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Comments on the Paper by A. May “Micheliniidae and Cleistoporidae (Anthozoa, Tabulata) from the Devonian of Spain”
Comments on the paper by A. May Micheliniidae and Cleistoporidae (Anthozoa, Tabulata) from the Devonian of Spain YVES PLUSQUELLEC & ESPERANZA FERNÁNDEZ-MARTÍNEZ PLUSQUELLEC,Y.&FERNÁNDEZ-MARTÍNEZ E. 2007. Com- lity for this species is known in Celtiberia, where the speci- ments on the paper by A. May “Micheliniidae and Cleistoporidae mens are preserved in calcite: North of Nogueras, Maripo- (Anthozoa, Tabulata) from the Devonian of Spain”. Bulletin of sas Formation, d4aβ, Lower Emsian. Geosciences 82(1), 85–89 (3 figures). Czech Geological Survey, Prague. ISSN 1214-1119. Manuscript received January 22, 2007; issued March 30, 2007. • DOI 10.3140/bull.geosci.2007.01.85 Pleurodictyum elisabetae May, 2006 Yves Plusquellec, Université de Bretagne Occidentale, UMR 6538 “Domaines océaniques”, Laboratoire de Paléontologie, The identification of Pleurodictyum-like corals is very UFR Sciences & Techniques, 6 av. Le Gorgeu – CS 93837, problematic when the aboral side is unknown. In this case F-29238 Brest cedex 3, France; [email protected] • the specimens could belong to Pleurodictyum Goldfuss, Esperanza Fernández-Martínez, Área de Paleontología, Facul- 1829, Procteria Davis, 1887, Procterodictyum Plusquel- tad de Ciencias Biológicas y Ambientales, Campus de Vegazana lec, 1993 or Amazonodictyum nom. nud. (Plusquellec s/n, Universidad de León, 24071 León, Spain; e.fernandez@uni- 2006, unpublished thesis; type species Pleurodictyum leon.es amazonicum Katzer, 1903). Nevertheless, a more precise identification is possible in a few cases. We have examined the two specimens (stock num- In our opinion the conclusions presented in the paper by bers 13D and 14D, Museo Geominero) figured by May Andreas May in Bulletin of Geosciences 81(3), 163–172 (fig. -
A Succession of Depositional Environments in the Mid-Ordovician Section at Crown Point, New York
A SUCCESSION OF DEPOSITIONAL ENVIRONMENTS IN THE MID-ORDOVICIAN SECTION AT CROWN POINT, NEW YORK Brewster Baldwin 1 and Lucy E. Harding Department of Geology Middlebury College, Middlebury, Vermont 05753 Introduction The Crown Point section, exposed at the Crown Point State Historic Site, is a wonderful place for using fossils, sedimentary textures and structures, and lithologies to interpret changing environments of deposition. Formations exposed in the 120 meter (400 feet) thick section include the Crown Point, Valcour, Orwell, and Glens Falls limestones, deposited between about 458-444 million years ago on the eastern margin of North America. The rocks record the onset of the continent-arc collision known as the Taconic Orogeny. The lower half of the section records deposition on a slowly subsiding, passive continental margin. The upper half records a swift transition to deeper water environments as the continental margin entered the subduction zone. At Crown Point these rocks comprise a homoclinal section dipping about 8 degrees to the west-northwest. The Middlebury College geology department uses the Crown Point section as a field exercise for both first- and second-year geology students. Their field trip as well as yours consists of a walking tour beginning about 500 meters southeast of Fort Crown Point, heading towards and through the Fort, and then continuing west for about 200 meters along the Lake Champlain shoreline. We will visit most of the lettered stations shown on the index and air photo maps (Figs. 1 and 2). The lettered stations are also shown on the detailed columnar section (Fig. 3) and the student columnar section (Fig. -
