DOCSLIB.ORG

Revision of Some of Girty's Invertebrate Fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma Introduction by MACKENZIE GORDON, JR

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Revision of Some of Girty's Invertebrate Fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma Introduction by MACKENZIE GORDON, JR Revision of Some of Girty's Invertebrate Fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma Introduction By MACKENZIE GORDON, JR. Corals By WILLIAM J. SANDO Pelecypods By JOHN POJETA, JR. Gastropods By ELLIS L. YOCHELSON Trilobites By MACKENZIE GORDON, JR. Ostracodes By I. G. SOHN GEOLOGICAL SURVEY PROFESSIONAL PAPER 606-A, B, C, D, E, F Papers illustrating and describing certain of G. H. Girty' s invertebrate fossils from the Fayetteville Shale UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1969 UNITED STATES DEPARTMENT OF THE INTERIOR WALTER J. HICKEL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director Library of Congress catalog-card No. 70-650224 For sale by the Superintendent of Documents, U.S. Government Printing Office Washing.ton, D.C. 20402 CONTENTS [The letters in parentheses preceding the titles are those used to designate the chapters] Page (A) Introduction, by Mackenzie Gordon, Jr _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 (B) Corals, by William J. Sando__________________________________________________________________________________ 9 (C) Pelecypods, by John Pojeta, Jr _____ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 15 (D) Gastropods, by Ellis L. Yochelson----------------------------------------------------------------------------- 25 (E) Trilobites, by Mackenzie Gordon, Jr--------------------------------------~------------------------------------ 35 (F) Ostracodes, by I. G. Sohn _________________________________________ -.- ____________________________________ - _- -- 41 III - Revision of Some of Girty's Invertebrate Fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma-Introduction By MACKENZIE GORDON, JR. GEOLOGICAL SURVEY PROFESSIONAL PAPER 606-A Collecting localities and biostratigraphic background for G. H. Girty 's new species of invertebrates /rom the Fayetteville Shale CONTENTS Page Page Abstract .......................................... 1 Collecting localities................................. 3 Previous investigations ............................. 1 New species of invertebrate fossils from the Fayetteville Present study ..................................... 1 Shale other than those of Girty (1910)...... 5 Acknowledgments .................................. 2 Biostratigraphic considerations. 6 Types ............................................ 2 References cited . 6 Fayetteville Shale .................................. 2 Index............................................. 57 ILLUSTRATION PLATE 9. Map showing collecting localities for Girty's Fayetteville Shale fauna in northeastern Oklahoma and northwestern Arkansas ____________ In p·ocket. III REVISION OF SOME OF GIRTY'S INVERTEBRATE FOSSILS FROM THE FAYETTEVILLE SHALE (MISSISSIPPIAN) OF ARKANSAS AND OKLAHOMA-INTRODUCTION By MAcKENZIE GoRDoN, Jn. ABSTRACT Girty's 1910 paper described a large number of bryo­ J.n 1910, G. H. Girty published a paper on the fauna of the zoans, including eight new genera and subgenera. Bass­ Fayetteville Shale of northern Arkansas and northeastern ler (1941) published a short paper giving diagnoses of Oklahoma in which he described 110 new taxa of fossil inverte­ essential characters of all eight generic taxa, accom­ brates. He did not, however, designate any type specimens or divulge the localities at which •the fossils were collected, nor did panied by drawings made from Girty's thin sections. He he illustrate the species. The present study is designed to fill the cited the provenance for all of them merely as "Fayette­ gaps in information on some of these species and to bring them ville Shale. Vicinity of Fayetteville, Ark." as far as possible up to date and in line with the modern scheme of classification. PRESENT STUDY This report deals with the corals, pelecypods, _gastropods, trilobites, and ostracodes. It does not include the brachiopods The present study of Girty's material has been un­ and bryozoans. The study has been performed by specialists dertaken in order that illustrations of his types and of the U.S. Geological Survey who are contributing separate locality information omitted by him in the 1910 paper parts to the volume. This introductory part outlines the 'problem and the solutions be made available to the paleontologic profession and employed, lists Girty's collecting localities, and discusses the to the public in general. In addition, the selection of general stratigraphy of the Fayetteville Shale. Thirty-three of lectotypes by specialists in the several fossil groups Girty's collections came from the basal part of the formation, serves to establish Girty's species on a firmer basis and known by its ammonoid fauna to be of late Visean age. Two document the type localities where topotypes may be collections came from higher levels, one of