Iii Silurian Fauna
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Cambrian Ordovician
Open File Report LXXVI the shale is also variously colored. Glauconite is generally abundant in the formation. The Eau Claire A Summary of the Stratigraphy of the increases in thickness southward in the Southern Peninsula of Michigan where it becomes much more Southern Peninsula of Michigan * dolomitic. by: The Dresbach sandstone is a fine to medium grained E. J. Baltrusaites, C. K. Clark, G. V. Cohee, R. P. Grant sandstone with well rounded and angular quartz grains. W. A. Kelly, K. K. Landes, G. D. Lindberg and R. B. Thin beds of argillaceous dolomite may occur locally in Newcombe of the Michigan Geological Society * the sandstone. It is about 100 feet thick in the Southern Peninsula of Michigan but is absent in Northern Indiana. The Franconia sandstone is a fine to medium grained Cambrian glauconitic and dolomitic sandstone. It is from 10 to 20 Cambrian rocks in the Southern Peninsula of Michigan feet thick where present in the Southern Peninsula. consist of sandstone, dolomite, and some shale. These * See last page rocks, Lake Superior sandstone, which are of Upper Cambrian age overlie pre-Cambrian rocks and are The Trempealeau is predominantly a buff to light brown divided into the Jacobsville sandstone overlain by the dolomite with a minor amount of sandy, glauconitic Munising. The Munising sandstone at the north is dolomite and dolomitic shale in the basal part. Zones of divided southward into the following formations in sandy dolomite are in the Trempealeau in addition to the ascending order: Mount Simon, Eau Claire, Dresbach basal part. A small amount of chert may be found in and Franconia sandstones overlain by the Trampealeau various places in the formation. -
University of Copenhagen
Organ system development in recent lecithotrophic brachiopod larvae Altenburger, Andreas; Martinez, Pedro; Wanninger, Andreas Wilhelm Georg Published in: Geological Society of Australia. Abstracts Series Publication date: 2010 Document version Publisher's PDF, also known as Version of record Citation for published version (APA): Altenburger, A., Martinez, P., & Wanninger, A. W. G. (2010). Organ system development in recent lecithotrophic brachiopod larvae. Geological Society of Australia. Abstracts Series, 3-3. http://www.deakin.edu.au/conferences/ibc/spaw2/uploads/files/6IBC_Program%20&%20Abstracts%20volume.p df Download date: 25. Sep. 2021 Geological Society of Australia ABSTRACTS Number 95 6th International Brachiopod Congress Melbourne, Australia 1-5 February 2010 Geological Society of Australia, Abstracts No. 95 6th International Brachiopod Congress, Melbourne, Australia, February 2010 Geological Society of Australia, Abstracts No. 95 6th International Brachiopod Congress, Melbourne, Australia, February 2010 Geological Society of Australia Abstracts Number 95 6th International Brachiopod Congress, Melbourne, Australia, 1‐5 February 2010 Editors: Guang R. Shi, Ian G. Percival, Roger R. Pierson & Elizabeth A. Weldon ISSN 0729 011X © Geological Society of Australia Incorporated 2010 Recommended citation for this volume: Shi, G.R., Percival, I.G., Pierson, R.R. & Weldon, E.A. (editors). Program & Abstracts, 6th International Brachiopod Congress, 1‐5 February 2010, Melbourne, Australia. Geological Society of Australia Abstracts No. 95. Example citation for papers in this volume: Weldon, E.A. & Shi, G.R., 2010. Brachiopods from the Broughton Formation: useful taxa for the provincial and global correlations of the Guadalupian of the southern Sydney Basin, eastern Australia. In: Program & Abstracts, 6th International Brachiopod Congress, 1‐5 February 2010, Melbourne, Australia; Geological Society of Australia Abstracts 95, 122. -
A New Species of Conchicolites (Cornulitida, Tentaculita) from the Wenlock of Gotland, Sweden