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https://doi.org/10.24199/j.mmv.1939.11.02 November 1939 MEM. NAT. Mus. VrcT., XI, 193Q. GRAPTOLITES OF AUSTRALIA: BIBLIOGRAPHY AND HISTORY OF RESEARCH By R. A. Keble, F.G.S. ( Palaeontologist, National 1J1usem·n, JJ:[elboiirne) and Professor TV. N. Benson, B.A., D.Sc. (University of Otago, Dunedin, New Zealcind.) The Australian graptolite fauna is probably the most complete in the world, certainly in regard to its Ordovician components, a fact clearly appreciated by McCoy. He had ready for the press descriptions and figures of most of the species afterwards described in J amcs Hall's J\fonograph published iu 1865, which may be regarded as the basis of systematic graptolite research, when he received from Hall a proof of his fignres. McCoy immediately conceded him priority and adopted his specific names. Had Hall delayed sending his proof, McCoy wonld certainly have pnblisl1ed his figures and descriptions and his name would have been just as pl'ominent in the literature of graptoliies as Hall's. Com menting on "Graptolitcs (Didymograpsus) frutieosus (Hall sp.)," l\IcCoy snys, "this is the first Victorian gmptolitc I ever smv, and, as it was then a new species, I had named it in my .MSS. after J\fr. J. A. Panton, who found it iu the soft shalcs of Bcn(Ugo, of ·which goldficld he was then "\Varden, nncl in ·whose hospitable camp I was then able to recognize the true g-cological age of the gold-bearing Rlates of the colony for the first time. �rhe same species was subsequently dis covered by Professor Hall in Canada; aud ns he kindly sent me an early proof of his illustration before publication, I of course adopted his name as above" (Prod. -
Chapter 2 Paleozoic Stratigraphy of the Grand Canyon
CHAPTER 2 PALEOZOIC STRATIGRAPHY OF THE GRAND CANYON PAIGE KERCHER INTRODUCTION The Paleozoic Era of the Phanerozoic Eon is defined as the time between 542 and 251 million years before the present (ICS 2010). The Paleozoic Era began with the evolution of most major animal phyla present today, sparked by the novel adaptation of skeletal hard parts. Organisms continued to diversify throughout the Paleozoic into increasingly adaptive and complex life forms, including the first vertebrates, terrestrial plants and animals, forests and seed plants, reptiles, and flying insects. Vast coal swamps covered much of mid- to low-latitude continental environments in the late Paleozoic as the supercontinent Pangaea began to amalgamate. The hardiest taxa survived the multiple global glaciations and mass extinctions that have come to define major time boundaries of this era. Paleozoic North America existed primarily at mid to low latitudes and experienced multiple major orogenies and continental collisions. For much of the Paleozoic, North America’s southwestern margin ran through Nevada and Arizona – California did not yet exist (Appendix B). The flat-lying Paleozoic rocks of the Grand Canyon, though incomplete, form a record of a continental margin repeatedly inundated and vacated by shallow seas (Appendix A). IMPORTANT STRATIGRAPHIC PRINCIPLES AND CONCEPTS • Principle of Original Horizontality – In most cases, depositional processes produce flat-lying sedimentary layers. Notable exceptions include blanketing ash sheets, and cross-stratification developed on sloped surfaces. • Principle of Superposition – In an undisturbed sequence, older strata lie below younger strata; a package of sedimentary layers youngs upward. • Principle of Lateral Continuity – A layer of sediment extends laterally in all directions until it naturally pinches out or abuts the walls of its confining basin. -
Genesee Valley Glacial and Postglacial Geology from 50000
