisão Sistemática E
UNIVERSIDADE DE SÃO PAULO INSTITUTO DE GEOCIÊNCIAS REVISÃO SISTEMÁTICA E PALEOBIOGEOGRÁFICA DE TRILOBITAS PHACOPIDA (HOMALONOTIDAE E CALMONIIDAE) DO DEVONIANO DAS BACIAS DO PARNAÍBA E AMAZONAS, BRASIL Felipe van Enck Meira Tese apresentada ao Programa de Pós- Graduação em Geoquímica e Geotectônica do Instituto de Geociências da Universidade de São Paulo, como parte dos requisitos para a obtenção do título de doutor. Orientadora: Prof. Dra. Juliana de Moraes Leme TESE DE DOUTORAMENTO Programa de Pós-graduação em Geoquímica e Geotectônica São Paulo 2016 “Kites rise highest against the wind - not with it.” - Winston Churchill Agradecimentos Agradeço a Deus, por sempre iluminar o caminho durante esses anos de altos e baixos do Doutorado. Agradeço a Ele também por enviar dois verdadeiros anjos da guarda à minha vida – minha esposa Angela Faleiros van Enck Meira e meu filho, Thomas Faleiros van Enck Meira. Agradeço a meus pais, José Carlos e Sylvia, e à minha irmã, Patrícia, pelo apoio durante a jornada, ainda que à distância, por vezes. Sou grato aos meus sogros, Jair e Lucia, que sempre foram como verdadeiros pais e conselheiros. À FAPESP (Processo n° 2012/07075-3), pelo suporte financeiro, sem o qual o Doutorado não seria viável. À minha orientadora, Drª. Juliana de Moraes Leme, pela orientação, discussões e esclarecimentos pertinentes ao projeto. Ao Doutorando Fabio Carbonaro e ao Dr. Renato Ghilardi (UNESP-Bauru), pela parceria e por discussões importantes na realização do trabalho. À Drª. Niède Guidon (FUMDHAM), pelo empréstimo de fósseis da região de São João Vermelho (Piauí), estudados aqui. Sou grato às seguintes pessoas, por permitirem meu acesso às instituições para visita de acervos, e por sua disponibilidade, atenção e ajuda durante minha permanência: Bushra Hussaini (AMNH), Flávia Alessandra Figueiredo, Mônica de Medina Coeli, Dr. -
A New Classification of the Xanthoidea Sensu Lato
Contributions to Zoology, 75 (1/2) 23-73 (2006) A new classifi cation of the Xanthoidea sensu lato (Crustacea: Decapoda: Brachyura) based on phylogenetic analysis and traditional systematics and evaluation of all fossil Xanthoidea sensu lato Hiroaki Karasawa1, Carrie E. Schweitzer2 1Mizunami Fossil Museum, Yamanouchi, Akeyo, Mizunami, Gifu 509-6132, Japan, e-mail: GHA06103@nifty. com; 2Department of Geology, Kent State University Stark Campus, 6000 Frank Ave. NW, North Canton, Ohio 44720, USA, e-mail: [email protected] Key words: Crustacea, Decapoda, Brachyura, Xanthoidea, Portunidae, systematics, phylogeny Abstract Family Pilumnidae ............................................................. 47 Family Pseudorhombilidae ............................................... 49 A phylogenetic analysis was conducted including representatives Family Trapeziidae ............................................................. 49 from all recognized extant and extinct families of the Xanthoidea Family Xanthidae ............................................................... 50 sensu lato, resulting in one new family, Hypothalassiidae. Four Superfamily Xanthoidea incertae sedis ............................... 50 xanthoid families are elevated to superfamily status, resulting in Superfamily Eriphioidea ......................................................... 51 Carpilioidea, Pilumnoidoidea, Eriphioidea, Progeryonoidea, and Family Platyxanthidae ....................................................... 52 Goneplacoidea, and numerous subfamilies are elevated -
How to Become a Crab: Phenotypic Constraints on a Recurring Body Plan