Estonian Journal of Earth Sciences, 2014, 63, 3, 181–185 doi: 10.3176/earth.2014.16 SHORT COMMUNICATION A new species of Conchicolites (Cornulitida, Tentaculita) from the Wenlock of Gotland, Sweden Olev Vinna, Emilia Jarochowskab and Axel Munneckeb a Department of Geology, University of Tartu, Ravila 14A, 50411 Tartu, Estonia; [email protected] b GeoZentrum Nordbayern, Fachgruppe Paläoumwelt, Universität Erlangen-Nürnberg, Loewenichstr. 28, 91054 Erlangen, Germany Received 2 June 2014, accepted 4 August 2014 Abstract. A new cornulitid species, Conchicolites crispisulcans sp. nov., is described from the Wenlock of Gotland, Sweden. The undulating edge of C. crispisulcans sp. nov. peristomes is unique among the species of Conchicolites. This undulating peristome edge may reflect the position of setae at the tube aperture. The presence of the undulating peristome edge supports the hypothesis that cornulitids had setae and were probably related to brachiopods. Key words: tubeworms, tentaculitoids, cornulitids, Silurian, Baltica. INTRODUCTION Four genera of cornulitids have been assigned to Cornulitidae: Cornulites Schlotheim, 1820, Conchicolites Cornulitids belong to encrusting tentaculitoid tubeworms Nicholson, 1872a, Cornulitella (Nicholson 1872b) and and are presumably ancestors of free-living tentaculitids Kolihaia Prantl, 1944 (Fisher 1962). The taxonomy (Vinn & Mutvei 2009). They have a stratigraphic range of Wenlock cornulitids of Gotland (Sweden) is poorly from the Middle Ordovician to the Late Carboniferous studied, mostly due to their minor stratigraphical (Vinn 2010). Cornulitid tubeworms are found only in importance. normal marine sediments (Vinn 2010), and in this respect The aim of the paper is to: (1) systematically they differ from their descendants, microconchids, which describe a new species of cornulitids from the Wenlock lived in waters of various salinities (e.g., Zatoń et al. -
University of Michigan University Library
CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN VOL.XIX, No. 3, pp. 23-36 (7 pls.) JULY 17, 1964 CORALS OF THE TRAVERSE GROUP OF MICHIGAN PART XII, THE SMALL-CELLED SPECIES OF FAVOSITES AND EMMONSIA BY ERWIN C. STUMM and JOHN H. TYLER MUSEUM OF PALEONTOLOGY THE UNIVERSITY OF MICHIGAN ANN ARBOR, MICHIGAN CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY Director: LEWIS B. KELLUM The series of contributions from the Museum of Paleontology is a medium for the publication of papers based chiefly upon the collections in the Museum. When the number of pages issued is sufficient to make a volume, a title page and a table of contents will be sent to libraries on the mailing list, and to individuals upon request. A list of the separate papers may also be obtained. Correspondence should be directed to the Museum of Paleontology, The University of Michigan, Ann Arbor, Michigan. VOLS.11-XVIII. Parts of volumes may be obtained if available. VOLUMEXIX 1. Silicified Trilobites from the Devonian Jeffersonville Limestone at the Falls of the Ohio, by Erwin C. Stumm. Pages 1-14, with 3 plates. 2. Two Gastropods from the Lower Cretaceous (Albian) of Coahuila, Mexico, by Lewis B. Kellum and Kenneth E. Appelt. Pages 14-22. 3. Corals of the Traverse Group of Michigan, Part XII, The Small-celled Species of Favosites and Emmonsia, by Erwin C. Stumm and John H. Tyler. Pages 23-36, with 7 plates. VOL. XIX, NO.3, pp. 23-36 (7 pls.) JULY 17, 1964 CORALS OF THE TRAVERSE GROUP OF MICHIGAN PART XII, THE SMALL-CELLED SPECIES OF FAVOSZTES AND EMMONSIA1 BY ERWIN C. -
The Case of the Diminutive Trilobite Flexicalymene Retrorsa Minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati Region
EVOLUTION & DEVELOPMENT 9:5, 483–498 (2007) Evaluating paedomorphic heterochrony in trilobites: the case of the diminutive trilobite Flexicalymene retrorsa minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati region Brenda R. Hundaa,Ã and Nigel C. Hughesb aCincinnati Museum Center, 1301 Western Avenue, Cincinnati, OH 45203, USA bDepartment of Earth Sciences, University of California, Riverside, CA 92521, USA ÃAuthor for correspondence (email: [email protected]) SUMMARY Flexicalymene retrorsa minuens from the upper- rate of progress along a common ontogenetic trajectory with most 3 m of the Waynesville Formation of the Cincinnatian respect to size, coupled with growth cessation at a small size, Series (Upper Ordovician) of North America lived ‘‘sequential’’ progenesis, or non-uniform changes in the rate of approximately 445 Ma and exhibited