Genesee Valley Glacial and Postglacial Geology from 50,000 Years Ago to the Present: A Selective Annotated Review Richard A. Young, Department of Geological Sciences, SUNY, Geneseo, NY 14454 Introduction The global chronology for The Pleistocene Epoch, or “ice age,” has been significantly revised during the last three decades (Alley and Clark, 1999) as a result of the extended and more accurate data provided by deep sea drilling projects, ice core studies from Greenland and Antarctica (Andersen et al. 2006; Svensson et al. 2008), oxygen isotope studies of marine sediments, and climatic proxy data from lake cores, peat bogs, and cave stalactites. These new data have improved our ability to match the Earth’s Milankovitch orbital cycles to the improved ice core and radiometric chronologies (ages based on radiocarbon, U-Th, U-Pb). However, the Milankovitch theory has recently been the subject of renewed controversy, and not all cyclical climatic phenomena are directly reconcilable with Milankovitch’s original ideas (Ridgwell et al., 1999; Ruddiman, 2006). Overall, it is evident that there must have been as many as 20 or more glacial cycles in the last 2.5 million years, not all of which necessarily resulted in the expansion of large ice sheets as far south as the United States-Canadian border. The International Union of Geological Sciences recently adopted a change for the Pliocene-Pleistocene boundary, extending the beginning of the Pleistocene Epoch back from 1.8 to 2.588 million years Before Present (BP). The average length of the most recent glacial- interglacial cycles (also known as “Stages”) is on the order of 100,000 years, with 10,000 to 15,000 years being the approximate length of the interglacial warm episodes between the longer cold cycles (also known as cold stadials and warm interstadials). -
Draft Port of Rochester & Genesee River Harbor Management Plan
2016 Draft Port of Rochester & Genesee River Harbor Management Plan This report was prepared with funding provided by the New York State Department of State under Title 11 of the Environmental Protection Fund. Photos provided by NYS DOS and City of Rochester Port of Rochester-Genesee River Harbor Management Plan City of Rochester, New York Table of Contents 1.0 INTRODUCTION ............................................................................... 1 1.1 PURPOSE & BENEFIT OF THE HARBOR MANAGEMENT PLAN ........................................................... 1 1.2 LEGISLATIVE AUTHORITY FOR LOCAL HARBOR MANAGEMENT......................................................... 2 1.2.1 The HMP as a Component of the Local Waterfront Revitalization Program ................. 2 1.3 HARBOR MANAGEMENT AREA ................................................................................................. 3 1.3.1 Harbor Management Area ............................................................................................ 3 1.3.2 Port of Rochester and Rochester Harbor Designations ................................................. 6 1.3.3 Port Redevelopment Project .......................................................................................... 6 1.3.4 HMA Historical Context ................................................................................................. 7 1.4 PUBLIC & STAKEHOLDER OUTREACH DURING HMP PREPARATION ................................................ 15 1.4.1 Project Advisory Committee Meetings ....................................................................... -
University of Michigan University Library
CONTRIBUTIONS FROM TEE MUSEUM OF PALEONTOLOGY UNIVERSITY OF MICHIGAN VOL. VIII, No. 8, pp. 205-220 (5 pls.) AUGUST11, 1950 CORALS OF THE DEVONIAN TRAVERSE GROUP OF MICHIGAN. PART 111, ANTHOLITES, PLEURODICTYUM, AND PROCTERIA BY ERWIN C. STUMM UNIVERSITY OF MICHIGAN PRESS ANN ARBOR CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY UNIVERSITY OF MICHIGAN Director: LEWISB. KELLUM The series of contributions from the Museum of Paleontology is a medium for the publication of papers based entirely or principally upon the collections in the Museum. When the number of wes 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 also to individuals upon request. Correspondence should be directed to the University of Michigan Press. A list of the separate papers in Vol- umes II-VII will be sent upon request. VOL. I. The Stratigraphy and Fauna of the Hackberry Stage of the Upper Devonian, by C. L. Fenton and M. A. Fenton. Pages xi+260. Cloth. $2.75. VOL. 11. Fourteen papers. Pages ixf240. Cloth. $3.00. Parts sold separately in paper covers. VOL. 111. Thirteen papers. Pages viii+275. Cloth. $3.50. Parts sold separately in paper covers. VOL. IV. Eighteen papers. Pages viii+295. Cloth. $3.50. Parts sold separately in paper covers. VOL. V. Twelve papers. Pages viii+-318. Cloth. $3.50. Part. sold separately in paper covers. VOL. VI. Ten papers. Pages viii+336. Paper covers. $3.00. Parts sold separately. VOL. VII. Ten numbers sold separately. (Continued on inside back cover) VOL. -