them certainly from early Namurian equivalents. Three other collections that in­ secured. cluded important elements of Girty's type material are from the A breakdown of the 110 new taxa described by Girty Batesville Sandstone. from the Fayetteville Shale is shown in the following table. PREVIOUS INVESTIGATIONS New New New New In 1910, G. H. Girty published the first of several genera subgenera species varieties Totals Coraffi ___________________________ papers on the Late Mississippian ·faunas of northern 2 1 3 Bryozoans _______ Arkansas. In his paper in the Annals of the New York 4 4 24 11 43 Brachiopods ______________ 1 9 14 24 Academy of Sciences he described 110 new taxa of fossils Pelecypods..: ______________________ 19 19 Gastropods ______________________ -------- from the Fayetteville Shale. Unfortunately, he pub­ 7 -------- 7 lished no illustrations to accompany his descriptions, Ostracodes _______ 2 -------- 7 4 13 Trilobites ____________________ -_-_ nor did he include any inform·ation as to the fossil local­ 1 -------- 1 Totaffi _____ 6 5 69 30 110 ities from which his specimens were collected. Apparent­ ly, he intended to publish a more comprehensive In this tabulation, what Girty regarded both as new treatment of the Fayetteville Shale fauna at a later date, genera and subgenera are considered genera by modern as he did of the Wewoka fauna several years l31ter workers. The species, with the main exception of one (Girty, 1915b). Indeed, he prepared, with a few excep­ that is synonymous with another of his species, are still tions, figures and descriptions of the entire fauna of the regarded as valid. His varieties fall into several cate­ Fayetteville Shale, including those species he did notre­ gories. Although varieties are not considered to be taxa gard as new. But for reasons not known, Girty never that require fonnal names under the present Interna­ managed to complete the Fayetteville manuscript. He tional Code of Zoological Nomenclature, nevertheless, illustrated many of his Fayetteville Shale species in because Girty's names were published before 1961, they papers on the Moorefield Shale (Girty, 1911) and the can be use if the taxa are now regarded as valid species Batesvi1le Sandstone (Girty, 1915a), but not from the or subspecies. Of Girty's "varieties," therefore, in the original specimens.· present report, part are regarded as species in their own 1 2 REVISION OF SOME OF· GIRTY'S INVERTEBRATE FOSSILS right, part as subspecies, and part as not sufficiently to show external form and then make a series of cross differentiated from earlier species to merit recognition. sections using peel techniques. In the ostracodes : inade­ In this joint report, the corals were studied by Wil­ quate preservation of some of Girty's specimens has liam J. Sando, the pelecypods by John Pojetta, Jr., the made it necessary for Sohn to seek new material by gastropods by Ellis L. Y ochelson, the trilobites by crushing the excess rock matrix of Girty's collections. Mackenzie Gordon, Jr., and the ostracodes by I. G. Some of these topotypes a.re better preserved than the Sohn. primary types. Not included in the present report are the brachiopods Each author has worked out these problems one by . and bryozoans, which constituted about three-fifths of one as they presented themselves, with the idea of Girty's new taxa from the Fayetteville Shale. A study fitting each species into the framework of present day of the brachiopods has been begun by Mackenzie Gordon classification. This is the intent and purpose of the Jr. and will be published separately. Little likelihood present report. exists for publishing redescriptions and illustrations of the bryozoans in the near future. These present special FAYETTEVILLE SHALE difficulties. The thickness and relative poor condition of The Fayetteville Shale, named by Simonds ( 1891, p. Girty's thin sections precludes their use for adequately 42-48) for exposures at Fayetteville, Ark., is the most illustrating Girty's genera and species. Nor is it possible widely exposed of the forma.tions of Late Mississippian to remount and regrind these sections. New sections must (Chester) age in the Ozark Plateaus. From its eastern­ be cut, perhaps in part from new material collected from most exposure at the edge of the Mississippi River em­ Girty's localities. bayment near the settlement of Oil Trough, Independ­ ence County, Ark., it extends westward along the Boston ACKNOWLEDGMENTS Mountain escarpment and across northwest Arkansas We are indebted to Prof. J. H. Quinn of the Univer­ almost continuously, with many outliers and inliers, sity of Arkansas whose convincing arguments as to the into Oklahoma. In northeastern Oklahoma the Fayette­ need for such a paper a..~ this provided the ini.tial motiva­ ville Shale is exposed in a great C-shaped band of out­ tion for this study. crop in the Wyandotte, Pryor, Vinita, Tahlequah, and TYPES Muskogee 30-minute quadrangles, somewhat augmented because of repetition by en echelon faulting in the As Girty designated no ·types and, in fact, divulged Tahlequah and Muskogee quadrangles.
