Trace Fossils from the Brioverian (Ediacaran- Fortunian) of Brittany (Nwfrance) R.Gougeon A*^, D
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Eubrontes and Anomoepus Track
Sullivan, R.M. and Lucas, S.G., eds., 2016, Fossil Record 5. New Mexico Museum of Natural History and Science Bulletin 74. 345 EUBRONTES AND ANOMOEPUS TRACK ASSEMBLAGES FROM THE MIDDLE JURASSIC XIASHAXIMIAO FORMATION OF ZIZHONG COUNTY, SICHUAN, CHINA: REVIEW, ICHNOTAXONOMY AND NOTES ON PRESERVED TAIL TRACES LIDA XING1, MARTIN G. LOCKLEY2, GUANGZHAO PENG3, YONG YE3, JIANPING ZHANG1, MASAKI MATSUKAWA4, HENDRIK KLEIN5, RICHARD T. MCCREA6 and W. SCOTT PERSONS IV7 1School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China; -email: [email protected]; 2Dinosaur Trackers Research Group, University of Colorado Denver, P.O. Box 173364, Denver, CO 80217; 3 Zigong Dinosaur Museum, Zigong 643013, Sichuan, China; 4 Department of Environmental Sciences, Tokyo Gakugei University, Koganei, Tokyo 184-8501, Japan; 5 Saurierwelt Paläontologisches Museum Alte Richt 7, D-92318 Neumarkt, Germany; 6 Peace Region Palaeontology Research Centre, Box 1540, Tumbler Ridge, British Columbia V0C 2W0, Canada; 7 Department of Biological Sciences, University of Alberta 11455 Saskatchewan Drive, Edmonton, Alberta T6G 2E9, Canada Abstract—The Nianpanshan dinosaur tracksite, first studied in the 1980s, was designated as the type locality of the monospecific ichnogenus Jinlijingpus, and the source of another tridactyl track, Chuanchengpus, both presumably of theropod affinity. After the site was mapped in 2001, these two ichnotaxa were considered synonyms of Eubrontes and Anomoepus, respectively, the latter designation being the first identification of this ichnogenus in China. The assemblage indicates a typical Jurassic ichnofauna. The present study reinvestigates the site in the light of the purported new ichnospecies Chuanchengpus shenglingensis that was introduced in 2012. After re- evaluation of the morphological and extramorphological features, C. -
Clay Diagenesis and Low-Grade Metamorphism of Tithonian and Berriasian Sediments in the Cameros Basin (Spain)
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by EPrints Complutense Clay Minerals (2001) 36, 325–333 Clay diagenesis and low-grade metamorphism of Tithonian and Berriasian sediments in the Cameros Basin (Spain) J. F. BARRENECHEA1,*, M. RODAS1 ,M.FREY2 , J. ALONSO-AZCA´ RATE3 4 AND J. R. MAS 1 Departamento de Cristalografı´a y Mineralogı´a, Universidad Complutense de Madrid, 28040 Madrid, Spain, 2 Mineralogisch-Petrographisches Institut, Basel University, CH 4056 Basel, Switzerland (deceased), 3 Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Fa´brica de Armas, 45071 Toledo, Spain, and 4 Departamento de Estratigrafı´a, Universidad Complutense de Madrid, 28040 Madrid, Spain (Received 29 February 2000; revised 13 October 2000) ABSTRACT: The clay mineral assemblages of the Tithonian and Berriasian sediments (Tera and Oncala Groups) in the eastern part of the Cameros basin are investigated at seven localities. The lowest-grade assemblage, located on the southern border of the basin, contains calcite + quartz + hematite + kaolinite + mixed-layer illite-smectite (R = 1, 65À85% illite layers) + discrete illite (IC = 0.5À0.65D82y). Systematic increases in the illite and chlorite crystallinities suggest increasing metamorphic grade from the northwest part of the basin to the southeast. This trend does not follow the pattern previously described for the overlying late Berriasian–early Aptian sediments (Urbio´n and Enciso Groups), which exhibit a higher metamorphic grade. This may result from local variations in sedimentary facies, as well as the circulation of hot migratory fluids. Tertiary compression occurring long after the main metamorphic event is considered to be responsible for the enhanced illite and chlorite crystallinities measured in the SE extreme of the basin. -
Helium in Southwestern Saskatchewan: Accumulation and Geological Setting
Open File Report 2016-1 Helium in Southwestern Saskatchewan: Accumulation and Geological Setting Melinda M. Yurkowski 2016 (Revised 14 December 2016) Saskatchewan Geological Survey ii Open File Report 2016-1 Open File Report 2016-1 Helium in Southwestern Saskatchewan: Accumulation and Geological Setting Melinda M. Yurkowski 2016 (Revised 14 December 2016) Printed under the authority of the Minister of the Economy © 2016, Government of Saskatchewan Although the Saskatchewan Ministry of the Economy has exercised all reasonable care in the compilation, interpretation and production of this product, it is not possible to ensure total accuracy, and all persons who rely on the information contained herein do so at their own risk. The Saskatchewan Ministry of the Economy and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in, or derived from, this product. This product is available for viewing and download at: http://www.publications.gov.sk.ca/deplist.cfm?d=310&c=176 Information from this publication may be used if credit is given. It is recommended that reference to this publication be made in the following form: Yurkowski, M.M. (2016): Helium in southwestern Saskatchewan: accumulation and geological setting; Saskatchewan Ministry of the Economy, Saskatchewan Geological Survey, Open File Report 2016-1, 20p. and Microsoft® Excel® file. Saskatchewan Geological Survey ii Open File Report 2016-1 Contents Introduction and Study Area .......................................................................................................................................... -
Trace Fossils from Silurian and Devonian Turbidites of the Chauvay Area, Southern Tien Shan, Kyrgyzstan