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 25 December 2020 doi:10.20944/preprints202012.0664.v1 How to become a crab: Phenotypic constraints on a recurring body plan Joanna M. Wolfe1*, Javier Luque1,2,3, Heather D. Bracken-Grissom4 1 Museum of Comparative Zoology and Department of Organismic & Evolutionary Biology, Harvard University, 26 Oxford St, Cambridge, MA 02138, USA 2 Smithsonian Tropical Research Institute, Balboa–Ancon, 0843–03092, Panama, Panama 3 Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06520-8109, USA 4 Institute of Environment and Department of Biological Sciences, Florida International University, Biscayne Bay Campus, 3000 NE 151 Street, North Miami, FL 33181, USA * E-mail: [email protected] Summary: A fundamental question in biology is whether phenotypes can be predicted by ecological or genomic rules. For over 140 years, convergent evolution of the crab-like body plan (with a wide and flattened shape, and a bent abdomen) at least five times in decapod crustaceans has been known as ‘carcinization’. The repeated loss of this body plan has been identified as ‘decarcinization’. We offer phylogenetic strategies to include poorly known groups, and direct evidence from fossils, that will resolve the pattern of crab evolution and the degree of phenotypic variation within crabs. Proposed ecological advantages of the crab body are summarized into a hypothesis of phenotypic integration suggesting correlated evolution of the carapace shape and abdomen. Our premise provides fertile ground for future studies of the genomic and developmental basis, and the predictability, of the crab-like body form. Keywords: Crustacea, Anomura, Brachyura, Carcinization, Phylogeny, Convergent evolution, Morphological integration 1 © 2020 by the author(s). -
55819057.Pdf
GEOLOGICA BELGICA MEETING 2006 www.ulg.ac.be/geolsed/geologie www.sciencesnaturelles.be/geology/products/geolbelgica/ 2nd BELGIAN GEOLOGICAL CONGRESS LIEGE, BELGIUM, 7 – 8 September 2006 PROGRAM Thursday September 7th 8H00-9H00: WELCOME OF PARTICIPANTS 9H00-9H10: Opening of the meeting: the word of the president (D. Laduron) CLIMATE AND ENVIRONMENTAL GEOLOGY 9H10-9H30: Yans J., Dupuis C. Dating of the weathering processes in the Ardenne area (Belgium) 9H30-9H50: Quinif Y. U/Th dating of a near water-table speleothem in the cave of Han-sur-Lesse - Implications on geodynamics evolution of Ardenne 9H50-10H10: Petermans T., Rosset P., Foriers E., Camelbeeck T. Evaluation and mapping of local site effects and seismic hazard: case studies in Mons Basin and Brussels region 10H10-10H30: Petit J., Taillez A., Verheyden S., Chou L., Mattielli N. First steps towards Cu and Zn isotope geochemistry in estuarine environments 10H30-10H50: COFFEE BREAK AND POSTER SESSION 10H50-11H10: Missiaen, P., Van Itterbeeck, J., Folie, A.,. Markevich, V.S., Van Damme,D., Dian-Yong, G., Smith, Th. The Subeng mammal site (Late Paleocene, China): evidence for a unique woodland on the dry Mongolian Plateau 11H10-11H30: De Vleeschouwer F., Van Vliët-Lanoé B., Fagel N., Richter T., Boës X., Gehrels M. High resolution petrography of impregnated peat columns containing tephras. Principle, applications and perspectives 11H30-11H50: Renson V., De Vleeschouwer F., Fagel N., Mattielli N., Nekrassoff S., Streel, M. Contribution of elemental and lead isotopes geochemistry to archeology in a Belgian peat bog (Hautes Fagnes) 11H50-12H10: De Batist M., Artemov Y., Beaubien S., Greinert J., Holzner C., Kipfer R., Lombardi S., McGinnis D., Naudts L., Schmale O., Schubert C., Van Rensbergen P., Zuppi G.M. -
Theuniversity Oftexasbulletin 3101 Plate XII 230 the University of Texas Bulletin PLATE XIII Figures— Page 1
TheUniversity of TexasBulletin No. 3101: January 1, 1931 Contributions to Geology, 1931 Bureau of Economic Geology J. A.Udden, Director E. H.Sellards, AssociateDirector PUBLISHED BY THE UNIVERSITY OF TEXAS AUSTIN Publications of The University of Texas Publications Committees GENERAL: Frederic Duncalp Mrs. C. M. Perry J. F.Dobie C. H. Slover J. L.Henderson G. W. Stumberg H. J. Muller A. P.Winston official: E. J. Mathews Killis Campbell C. F. Arrowood C. D.Simmons E. C.H.Bantel Bryant Smith The University publishes bulletins four times a month, so numbered that the first two digits of the number show the year of issue and thelast two the position in the yearly series. (For example, No. 3101 is the first bulletin of the year 1931.) These bulletins comprise the official publica- tions of the University, publications on humanistic and scientific subjects, and bulletins issued from time to time by various divisions of the University. The following bureaus and divisions distribute bulletins issuedby them; communications concerning bulletins in these fields should beaddressed toThe University of Texas,Austin,Texas,care of the bureau or division issuing the bulletin: Bureau of Business Research, Bureau of Economic Geology, Bureau of Engineering Research, Interscholastic League Bureau., andDivision of Extension. Communications concerning all other publications of the University should be addressed toUniversity Publications,TheUniversity of Texas,Austin. Additional copies of this publication may be procured from the Bureau of Economic Geology, The University of Texas, Austin, Texas, at $1.00 per copy The University of Texas Bulletin No. 3101: January 1, 1931 Contributions to Geology, 1931 Bureau of Economic Geology J. -