Load more

Recommended publications
  • Paleozoic Gastropoda from the Moose River Synclinorium, Northern Maine
    Paleozoic Gastropoda from the Moose River Synclinorium, Northern Maine GEOLOGICAL SURVEY PROFESSIONAL PAPER 503-A Paleozoic Gastropoda from the Moose River Synclinorium, Northern Maine By ARTJiUR J. BOUCOT and ELLIS L. YOCHELSON CONTRIBUTIONS TO PALEONTOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 503-A An investigation of fossils primarily of Devonian age UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402- Price 30 cents (paper cover) CONTENTS Page Page Abstract __________________________________________ _ A1 Register of localities ___________________________ -- __ _ A15 Introduction ______________________________________ _ 1 References cited __________________ ---- __ ------------ 17 Occurrence and distribution of the gastropods _________ _ 3 Index ____________________________________________ _ 19 Systematic paleontology ____________________________ _ 3 ILLUSTRATIONS [Plates follow index] PLATE 1. Gastropoda and miscellaneous fossils 2-3. Gastropoda Page FIGURE 1. Correlation table______________________ A2 2. Sketch of "Euomphalopterus" __ _ _ _ _ _ _ _ _ _ _ 17 TABLE Page TABLE 1. Distribution of gastropods in Paleozoic rocks of the Moose River synclinorium ________________ - ____ -- __ ------ A4 III CONTRIBUTIONS TO PALEONTOLOGY PALEOZOIC GASTROPODA FROM THE MOOSE RIVER SYNCLINORIUM, NORTHERN MAINE By ARTHUR J. BoucoT and ELLIS L. Y OCHELSON .ABSTRACT units which has been determined from study of other Large-scale collecting in the middle Paleozoic strata of the fossil groups (chiefly brachipods and corals). Moose River synclinorium has yielded a few gastropods-one Except where indicated, the taxonomic classification Ordovician species, six species from the Silurian, and two from follows that published by Knight, Batten, and Y ochel­ rocks of Silurian or Devonian age, one of these also oceurring son (1960).
    [Show full text]
  • Deconstructing the Fayetteville Lessons from a Mature Shale Play
    Deconstructing the Fayetteville ©Lessons Kimmeridge 2015 from - Deconstructing a Mature the Fayetteville Shale Play June 20151 Introduction The Fayetteville shale gas play lies in the eastern Arkoma Basin, east of the historic oil and gas fields in the central and western parts of the Basin. As one of the most mature, well-developed and well-understood shale gas plays, it offers an unparalleled dataset on which we can look back and review how closely what we “thought we knew” matches “what we now know”, and what lessons there are to be learned in the development of shales and the distribution of the cores of these plays. As we have previously noted (see Figure 1), identifying the core of a shale play is akin to building a Venn diagram based on a number of geological factors. By revisiting the Fayetteville we can rebuild this diagram and overlay it on what is now a vast database of historical wells to see whether it matched expectations, and if not, why not. The data also allows us to review how the development of the play changed (lateral length, completion, etc.) and the variance in performance Figure 1: Schematic of gradational overlap of geologic between operators presents valuable lessons in attributes that define the core of an unconventional whether success is all about the rocks, or whether resource play operator knowledge/insight can make good rocks bad or vice versa. © Kimmeridge 2015 - Deconstructing the Fayetteville 2 Background The Fayetteville shale lies in the eastern Arkoma Basin and ranges in depth from outcrop in the north to 9,000’ at the southern end of the play, with drill depths primarily between 3,000’ and 6,000’.
