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Palaeoenvironmental Interpretation of the Triassic Sandstones of Scrabo
PALAEOENVIRONMENTAL INTERPRETATION OF THE TRIASSIC SANDSTONES OF SCRABO, COUNTY DOWN, NORTHERN IRELAND: ICHNOLOGICAL AND SEDIMENTOLOGICAL STUDIES INDICATING A MIXED FLUVIATILE-AEOLIAN SUCCESSION JAMES O. BUCKMAN, PHILIPS. DOUGHTY,MICHAEL J. BENTON and ANDREW J. JERAM (Received 19 May 1997) Abstract The Sherwood Sandstone Group at Scrabo, Co. Down, NorthernIreland, has been variously interpretedas aeolian or fluviatile. The sedimentological and ichnological data show that these sandstone-dominatedfacies were deposited within a mixed fluviatile-aeolian regime, in which fluviatile processes were responsible for the majorityof the preservedsedimentary sequence. The sequence contains a moderately diverse non-marine ichnofauna comprising the invertebratetrace fossils Biformites, Cruziana/Rusophycus(Isopodichnus), Herpystezoum(Unisulcus), Planolites, 'small arthropodtrackways', 'large arthropodtrackways' (cf. in part Paleohelcura), and the vertebrate trace fossil Chirotherium? (as well as a number of other, presently unnamed, vertebrate footprints). The recorded ichnofauna greatly increases that previously known from the Irish Triassic, comparesfavourably with that from the rest of Europe, and representsthe only known Irish locality for reptiliantrackways. Introduction north-east, are exposed at Scrabo Hill (Charlesworth 1963). Several Palaeogene The Sherwood Sandstone Group (Triassic) dolerite dykes and sills are exposed at the in north-eastIreland comprises part of a thick southern end of the hill, and these form a sequence of non-marine sediments, with a resistant cap that has shielded the sandstones maximum thickness of 1850m (Parnell et al. against removal by ice during the last 1992), which are rarely exposed and known glaciations. mostly from borehole data. At Scrabo (Fig. 1) Various environmental interpretationshave the Sherwood SandstoneGroup occurs within a been made of the Scrabo succession. The deep trough of Carboniferousto Triassic age succession has been interpretedas representing (Parnell et al. -
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. -
Smithsonian Miscellaneous Collections Volume 101
SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 101. NUMBER 15 FIFTH CONTRIBUTION TO NOMENCLATURE OF CAMBRIAN FOSSILS BY CHARLES E. RESSER Curator, Division of Stratigraphic Paleontology U. S. National Museum (Publication 3682) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION MAY 22, 1942 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 101, NUMBER 15 FIFTH CONTRIBUTION TO NOMENCLATURE OF CAMBRIAN FOSSILS BY CHARLES E. RESSER Curator, Division of Stratigraphic Paleontology U. S. National Museum (Publication 3682) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION MAY 12, 1942 Z?>i Botb QBafhtnore (prcee BALTIMORE, MD., U. S. A. ' FIFTH CONTRIBUTION TO NOMENCLATURE OF CAMBRIAN FOSSILS By CHARLES E. RESSER Curator, Division of Stratigraphic Paleonlolo<jy, U. S. National Museum This is the fifth in the series of papers designed to care for changes necessary in the names of Cambrian fossils. When the fourth paper was published it was hoped that further changes would be so few and so obvious that they could be incorporated in the Cambrian bibliographic summary, and would not be required to appear first in a separate paper. But even now it is impossible to gather all of the known errors for rectification in this paper. For example, correc- tion of some errors must await the opportunity to examine the speci- mens because the published illustrations, obviously showing incorrect generic determinations, are too poor to permit a proper understanding of the fossil. In the other instances where new generic designations are clearly indicated, erection of new genera should await the pub- lication of a paper with illustrations, because better-preserved speci- mens are in hand, or undescribed species portray the generic charac- teristics more fully and should therefore be chosen as the genotypes. -
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 -
Western North Greenland (Laurentia)
BULLETIN OF THE GEOLOGICAL SOCIETY OF DENMARK · VOL. 69 · 2021 Trilobite fauna of the Telt Bugt Formation (Cambrian Series 2–Miaolingian Series), western North Greenland (Laurentia) JOHN S. PEEL Peel, J.S. 2021. Trilobite fauna of the Telt Bugt Formation (Cambrian Series 2–Mi- aolingian Series), western North Greenland (Laurentia). Bulletin of the Geological Society of Denmark, Vol. 69, pp. 1–33. ISSN 2245-7070. https://doi.org/10.37570/bgsd-2021-69-01 Trilobites dominantly of middle Cambrian (Miaolingian Series, Wuliuan Stage) Geological Society of Denmark age are described from the Telt Bugt Formation of Daugaard-Jensen Land, western https://2dgf.dk North Greenland (Laurentia), which is a correlative of the Cape Wood Formation of Inglefield Land and Ellesmere Island, Nunavut. Four biozones