marked reduction in progress along a shared ontogenetic trajectory with respect to maximum size relative to its stratigraphically subjacent sister size, can also be rejected. Rather, differences between these subspecies, Flexicalymene retrorsa retrorsa. Phylogenetic subspecies are more consistent with localized changes in analysis is consistent with the notion that F. retrorsa retrorsa rates of character development than with a global hetero- was the ancestor of F. retrorsa minuens. F. retrorsa minuens chronic modification of the ancestral ontogeny. The evolution has been claimed to differ from F. retrorsa retrorsa ‘‘in size of F. retrorsa minuens from F. retrorsa retrorsa was largely alone,’’ and thus presents a plausible example of global dominated by modifications of the development of characters paedomorphic evolution in trilobites. Despite strong similarity already evident in the ancestral ontogeny, not by the origin of in the overall form of the two subspecies, F. -
Silurian Rugose Corals of the Central and Southwest Great Basin
Silurian Rugose Corals of the Central and Southwest Great Basin GEOLOGICAL SURVEY PROFESSIONAL PAPER 777 Silurian Rugose Corals of the Central and Southwest Great Basin By CHARLES W. MERRIAM GEOLOGICAL SURVEY PROFESSIONAL PAPER 777 A stratigraphic-paleontologic investigation of rugose corals as aids in age detern2ination and correlation of Silurian rocks of the Great Basin with those of other regions UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1973 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 73-600082 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402- Price $2.15 (paper cover) Stock Number 2401-00363 CONTENTS Page Page Abstract--------------------------------------------------------------------------- 1 Systematic and descriptive palaeontology-Continued Introduction -------------------------------------------------------------------- 1 Family Streptelasmatidae-Continued Purpose and scope of investigation------------------------------- 1 Dalmanophyllum ------------------------------------------------- 32 History of investigation ---------------------------------------------- 1 Family Stauriidae ------------------------------------------------------- 32 Methods of study------------------------------------------------------- 2 Cyathoph y llo ides-------------------------------------------------- 32 Acknowledgments------------------------------------------------------- 4 Palaeophyllum -
Contents List of Illustrations LETTER OF
STATE OF MICHIGAN Plate IV. A. Horizontal and oblique lamination, Sylvania MICHIGAN GEOLOGICAL AND BIOLOGICAL SURVEY Sandstone......................................................................27 Plate IV. B. Stratification and lamination, in sand dune, Dune Publication 2. Geological Series 1. Park, Ind.........................................................................28 THE MONROE FORMATION OF SOUTHERN Plate V. Sand grains, enlarged 14½ times ............................31 MICHIGAN AND ADJOINING REGIONS Plate VI. Desert sand grains, enlarged 14½ times ................31 by Plate VII. Sylvania and St. Peter sand grains, enlarged 14½ A. W. Grabau and W. H. Sherzer times. .............................................................................32 PUBLISHED AS PART OF THE ANNUAL REPORT OF THE BOARD OF GEOLOGICAL AND BIOLOGICAL SURVEY FOR Figures 1909. Figure 1. Map showing distribution of Sylvania Sandstone. 25 LANSING, MICHIGAN WYNKOOP HALLENBECK CRAWFORD CO., STATE Figure 2. Cross bedding in Sylvania sandstone ....................27 PRINTERS Figure 3. Cross bedding on east wall of Toll’s Pit quarry ......28 1910 Figure 4. Cross bedding shown on south wall of Toll’s Pit quarry.............................................................................28 Contents Figure 5. Cross bedding on south wall of Toll’s Pit quarry in Sylvania sandstone. .......................................................28 Letter of Transmittal. ......................................................... 1 Figure 6. Cross bedding shown on south wall -
The Viruan (Middle Ordovician) of Öland