    [Show full text]
  • University of Nevada Reno Correlation of the Fauna V from The
    University of Nevada Reno Correlation of the Fauna v from the Middle Permian Section at Black Rock Northwestern, Nevada A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Geology Mines Library University of Nevada Reno, Nevada 89507 by Daniel Marshall Howe \\\ August 1975 ! K ilfE S EJBMRY T 2 o The thesis of Daniel Marshall Howe is approved: Dean; Graduate School University of Nevada Reno August, 1975 ACKNOWLEDGMENTS I would like to thank Dr. Joseph Lintz, Jr. for supervising and supporting the Masters problem. David Koliha and Larry Noble assisted in the field work. David was a constant source of enthusiasm and Larry's technical field knowledge and expertise were all invaluable to me. Diane Cornwall as curator of the University of Nevada museum helped with numerous tasks, and with Fred Gustafson they recommended numerous concepts and possible approaches I thank Mike Fiannaca. for his help in cutting the thin sections, and Wayne Kemp in helping to interpret them. I thank Dr. E.R. Larson in his availability and wisdom in keeping the original collections which he cheerfully made available to me when I enquired about the Black Rock. I thank Dr. Peter Comanor for joining my committee and spending time in the field with me. ABSTRACT Black Rock is located at the southwestern tip of the Black Rock Range in Humboldt County, northwestern Nevada. The Black Rock section consists of approxiamate- ly 2,500 feet of Middle Permian andesitic flows, lithic volcanic wackes, and limestone. Two of the limestone horizons have yielded faunules.
    [Show full text]
  • Study Develops Fayetteville Shale Reserves, Production Forecast John Browning Katie Smye a Study of Reserve and Production Potential for the Fayette- Scott W
    Study develops Fayetteville Shale reserves, production forecast John Browning Katie Smye A study of reserve and production potential for the Fayette- Scott W. Tinker Susan Horvath ville Shale in north central Arkansas forecasts a cumulative Svetlana Ikonnikova Tad Patzek 18 tcf of economically recoverable reserves by 2050, with Gürcan Gülen Frank Male production declining to about 400 bcf/year by 2030 from Eric Potter Forrest Roberts the current peak of about 950 bcf/year. Qilong Fu Carl Grote The forecast suggests the formation will continue to be a The University of Texas major contributor to U.S. natural gas production. Austin The Bureau of Economic Geology (BEG) at The University In this cross section of the Fayetteville Shale, the pay zone is identified by lines correlated between logs. Shaded areas of density-log porosity (DPhi) curve represent DPhi values less than 5%. The map shows the location of the cross section. TECHNOLOGY 1 FAYETTEVILLE POROSITY * THICKNESS (PHI*H) FIG. 2 Contours,2 density porosity-ft Stone 5 8 11 14 17 20 23 26 29 32 35 38 41 44 47 50 Batesville Van Buren Cleburne Independence Pope Conway Faulkner Area shown White Conway 0 Miles 25 Arkansas 0 Km 40 1With 60° NE trend bias to reect fault trends. 2Porosity is net from density logs (DPhi). of Texas at Austin conducted the study, integrating engineer- sient flow model for the first 3-5 years, resulting in decline ing, geology, and economics into a numerical model that al- rates inversely proportional to the square root of time, later lows for scenario testing on the basis of an array of technical shifting to exponential decline as a result of interfracture and economic parameters.