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. -
Systematics in Palaeontology
Systematics in palaeontology THOMAS NEVILLE GEORGE PRESIDENT'S ANNIVERSARY ADDRESS 1969 CONTENTS Fossils in neontological categories I98 (A) Purpose and method x98 (B) Linnaean taxa . x99 (e) The biospecies . 202 (D) Morphology and evolution 205 The systematics of the lineage 205 (A) Bioserial change 205 (B) The palaeodeme in phyletic series 209 (e) Palaeodemes as facies-controlled phena 2xi Phyletic series . 2~6 (A) Rates of bioserial change 2~6 (B) Character mosaics 218 (c) Differential characters 222 Phylogenetics and systematics 224 (A) Clade and grade 224 (a) Phylogenes and cladogenes 228 (e) Phylogenetic reconstruction 23 I (D) Species and genus 235 (~) The taxonomic hierarchy 238 5 Adansonian methods 240 6 References 243 SUMMARY A 'natural' taxonomic system, inherent in evolutionary change, pulses of biased selection organisms that themselves demonstrate their pressure in expanded and restricted palaeo- 'affinity', is to be recognized perhaps only in demes, and permutations of character-expres- the biospecies. The concept of the biospecies as sion in the evolutionary plexus impose a need a comprehensive taxon is, however, only for a palaeontologically-orientated systematics notional amongst the vast majority of living under which (in evolutionary descent) could organisms, and it is not directly applicable to be subsumed the taxa of the neontological fossils. 'Natural' systems of Linnaean kind rest moment. on assumptions made a priori and are imposed Environmentally controlled morphs, bio- by the systematist. The graded time-sequence facies variants, migrating variation fields, and of the lineage and the clade introduces factors typological segregants are sources of ambiguity into a systematics that cannot well be accommo- in a distinction between phenetic and genetic dated under pre-Darwinian assumptions or be fossil grades. -
Upper Devonian Depositional and Biotic Events in Western New York
MIDDLE- UPPER DEVONIAN DEPOSITIONAL AND BIOTIC EVENTS IN WESTERN NEW YORK Gordon C. Baird, Dept. of Geosciences, SUNY-Fredonia, Fredonia, NY 14063; D. Jeffrey Over, Dept. of Geological Sciences, SUNY-Geneseo, Geneseo, NY 14454; William T. Kirch gasser, Dept. of Geology, SUNY-Potsdam, Potsdam, NY 13676; Carlton E. Brett, Dept. of Geology, Univ. of Cincinnati, 500 Geology/Physics Bldg., Cincinnati, OH 45221 INTRODUCTION The Middle and Late Devonian succession in the Buffalo area includes numerous dark gray and black shale units recording dysoxic to near anoxic marine substrate conditions near the northern margin of the subsiding Appalachian foreland basin. Contrary to common perception, this basin was often not stagnant; evidence of current activity and episodic oxygenation events are characteristic of many units. In fact, lag deposits of detrital pyrite roofed by black shale, erosional runnels, and cross stratified deposits of tractional styliolinid grainstone present a counter intuitive image of episodic, moderate to high energy events within the basin. We will discuss current-generated features observed at field stops in the context of proposed models for their genesis, and we will also examine several key Late Devonian bioevents recorded in the Upper Devonian stratigraphic succession. In particular, two stops will showcase strata associated with key Late Devonian extinction events including the Frasnian-Famennian global crisis. Key discoveries made in the preparation of this field trip publication, not recorded in earlier literature, -