The Larval Stages of Trilobites
THE LARVAL STAGES OF TRILOBITES. CHARLES E. BEECHER, New Haven, Conn. [From The American Geologist, Vol. XVI, September, 1895.] 166 The American Geologist. September, 1895 THE LARVAL STAGES OF TRILOBITES. By CHARLES E. BEECHEE, New Haven, Conn. (Plates VIII-X.) CONTENTS. PAGE I. Introduction 166 II. The protaspis 167 III. Review of larval stages of trilobites 170 IV. Analysis of variations in trilobite larvae 177 V. Antiquity of the trilobites 181 "VI. Restoration of the protaspis 182 "VII. The crustacean nauplius 186 VIII. Summary 190 IX. References 191 X Explanation of plates 193 I. INTRODUCTION. It is now generally known that the youngest stages of trilobites found as fossils are minute ovate or discoid bodies, not more than one millimetre in length, in which the head por tion greatly predominates. Altogether they present very little likeness to the adult form, to which, however, they are trace able through a longer or shorter series of modifications. Since Barrande2 first demonstrated the metamorphoses of trilobites, in 1849, similar observations have been made upon a number of different genera by Ford,22 Walcott,34':*>':t6 Mat thew,28- 27' 28 Salter,32 Callaway,11' and the writer.4.5-7 The general facts in the ontogeny have thus become well estab lished and the main features of the larval form are fairly well understood. Before the recognition of the progressive transformation undergone by trilobites in their development, it was the cus tom to apply a name to each variation in the number of tho racic segments and in other features of the test. -
The Formation of Authigenic Deposits During Paleogene Warm Climatic
Banerjee et al. Journal of Palaeogeography (2020) 9:27 https://doi.org/10.1186/s42501-020-00076-8 Journal of Palaeogeography REVIEW Open Access The formation of authigenic deposits during Paleogene warm climatic intervals: a review Santanu Banerjee1* , Tathagata Roy Choudhury1, Pratul Kumar Saraswati1 and Sonal Khanolkar2 Abstract Although Paleogene warm climatic intervals have received considerable attention for atmospheric and oceanographic changes, the authigenic mineralization associated with these time spans remains overlooked. An extensive review of the literature reveals a close correspondence between the high abundance of glauconite and warm climatic intervals during the Paleogene period. The abundance of phosphorite, ironstone, lignite and black shale deposits reveals similar trends. Although investigated thoroughly, the origin of these authigenic deposits is never understood in the background of Paleogene warming climatic intervals. A combination of factors like warm seawater, hypoxic shelf, low rate of sedimentation, and enhanced rate of continental weathering facilitated the glauconitization. The last factor caused the excess supply of nutrients, including Fe, Si, K, Mg and Al through the rivers, the cations needed for the formation of glauconite. The excessive inflow of nutrient-rich freshwater into the shallow seas further ensured high organic productivity and stratification in shallow shelves, causing hypoxia. The consequent rapid rise in sea-level during the warm periods created extensive low-relief shallow marine shelves starved in sediments. Oxygen-deficiency in the shallow marine environment facilitated the fixation of Fe into the glauconite structure. The inflow of nutrient-rich water during the warm climatic intervals facilitated the formation of phosphorite, ironstone, and organic-matter-rich sedimentary deposits as well. -