    [Show full text]
  • U.S. Shale Gas
    U.S. Shale Gas An Unconventional Resource. Unconventional Challenges. WHITE PAPER U.S. Shale Gas An Unconventional Resource . Unconventional Challenges . Executive Summary Current increasing demand and lagging supply mean high prices for both oil and gas, making exploitation of North American unconventional gas plays suddenly far more lucrative for producers. One of the most important such plays to emerge has been U.S. shale gas, with current recoverable reserves conservatively estimated at 500 to 1,000 trillion cubic feet. Hydraulic fracturing and horizontal drilling are the key enabling technologies that first made recovery of shale gas economically viable with their introduction in the Barnett Shale of Texas during the 1990s. However, a comparison of the currently hottest shale plays makes it clear that, after two decades of development and several iterations of the learning curve, best practices are application-dependent and must evolve locally. That said, a review of current trends in these hot plays indicates that, in many cases, the impact of high-drilling density required to develop continuous gas accumulations can be minimized through early and better identification of the accumulation type and size, well- designed access and transportation networks, and cooperative planning and construction efforts, when possible. U.S. Shale Gas Geographic Potential Across the U.S., from the West Coast to the Northeast, some 19 geographic basins are recognized sources of shale gas, where an estimated 35,000 wells were drilled in 2006. Presently, significant commercial gas shale production occurs in the Barnett Shale in the Fort Worth Basin, Lewis Shale in the San Juan Basin, Antrim Shale in the Michigan Basin, Marcellus Shale and others in the Appalachian Basin, and New Albany Shale in the Illinois Basin.
    [Show full text]
  • HCR1003 As Engrossed on 01-19-2017 09:28:34
    Stricken language would be deleted from and underlined language would be added to present law. 1 State of Arkansas As Engrossed: H1/19/17 2 91st General Assembly 3 Regular Session, 2017 HCR 1003 4 5 By: Representatives Leding, Vaught, C. Fite, Collins, D. Whitaker, Burch, Watson, Pilkington 6 By: Senators Teague, U. Lindsey 7 8 HOUSE CONCURRENT RESOLUTION 9 TO DESIGNATE THE ARKANSAURUS FRIDAYI AS THE OFFICIAL 10 STATE DINOSAUR. 11 12 13 Subtitle 14 TO DESIGNATE THE ARKANSAURUS FRIDAYI AS 15 THE OFFICIAL STATE DINOSAUR. 16 17 WHEREAS, for public and educational benefits, the Ninety-First General 18 Assembly of the State of Arkansas will select an official state dinosaur from 19 the known population of dinosaurs represented in Arkansas's fossil record: 20 Arkansaurus, sauropod dinosaur, and theropod dinosaur tracks of currently 21 uncertain taxonomic affiliation; and 22 23 WHEREAS, from these species, the Arkansaurus fridayi shall be selected, 24 since it is unique to the State of Arkansas, brings recognition to the State 25 of Arkansas, and promotes an interest paleontology in Arkansas; and 26 27 WHEREAS, by designating an official state dinosaur, Arkansas would join 28 nine (9) other states in the country with a unique designation of an official 29 state dinosaur; and 30 31 WHEREAS, the Arkansaurus fridayi was discovered in a gravel pit near 32 the community of Lockesburg, Arkansas, in August 1972 by Joe B. Friday and 33 studied by Professor James Harrison Quinn of the University of Arkansas in 34 1973 and by paleontologist ReBecca Hunt
    [Show full text]
  • Shell Microstructures in Early Cambrian Molluscs
    Shell microstructures in Early Cambrian molluscs ARTEM KOUCHINSKY Kouchinsky, A. 2000. Shell microstructures in Early Cambrian molluscs. - Acta Palaeontologica Polonica 45,2, 119-150. The affinities of a considerable part of the earliest skeletal fossils are problematical, but investigation of their microstructures may be useful for understanding biomineralization mechanisms in early metazoans and helpful for their taxonomy. The skeletons of Early Cambrian mollusc-like organisms increased by marginal secretion of new growth lamel- lae or sclerites, the recognized basal elements of which were fibers of apparently aragon- ite. The juvenile part of some composite shells consisted of needle-like sclerites; the adult part was built of hollow leaf-like sclerites. A layer of mineralized prism-like units (low aragonitic prisms or flattened spherulites) surrounded by an organic matrix possibly existed in most of the shells with continuous walls. The distribution of initial points of the prism-like units on a periostracurn-like sheet and their growth rate were mostly regular. The units may be replicated on the surface of internal molds as shallow concave poly- gons, which may contain a more or less well-expressed tubercle in their center. Tubercles are often not enclosed in concave polygons and may co-occur with other types of tex- tures. Convex polygons seem to have resulted from decalcification of prism-like units. They do not co-occur with tubercles. The latter are interpreted as casts of pore channels in the wall possibly playing a role in biomineralization or pits serving as attachment sites of groups of mantle cells. Casts of fibers and/or lamellar units may overlap a polygonal tex- ture or occur without it.