The Viruan (Middle Ordovician) of Öland By Valdar Jaanusson ABSTRACT.-The stratigraphy and lithology of the Viruan (Middle Ordovician) Iimestones of the bed-rock of Öland are described based on three bares and on field work in the outcrop area. A combined litho- and bio-stratigraphic classification (termed topo-stratigraphic) is introduced for the described sequence. The names of the Estonian stages (Aserian, Lasnamägian, Uhakuan, and Kukrusean) are used as chrono-stratigraphic references instead of the previous Swedish names of the units of stage category (Platyurus, Schroeteri, Crassicauda, and Ludibundus, re spectivcly). New topo-stratigraphic divisions are Segerstad Limestone (of Aserian age), Skärlöv, Seby, and Folkeslunda Limestones (of Lasnamägian age), Furudal, Källa, and Persnäs Lime stones (of Uhakuan age), and Dalby Limestone (of Kukrusean age in the bed-rock of Öland). The Aserian Lasnamägian topo-stratigraphic divisions have the same lithological characteris and tics throughout Öland. The Uhakuan beds are developed as calcilutites (Furudal Limestone) on southern Öland continuing as a tongue (Källa Limestone) on northern Öland. The middle and upper part of the Uhakuan beds of northern Öland consist of calcarenites (Persnäs Limestone) lithologically indistiguishable from the Kukrusean Dalby Limestone which forms the bed-rock only on northern Öland. Within the Segerstad Limestone two zones are distinguished (z. of Angelinoceras latum and z. of Illaenus planifrons).H ouvr ' s zones of Lituites discors, L. lituus, and L. perfectus are of Lasna mägian age, and their stratigraphic position and fauna! characteristics are described. Contents Introduction . 207 Methods .............. 209 Classification of the Viruan rocks of Öland 2I2 Historical survey . 2I9 Taxonornie and nomenclatural notes 22I Viruan rocks of northern Öland . -
Paleozoic Rocks Antelope Valley Eureka and Nye Counties Nevada
:It k 'I! ' Paleozoic Rocks Antelope Valley Eureka and Nye Counties Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 423 Paleozoic Rocks of Antelope Valley Eureka and Nye Counties Nevada By CHARLES W. MERRIAM GEOLOGICAL SURVEY PROFESSIONAL PAPER 423 P,rinciples of stratigraphy applied in descriptive study of the Central Great Basin Paleozoic column UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1963 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.C. CONTENTS Page Page Silurian system ____________________________________ _ Abstract------------------------------------------- 1 36 Introduction. _____________________________________ _ 2 General features-------------------------------- 36 Geologic setting ______________ ------ ___ --------- 2 Roberts Mountains formation ___________________ _ 37 History of investigation ________________________ _ 5 Lone Mountain dolomite ______ ---_-------------- 39 Purpose and scope _____________ -- ______ ------ --- 6 Devonian system ______________ ---- __ - _- ___ - _------- 41 Acknowledgments ______________________________ _ 6 General features _____________ - ___________ -_----- 41 Geologic structure as related to stratigraphy __________ _ 6 Western Helderberg age limestones of the Monitor Paleontologic studies ______ ..:. _______ ~ ________________ _ 9 · Range ______ - _.- ___ --------------------------- 42 The Paleozoic column at Antelope Valley -
Upper Ordovician and Silurian Stratigraphy in Sequatchie Valley and Parts of the Adjacent Valley and Ridge, Tennessee
Upper Ordovician and Silurian Stratigraphy in Sequatchie Valley and Parts of the Adjacent Valley and Ridge, Tennessee GEOLOGICAL SURVEY PROFESSIONAL PAPER 996 Prepared in cooperation with the Tennessee Division of Geology Upper Ordovician and Silurian Stratigraphy in Sequatchie Valley and Parts of the Adjacent Valley and Ridge, Tennessee By ROBERT C. MILICI and HELMUTH WEDOW, JR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 996 Prepared in cooperation with the Tennessee Division of Geology UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1977 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Milici, Robert C 1931- Upper Ordovician and Silurian stratigraphy in Sequatchie Valley and parts of the adjacent valley and ridge, Tennessee. (Geological Survey professional paper; 996) Bibliography: p. Supt. of Docs. no.: I 19.16:996 1. Geology, Stratigraphic--Ordovician. 2. Geology, Stratigraphic--Silurian. 3. Geology--Tennessee--Sequatchie Valley. 4. Geology--Tennessee--Chattanooga region. I. Wedow, Helmuth, 1917- joint author. II: Title. Upper Ordovician and Silurian stratigraphy in Sequatchie Valley .... III. Series: United States. Geological Survey. Professional paper; 996. QE660.M54 551.7'310976877 76-608170 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-03002·1 CONTENTS Page Abstract 1 Introduction ----------------------------------------------------------------------------- -