Tesis De Grado Valentina Blandon 201511522
Reconstrucción científica del Macizo Devónico de Floresta, ilustrada en un diorama. Por Valentina Blandón Hurtado 201511522 Director Dr. Leslie F. Noè Uniandes Co director Dr. Jaime Reyes Abril S.G.C. Universidad de los Andes Facultad de Ciencias Departamento de Geociencias Bogotá, Colombia Noviembre 2019 Leslie F. Noè Jaime A. Reyes Valentina Blandón Hurtado II Tabla de contenido Dedicación .................................................................................................................................V Agradecimiento ..........................................................................................................................V Resumen ...................................................................................................................................VI Abstract ...................................................................................................................................VII Introducción ................................................................................................................................1 Metodología y Materiales ...........................................................................................................5 Resultados y Discusiones ...........................................................................................................7 Devónico Inferior – Formación El Tibet ....................................................................................7 Descripción organismos Formación El Tibet .........................................................................8 -
Late Silurian Trilobite Palaeobiology And
LATE SILURIAN TRILOBITE PALAEOBIOLOGY AND BIODIVERSITY by ANDREW JAMES STOREY A thesis submitted to the University of Birmingham for the degree of DOCTOR OF PHILOSOPHY School of Geography, Earth and Environmental Sciences University of Birmingham February 2012 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. ABSTRACT Trilobites from the Ludlow and Přídolí of England and Wales are described. A total of 15 families; 36 genera and 53 species are documented herein, including a new genus and seventeen new species; fourteen of which remain under open nomenclature. Most of the trilobites in the British late Silurian are restricted to the shelf, and predominantly occur in the Elton, Bringewood, Leintwardine, and Whitcliffe groups of Wales and the Welsh Borderland. The Elton to Whitcliffe groups represent a shallowing upwards sequence overall; each is characterised by a distinct lithofacies and fauna. The trilobites and brachiopods of the Coldwell Formation of the Lake District Basin are documented, and are comparable with faunas in the Swedish Colonus Shale and the Mottled Mudstones of North Wales. Ludlow trilobite associations, containing commonly co-occurring trilobite taxa, are defined for each palaeoenvironment. -
Early Eocene Evolution of Carbonate Depositional Environments
2017 | 70/1 | 11–25 | 5 Figs. | 2 Pls. | www.geologia-croatica.hr Journal of the Croatian Geological Survey and the Croatian Geological Society Early Eocene evolution of carbonate depositional environments recorded in the Čikola Canyon (North Dalmatian Foreland Basin, Croatia) Jelena Španiček1, Vlasta Ćosović1, Ervin Mrinjek1 and Igor Vlahović2 1 University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102a, HR-10000 Zagreb, Croatia; (corresponding author: [email protected]) 2 University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Department of Geology and Geological Engineering, Pierottijeva 6, HR-10000 Zagreb, Croatia doi: 10.4154/gc.2017.05 Abstract Article history: The stratigraphic succession in the Čikola Canyon (part of the North Dalmatian Foreland Basin) Manuscript received November 08, 2016 was studied in detail to describe both the sedimentological characteristics and fossil assem- Revised manuscript accepted February 25, 2017 blages of the Lower Eocene deposits during the initial stage of the foreland basin formation. Available online February 28, 2017 The North Dalmatian Basin now represents a part of the Outer Dinarides, and was developed in front of the evolving Dinaric structures