    [Show full text]
  • Copertina Guida Ai TRILOBITI V3 Esterno
    Enrico Bonino nato in provincia di Bergamo nel 1966, Enrico si è laureato in Geologia presso il Dipartimento di Scienze della Terra dell'Università di Genova. Attualmente risiede in Belgio dove svolge attività come specialista nel settore dei Sistemi di Informazione Geografica e analisi di immagini digitali. Curatore scientifico del Museo Back to the Past, ha pubblicato numerosi volumi di paleontologia in lingua italiana e inglese, collaborando inoltre all’elaborazione di testi e pubblicazioni scientifiche a livello nazonale e internazionale. Oltre alla passione per questa classe di artropodi, i suoi interessi sono orientati alle forme di vita vissute nel Precambriano, stromatoliti, e fossilizzazioni tipo konservat-lagerstätte. Carlo Kier nato a Milano nel 1961, Carlo si è laureato in Legge, ed è attualmente presidente della catena di alberghi Azul Hotel. Risiede a Cancun, Messico, dove si dedica ad attività legate all'ambiente marino. All'età di 16 anni, ha iniziato una lunga collaborazione con il Museo di Storia Naturale di Milano, ed è a partire dal 1970 che prese inizio la vera passione per i trilobiti, dando avvio a quella che oggi è diventata una delle collezioni paleontologiche più importanti al mondo. La sua instancabile attività di ricerca sul terreno in varie parti del globo e la collaborazione con professionisti del settore, ha permesso la descrizione di nuove specie di trilobiti ed artropodi. Una forte determinazione e la costruzione di un nuovo complesso alberghiero (AZUL Sensatori) hanno infine concretizzzato la realizzazione
    [Show full text]
  • Pennsylvanian Boundary Unconformity in Marine Carbonate Successions
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Dissertations & Theses in Earth and Atmospheric Earth and Atmospheric Sciences, Department of Sciences Summer 6-2014 ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. Lucien Nana Yobo University of Nebraska-Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/geoscidiss Part of the Geochemistry Commons, Geology Commons, Sedimentology Commons, and the Stratigraphy Commons Nana Yobo, Lucien, "ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING." (2014). Dissertations & Theses in Earth and Atmospheric Sciences. 59. http://digitalcommons.unl.edu/geoscidiss/59 This Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Dissertations & Theses in Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. By Luscalors Lucien Nana Yobo A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science Major: Earth and Atmospheric Sciences Under the Supervision of Professor Tracy D.