Hypothesis of Eurypterid Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology 311 (2011) 63–73 Contents lists available at SciVerse ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Testing the ‘mass-moult-mate’ hypothesis of eurypterid palaeoecology Matthew B. Vrazo ⁎, Simon J. Braddy Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol, BS8 1RJ, UK article info abstract Article history: The eurypterids (Arthropoda: Chelicerata), some of the earliest arthropods to undertake amphibious Received 6 May 2011 excursions onto land, are generally rare in the fossil record, but are sometimes found in great abundance, for Received in revised form 16 July 2011 example in the Late Silurian Bertie Group of New York State. The mass-moult-mate hypothesis has been Accepted 29 July 2011 proposed to explain such occurrences, whereby eurypterids undertook mass migrations into near shore Available online 5 August 2011 settings and lagoons to moult, mate and spawn, similar to the behaviour of living horseshoe crabs. This hypothesis is tested using measurements from over 600 Eurypterus specimens from three localities in the Keywords: Arthropod Bertie Group; Eurypterus remipes, from the Fiddlers Green Formation, and the slightly larger Eurypterus Exuvia lacustris, from the overlying Williamsville Formation. Disarticulation patterns support previous evidence for Taphonomy moulted assemblages. A significant predominance of female exuviae is noted at each locality, unlike studies on Biofacies modern Limulus populations. Therefore, a modified mass-mate-spawn-moult hypothesis is proposed here: Silurian males returned to deeper waters after mating, whereas females, having mated, remained at the breeding sites Eurypterus to deposit their eggs before moulting. After hatching, eurypterid larvae and juveniles remained in these spawning grounds until they matured and could move to deeper water, in comparison with Limulus. -
38—GEOLOGIC AGE SYMBOL FONT (Stratagemage) REF NO STRATIGRAPHIC AGE SUBDIVISION TYPE AGE SYMBOL KEYBOARD POSITION for Stratagemage FONT
Federal Geographic Data Committee U.S. Geological Survey Open-File Report 99–430 Public Review Draft - Digital Cartographic Standard for Geologic Map Symbolization PostScript Implementation (filename: of99-430_38-01.eps) 38—GEOLOGIC AGE SYMBOL FONT (StratagemAge) REF NO STRATIGRAPHIC AGE SUBDIVISION TYPE AGE SYMBOL KEYBOARD POSITION FOR StratagemAge FONT 38.1 Archean Eon A Not applicable (use Helvetica instead) 38.2 Cambrian Period _ (underscore = shift-hyphen) 38.3 Carboniferous Period C Not applicable (use Helvetica instead) 38.4 Cenozoic Era { (left curly bracket = shift-left square bracket) 38.5 Cretaceous Period K Not applicable (use Helvetica instead) 38.6 Devonian Period D Not applicable (use Helvetica instead) 38.7 Early Archean (3,800(?)–3,400 Ma) Era U Not applicable (use Helvetica instead) 38.8 Early Early Proterozoic (2,500–2,100 Ma) Era R (capital R = shift-r) 38.9 Early Middle Proterozoic (1,600–1,400 Ma) Era G (capital G = shift-g) 38.10 Early Proterozoic Era X Not applicable (use Helvetica instead) 38.11 Eocene Epoch # (pound sign = shift-3) 38.12 Holocene Epoch H Not applicable (use Helvetica instead) 38.13 Jurassic Period J Not applicable (use Helvetica instead) 38.14 Late Archean (3,000–2,500 Ma) Era W Not applicable (use Helvetica instead) 38.15 Late Early Proterozoic (1,800–1,600 Ma) Era I (capital I = shift-i) 38.16 Late Middle Proterozoic (1,200–900 Ma) Era E (capital E = shift-e) 38.17 Late Proterozoic Era Z Not applicable (use Helvetica instead) 38.18 Mesozoic Era } (right curly bracket = shift-right square bracket) 38.19 Middle Archean (3,400–3,000 Ma) Era V Not applicable (use Helvetica instead) 38.20 Middle Early Proterozoic (2,100–1,800 Ma) Era L (capital L = shift-l) 38.21 Middle Middle Proterozoic (1,400–1,200 Ma) Era F (capital F = shift-f) 38.22 Middle Proterozoic Era Y Not applicable (use Helvetica instead) A–38–1 Federal Geographic Data Committee U.S.