United States
DEPARTMENT OF THE INTERIOR BULLETIN OF THE UNITED STATES ISTo. 146 WASHINGTON GOVERNMENT Pit IN TING OFFICE 189C UNITED STATES GEOLOGICAL SURVEY CHAKLES D. WALCOTT, DI11ECTOK BIBLIOGRAPHY AND INDEX NORTH AMEEICAN GEOLOGY, PALEONTOLOGY, PETEOLOGT, AND MINERALOGY THE YEA.R 1895 FEED BOUGHTON WEEKS WASHINGTON Cr O V E U N M K N T P K 1 N T I N G OFFICE 1890 CONTENTS. Page. Letter of trail smittal...... ....................... .......................... 7 Introduction.............'................................................... 9 List of publications examined............................................... 11 Classified key to tlio index .......................................... ........ 15 Bibliography ............................................................... 21 Index....................................................................... 89 LETTER OF TRANSMITTAL DEPARTMENT OF THE INTEEIOE, UNITED STATES GEOLOGICAL SURVEY, DIVISION OF GEOLOGY, Washington, D. 0., June 23, 1896. SIR: I have the honor to transmit herewith the manuscript of a Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy for the year 1895, and to request that it be published as a bulletin of the Survey. Very respectfully, F. B. WEEKS. Hon. CHARLES D. WALCOTT, Director United States Geological Survey. 1 BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINER ALOGY FOR THE YEAR 1895. By FRED BOUGHTON WEEKS. INTRODUCTION. The present work comprises a record of publications on North Ameri can geology, paleontology, petrology, and mineralogy for the year 1895. It is planned on the same lines as the previous bulletins (Nos. 130 and 135), excepting that abstracts appearing in regular periodicals have been omitted in this volume. Bibliography. The bibliography consists of full titles of separate papers, classified by authors, an abbreviated reference to the publica tion in which the paper is printed, and a brief summary of the con tents, each paper being numbered for index reference. -
Distribution of the Middle Ordovician Copenhagen Formation and Its Trilobites in Nevada
Distribution of the Middle Ordovician Copenhagen Formation and its Trilobites in Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 749 Distribution of the Middle Ordovician Copenhagen Formation and its Trilobites in Nevada By REUBEN JAMES ROSS, JR., and FREDERICK C. SHAW GEOLOGICAL SURVEY PROFESSIONAL PAPER 749 Descriptions of Middle Ordovician trilobites belonging to 21 genera contribute to correlations between similar strata in Nevada) California) and 0 klahoma UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1972 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. lVIOR TON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 78-190301 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 70 cents (paper cover) Stock Number 2401-2109 CONTENTS Page Page Abstract ______________________________ -------------------------------------------------- 1 Descriptions of trilobites __________________________________________________ _ 14 Introduction ________________________________________________________________________ _ 1 Genus T1·iarth1·us Green, 1832 .... ------------------------------ 14 Previous investigations _____________________________________________ _ 1 Genus Carrickia Tripp, 1965 ____________________________________ _ 14 Acknowledgments-------------------------------------------------------· 1 Genus Hypodicranotus Whittington, 1952 _____________ _ 15 Geographic occurrences of the Copenhagen Genus Robergia Wiman, 1905·----------------------------------