    [Show full text]
  • Carboniferous Formations and Faunas of Central Montana
    Carboniferous Formations and Faunas of Central Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER 348 Carboniferous Formations and Faunas of Central Montana By W. H. EASTON GEOLOGICAL SURVEY PROFESSIONAL PAPER 348 A study of the stratigraphic and ecologic associa­ tions and significance offossils from the Big Snowy group of Mississippian and Pennsylvanian rocks UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1962 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geological Survey Library has cataloged this publication as follows : Eastern, William Heyden, 1916- Carboniferous formations and faunas of central Montana. Washington, U.S. Govt. Print. Off., 1961. iv, 126 p. illus., diagrs., tables. 29 cm. (U.S. Geological Survey. Professional paper 348) Part of illustrative matter folded in pocket. Bibliography: p. 101-108. 1. Paleontology Montana. 2. Paleontology Carboniferous. 3. Geology, Stratigraphic Carboniferous. I. Title. (Series) For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, B.C. CONTENTS Page Page Abstract-__________________________________________ 1 Faunal analysis Continued Introduction _______________________________________ 1 Faunal relations ______________________________ 22 Purposes of the study_ __________________________ 1 Long-ranging elements...__________________ 22 Organization of present work___ __________________ 3 Elements of Mississippian affinity.._________ 22 Acknowledgments--.-------.- ___________________
    [Show full text]
  • 001-012 Primeras Páginas
    PUBLICACIONES DEL INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA Serie: CUADERNOS DEL MUSEO GEOMINERO. Nº 9 ADVANCES IN TRILOBITE RESEARCH ADVANCES IN TRILOBITE RESEARCH IN ADVANCES ADVANCES IN TRILOBITE RESEARCH IN ADVANCES planeta tierra Editors: I. Rábano, R. Gozalo and Ciencias de la Tierra para la Sociedad D. García-Bellido 9 788478 407590 MINISTERIO MINISTERIO DE CIENCIA DE CIENCIA E INNOVACIÓN E INNOVACIÓN ADVANCES IN TRILOBITE RESEARCH Editors: I. Rábano, R. Gozalo and D. García-Bellido Instituto Geológico y Minero de España Madrid, 2008 Serie: CUADERNOS DEL MUSEO GEOMINERO, Nº 9 INTERNATIONAL TRILOBITE CONFERENCE (4. 2008. Toledo) Advances in trilobite research: Fourth International Trilobite Conference, Toledo, June,16-24, 2008 / I. Rábano, R. Gozalo and D. García-Bellido, eds.- Madrid: Instituto Geológico y Minero de España, 2008. 448 pgs; ils; 24 cm .- (Cuadernos del Museo Geominero; 9) ISBN 978-84-7840-759-0 1. Fauna trilobites. 2. Congreso. I. Instituto Geológico y Minero de España, ed. II. Rábano,I., ed. III Gozalo, R., ed. IV. García-Bellido, D., ed. 562 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system now known or to be invented, without permission in writing from the publisher. References to this volume: It is suggested that either of the following alternatives should be used for future bibliographic references to the whole or part of this volume: Rábano, I., Gozalo, R. and García-Bellido, D. (eds.) 2008. Advances in trilobite research. Cuadernos del Museo Geominero, 9.
    [Show full text]
  • Palaeontologia Electronica DISCRIMINATION OF
    Palaeontologia Electronica http://palaeo-electronica.org DISCRIMINATION OF FENESTRATE BRYOZOAN GENERA IN MORPHOSPACE Steven J. Hageman and Frank K. McKinney ABSTRACT Concepts for generic diagnoses and discrimination of biserial fenestrate Bryozoa (Fenestellidae) have varied historically, but have largely been based on specialized colony forms (e.g., Archimedes), the shape and budding arrangement of chambers and other internal skeletal features such as hemisepta, and occasionally on the pres- ence or absence of discrete characters, such as placement of nodes on the frontal sur- face (e.g., Minilya). The question remains as to whether biserial fenestrate genera represent real biological clades, or whether they are convenient groupings of morpho- types based on untested characters. This study evaluates the distribution of 1075 operational taxonomic units (OTUs) from 15 fenestrate genera with measurements for nine morphometric characters – external features are not emphasized in most generic diagnoses. Here, each OTU represents a composite or idealized individual from a col- ony. Results show that OTUs plotted in principal component space do largely form coherent clusters based on a priori generic assignments. Thus the groupings based on characters other than the ones used to originally define them, add support to the notion of biological significance for recognized genera. The exceptions actually highlight and help resolve known issues. Therefore, we recognize Alternifenestella as a junior syn- onym of the genus Spinofenestella, and propose reassignment of Laxifenestella serrat- ula in Snyder (1991) to Fenestella serratula, and Fenestella sp. 1 in Ernst and Schroeder (2007) as Rectifenestella. We do not advocate that biserial fenestrate generic concepts should be based on the nine external characters used in this study, but rather that they can be used independently to evaluate the coherence of genera based on other discrete characters.
    [Show full text]