by tectonic deformation and marine transgression of an emerged and denuded Mesozoic Adriatic Carbonate Platform (AdCP). During the initial phase, a distal ramp of a foreland basin was formed, characterised by carbonate sedimenta- tion, lasting until the Middle Eocene. In a studied section more than 300 m thick, porcelaneous foraminifera, Alveolina, Orbitolites and complex miliolids (Idalina, Periloculina) prevail, associated with conical agglutinated forms, nummulitids and red algae. These samples belong to the SBZ 11–12 (Ypresian), according to occurrences of Alveolina decastroi, Alveolina cremae, Alveolina multicanalifera and Coskino- lina liburnica. -
Field Excursion the Silurian Usk Inlier
SOUTH WALES GEOLOGISTS ASSOCIATION FIELD EXCURSION THE SILURIAN USK INLIER Saturday 15 June 2019 Field Leader: Lesley Cherns (Cardiff University) 1 2 INTRODUCTION TO THE SILURIAN LIMESTONES OF THE USK INLIER The Usk inlier is a periclinal fold (dome) with N-S axis that exposes <650 m of Silurian rocks laid down on the south-eastern shelf of the Welsh Basin (Figs 1, 2). The shelly and calcareous succession includes a local equivalent of the early Silurian (Homerian) Much Wenlock Limestone of the Welsh Borderland, including small reefs. Soft calcareous shales (Coalbrookdale Formation, >245 m) dominated early Wenlock (Sheinwoodian) sedimentation on the Midland Platform while relative sea levels were high (Fig. 3). Late Wenlock (Mid-Late Homerian) sea level fall was accompanied by widespread deposition of shallow marine carbonate sediments across the eastern shelf (30-60 m), including patch reefs with diverse fossil biotas (Cramer et al. 2011a). The Usk area represents the southern extent of the reef belt. The main reef belt and largest reefs are along the limestone escarpment of Wenlock Edge (~30 m; Scoffin 1971), with smaller and scattered reefs in thicker limestone sequences across the platform interior towards Dudley (62 m) and Walsall (Ratcliffe and Thomas 1999; Cherns et al. 2006). At Dudley, a double-peaked positive stable C isotope excursion (Corfield et al. 1992) correlates with widely reported events at this time (Cramer et al. 2011b; Fig. 4). The ‘Usk Limestone’, a local lithological correlative of the Much Wenlock Limestone of Shropshire (as recognised already by Murchison in 1839), forms the top of the Wenlock Series. -
Legacy of the Locust—Dudley and Its Famous Trilobite Calymene Blumenbachii
LEGACY OF THE LOCUST—DUDLEY AND ITS FAMOUS TRILOBITE CALYMENE BLUMENBACHII DONALD G. MIKULIC AND JOANNE KLUESSENDORF Illinois State Geological Survey, Champaign, IL 61820, [email protected], and Weis Earth Science Museum, University of Wisconsin-Fox Valley, Menasha, Wisconsin 54952, [email protected] ABSTRACT—The trilobite Calymene blumenbachii from the Silurian at Dudley, England, had a fundamental role in the early study of this prominent group of extinct arthropods. Discovered during the mid-1700s, this was the first trilo- bite known from numerous complete and well-preserved fossils anywhere in the world. Commonly known as the Dudley Fossil or Dudley Locust, exceptional specimens of this trilobite became widely distributed in collections throughout Europe. As a result, they were central to the most influential trilobite papers of the time including those of Walch (1771) and Brongniart (1822). Many basic characteristics of the group, including their ability to enroll, were first established through the study of these fossils. In turn, this information provided the key evidence used to estab- lish the arthropod affinities of this group. During the late eighteenth century, all trilobites were commonly referred to as Dudley Fossils, and demonstrate the initial importance and prominence of this species. It became the standard of comparison in trilobite research, as well as the textbook example for these fossils. No other trilobite contributed as much to the early understanding of these ancient animals. The scientific prominence of Calymene blumenbachii derived from geologic and economic factors. The limestones at Dudley contained an exceptionally rich biota of well-preserved Silurian fossils, of which this trilobite was the most notable.