are recognised in Received 6 July 2020 Daugaard-Jensen Land, representing the Delamaran and Topazan regional stages Accepted in revised form of the western USA. The basal Plagiura–Poliella Biozone, with Mexicella cf. robusta, 16 December 2020 Kochiella, Fieldaspis? and Plagiura?, straddles the Cambrian Series 2–Miaolingian Series Published online 20 January 2021 boundary. It is overlain by the Mexicella mexicana Biozone, recognised for the first time in Greenland, with rare specimens of Caborcella arrojosensis. The Glossopleura walcotti © 2021 the authors. Re-use of material is Biozone, with Glossopleura, Clavaspidella and Polypleuraspis, dominates the succes- permitted, provided this work is cited. sion in eastern Daugaard-Jensen Land but is seemingly not represented in the type Creative Commons License CC BY: section in western outcrops, likely reflecting the drastic thinning of the formation https://creativecommons.org/licenses/by/4.0/ towards the north-west. -
Enrollment and Coaptations in Some Species of the Ordovician Trilobite Genus Placoparia
Enrollment and coaptations in some sp eeies of the Ordovician trilobite genus Placoparia JEAN-LOUIS HENRY AND EUAN N.K. CLARKSON Henry, J.-L. & Clarkson, E.N.K. 1974 12 15: Enrollment and coaptations in some species of the Ordovician trilobite genus Placoparia. Fossils and Strata, No. 4, pp. 87-95. PIs. 1-3. Oslo ISSN 0300-949l. ISBN 82-00-04963-9. The species Pl. (Placoparia) cambriensis, Pl. (Coplacoparia ) tournemini and Pl. (Coplacoparia ) borni, described by Hammann (1971) from the Spanish Ordovician, are found in Brittany in formations attributed to the Llanvirn and the LIandeilo. The lateral borders of the librigenae of Pl. (Coplacoparia) tournemini and Pl. (Coplacoparia ) borni bear depressions into which the distal ends of the thoracic pleurae and the tips of the first pair of pygidial ribs come and fit during enrollment. These depressions, or coaptative structures sensu Cuenot (1919), are also to be observed in Pl. (Placoparia) zippei and Pl. (Hawleia) grandis, from the Ordovician of Bohemia. However, in the species tournemini and borni, additional depressions appear on the anterior cephalic border, and the coaptations evolve towards an increasing complexity. From Pl. (Placoparia) cambriensis, an ancestrai form with a wide geographic distribution, two distinct populations se em to have individu· alised by a process of allopatric speciation; one of these, probably neotenous, is represented by Pl. (Coplacoparia ) tournemini (Massif Armoricain and Iberian Peninsula), the other by Pl. (Placoparia ) zippei (Bohemia). Geo graphic isolation may be indirectly responsible for the appearance of new coaptative devices. jean-Louis Henry, Laboratoire de Paleontologie et de Stratigraphie, Institut de Geologie de l'Universite, B.P. -
PROGRAMME ABSTRACTS AGM Papers
The Palaeontological Association 63rd Annual Meeting 15th–21st December 2019 University of Valencia, Spain PROGRAMME ABSTRACTS AGM papers Palaeontological Association 6 ANNUAL MEETING ANNUAL MEETING Palaeontological Association 1 The Palaeontological Association 63rd Annual Meeting 15th–21st December 2019 University of Valencia The programme and abstracts for the 63rd Annual Meeting of the Palaeontological Association are provided after the following information and summary of the meeting. An easy-to-navigate pocket guide to the Meeting is also available to delegates. Venue The Annual Meeting will take place in the faculties of Philosophy and Philology on the Blasco Ibañez Campus of the University of Valencia. The Symposium will take place in the Salon Actos Manuel Sanchis Guarner in the Faculty of Philology. The main meeting will take place in this and a nearby lecture theatre (Salon Actos, Faculty of Philosophy). There is a Metro stop just a few metres from the campus that connects with the centre of the city in 5-10 minutes (Line 3-Facultats). Alternatively, the campus is a 20-25 minute walk from the ‘old town’. Registration Registration will be possible before and during the Symposium at the entrance to the Salon Actos in the Faculty of Philosophy. During the main meeting the registration desk will continue to be available in the Faculty of Philosophy. Oral Presentations All speakers (apart from the symposium speakers) have been allocated 15 minutes. It is therefore expected that you prepare to speak for no more than 12 minutes to allow time for questions and switching between presenters. We have a number of parallel sessions in nearby lecture theatres so timing will be especially important. -
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. -
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. -
Introduction to the Trilobites: Morphology, Ecology, Macroevolution and More by Michelle M
Introduction to the Trilobites: Morphology, Ecology, Macroevolution and More By Michelle M. Casey1, Perry Kennard2, and Bruce S. Lieberman1, 3 1Biodiversity Institute, University of Kansas, Lawrence, KS, 66045, 2Earth Science Teacher, Southwest Middle School, USD497, and 3Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045 Middle level laboratory exercise for Earth or General Science; supported provided by National Science Foundation (NSF) grants DEB-1256993 and EF-1206757. Learning Goals and Pedagogy This lab is designed for middle level General Science or Earth Science classes. The learning goals for this lab are the following: 1) to familiarize students with the anatomy and terminology relating to trilobites; 2) to give students experience identifying morphologic structures on real fossil specimens 3) to highlight major events or trends in the evolutionary history and ecology of the Trilobita; and 4) to expose students to the study of macroevolution in the fossil record using trilobites as a case study. Introduction to the Trilobites The Trilobites are an extinct subphylum of the Arthropoda (the most diverse phylum on earth with nearly a million species described). Arthropoda also contains all fossil and living crustaceans, spiders, and insects as well as several other extinct groups. The trilobites were an extremely important and diverse type of marine invertebrates that lived during the Paleozoic Era. They only lived in the oceans but occurred in all types of marine environments, and ranged in size from less than a centimeter to almost a meter across. They were once one of the most successful of all animal groups and in certain fossil deposits, especially in the Cambrian, Ordovician, and Devonian periods, they are extremely abundant. -
Contributions in BIOLOGY and GEOLOGY
MILWAUKEE PUBLIC MUSEUM Contributions In BIOLOGY and GEOLOGY Number 51 November 29, 1982 A Compendium of Fossil Marine Families J. John Sepkoski, Jr. MILWAUKEE PUBLIC MUSEUM Contributions in BIOLOGY and GEOLOGY Number 51 November 29, 1982 A COMPENDIUM OF FOSSIL MARINE FAMILIES J. JOHN SEPKOSKI, JR. Department of the Geophysical Sciences University of Chicago REVIEWERS FOR THIS PUBLICATION: Robert Gernant, University of Wisconsin-Milwaukee David M. Raup, Field Museum of Natural History Frederick R. Schram, San Diego Natural History Museum Peter M. Sheehan, Milwaukee Public Museum ISBN 0-893260-081-9 Milwaukee Public Museum Press Published by the Order of the Board of Trustees CONTENTS Abstract ---- ---------- -- - ----------------------- 2 Introduction -- --- -- ------ - - - ------- - ----------- - - - 2 Compendium ----------------------------- -- ------ 6 Protozoa ----- - ------- - - - -- -- - -------- - ------ - 6 Porifera------------- --- ---------------------- 9 Archaeocyatha -- - ------ - ------ - - -- ---------- - - - - 14 Coelenterata -- - -- --- -- - - -- - - - - -- - -- - -- - - -- -- - -- 17 Platyhelminthes - - -- - - - -- - - -- - -- - -- - -- -- --- - - - - - - 24 Rhynchocoela - ---- - - - - ---- --- ---- - - ----------- - 24 Priapulida ------ ---- - - - - -- - - -- - ------ - -- ------ 24 Nematoda - -- - --- --- -- - -- --- - -- --- ---- -- - - -- -- 24 Mollusca ------------- --- --------------- ------ 24 Sipunculida ---------- --- ------------ ---- -- --- - 46 Echiurida ------ - --- - - - - - --- --- - -- --- - -- - - --- -
Morphological Structure of Head and Comparison Between Agraulos Longicephalus Hicks, 1872 and A
Morphological structure of head and comparison between Agraulos longicephalus Hicks, 1872 and A. ceticephalus Barrande, 1846, from the Drumian of Spain and Czech Republic. Daniel Eduardo Rojas Ariza Proyecto de Grado para optar por el título de Geocientífico Asesor: Jorge Esteve Serrano Universidad de los Andes Facultad de Ciencias Departamento de Geociencias Bogotá, Colombia – diciembre 2020 Contents 1. Abstract 2. Introduction 2.1. Background 2.2. Ptychopariid morphologic features 3. Objective 3.1. General 3.2. Specifics 4. Study Material and Methodology 4.1. Fossils 4.2. Methodology 5. Results: Visualization of morphological variance 5.1. Regression Analysis 5.1.1. Individual regressions 5.1.1.1. A. longicephalus Hicks, 1872 5.1.1.2. A. ceticephalus Barrande, 1846 5.2. Principal Component Analysis (PCA) 5.3. Discriminant Function Analysis (DFA) 5.4. Procrustes ANOVA 6. Discussion 7. Conclusions 8. Acknowledgments 9. References 1. Abstract Order Ptychopariida has always been a problematic group concerning the taxonomic classification of Cambrian trilobites, and even though the temporality of this group is well known, the relation between this order with others, and, the difficulty for classifying ptychopariids have let to diverse problems in the phylogenetic classification of this, and other primitive orders of trilobites. Agraulos is one of the genera belonging to this order and is a common group of the middle Cambrian, it is a well-known genus inside ptychopariids, therefore, morphological knowledge about this taxon could be helpful to analyze morphological patterns among other species from the genus and even other genera inside the family Agraulidae, and even more, about the superfamily Ellipsocephaloidea.