Annales Societatis Geologorum Poloniae (2009), vol. 79: 1-11. TRACE FOSSILS FROM SILURIAN AND DEVONIAN TURBIDITES OF THE CHAUVAY AREA, SOUTHERN TIEN SHAN, KYRGYZSTAN Michał WARCHO£1 & Stanisław LESZCZYŃSKI2 1 Institute o f Geological Sciences, Polish Academy of Sciences, ul. Senacka 1, 31-002 Kraków, Poland, e-mail: [email protected] Institute o f Geological Sciences, Jagiellonian University, ul. Oleandry 2a, 30-063 Kraków, Poland, e-mail: [email protected] Warchoł, M. & Leszczyński, S., 2009. Trace fossils from Silurian and Devonian turbidites of the Chauvay area, southern Tien Shan, Kyrgyzstan. Annales Societatis Geologorum Poloniae, 79: 1-11. Abstract: The siliciclastic turbidite successions (Pul’gon and Dzhidala Formations) that crop out in the eastern part of the Chauvay River valley, are marked on geological maps as a belt of terrigenous deposits of Silurian- Devonian age. They resemble deposits of overbank areas and deposilional lobes of deep sea fans, and display common trace fos sils particularly on lower surfaces of sandstone beds. Sixleen ichnolaxa representing four morphological groups have been dislinguished. The trace fos sil as semblages suggest their affiliation to the Nereites ichnolacies. Various branched, prelurbidlte forms predominate in both examlned units, although the assemblages of individual units differ slightly in composition. In the Pulg’on Formation, small, densely distributed burrows commonly occur on lower surfaces of sandstone beds. Shallow burrowing depth together with relatively low diversity trace fossil assemblages indicate lowered oxygenation of the sea floor. Key words: Tien Shan; Kyrgyzstan; Silurian-Devonian; turbidites; trace fossils. Manuscript received 12 August 2008, accepted 26 February 2009 INTRODUCTION described from these deposits. -
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A couple of partially-feathered creatures about the The Outside Story size of a turkey pop out of a stand of ferns. By the water you spot a flock of bigger animals, lean and predatory, catching fish. And then an even bigger pair of animals, each longer than a car, with ostentatious crests on their heads, stalk out of the heat haze. The fish-catchers dart aside, but the new pair have just come to drink. We can only speculate what a walk through Jurassic New England would be like, but the fossil record leaves many hints. According to Matthew Inabinett, one of the Beneski Museum of Natural History’s senior docents and a student of vertebrate paleontology, dinosaur footprints found in the sedimentary rock of the Connecticut Valley reveal much about these animals and their environment. At the time, the land that we know as New England was further south, close to where Cuba is now. A system of rift basins that cradled lakes ran right through our region, from North Carolina to Nova Scotia. As reliable sources of water, with plants for the herbivores and fish for the carnivores, the lakes would have been havens of life. While most of the fossil footprints found in New England so far are in the lower Connecticut Valley, Dinosaur Tracks they provide a window into a world that extended throughout the region. According to Inabinett, the By: Rachel Marie Sargent tracks generally fall into four groupings. He explained that these names are for the tracks, not Imagine taking a walk through a part of New the dinosaurs that made them, since, “it’s very England you’ve never seen—how it was 190 million difficult, if not impossible, to match a footprint to a years ago. -
Description of Bird Tracks from the Kitadani Formation (Aptian), Katsuyama, Fukui, Japan with Three-Dimensional Imaging Techniques
Memoir of the Fukui Prefectural Dinosaur Museum 17: 1–8 (2018) ARTICLE © by the Fukui Prefectural Dinosaur Museum DESCRIPTION OF BIRD TRACKS FROM THE KITADANI FORMATION (APTIAN), KATSUYAMA, FUKUI, JAPAN WITH THREE-DIMENSIONAL IMAGING TECHNIQUES Takuya IMAI 1, 2, Yuta TSUKIJI 3 and Yoichi AZUMA 1,4 1 Fukui Prefectural Dinosaur Museum, 51-11 Terao, Muroko, Katsuyama, Fukui 911-8601, Japan 2 Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan 3 Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8526, Japan 4 Institute of Dinosaur Reseach, Fukui Prefectural University, 4-1-1 Kenjojima, Matsuoka, Eiheiji, Fukui, 910-1195, Japan ABSTRACT The Early Cretaceous ichnofossils of birds numerously occur in South Korea and China. Together with rich skeletal record from northeastern China, they facilitate our understanding about distribution and diversity of birds during the time. In contrast, in Japan, the fossil record of the Early Cretaceous birds is poorly known. Here, we report two ichnotaxa of the Early Cretaceous birds from the Aptian Kitadani Formation. We employ three-dimensional imaging techniques to objectively document and describe the specimens. Specimens include FPDM-F-74 and FPDM-F-75 recovered from an alternating sequence of fine sandstone and mudstone of the Kitadani Formation cropping out in the Kitadani Dinosaur Quarry, Katsuyama, Fukui, Japan. FPDM-F-74 is large in size, bears slender digits with pointy ends (claw impressions), and lacks hallux and webbing traces. These characters allow assignment of FPDM-F-74 to cf. -
Constraints on the Timescale of Animal Evolutionary History
Palaeontologia Electronica palaeo-electronica.org Constraints on the timescale of animal evolutionary history Michael J. Benton, Philip C.J. Donoghue, Robert J. Asher, Matt Friedman, Thomas J. Near, and Jakob Vinther ABSTRACT Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are fundamental to nearly every evolutionary model and process. Rates need dates. There is much debate on the most appropriate and reasonable ways in which to date the tree of life, and recent work has highlighted some confusions and complexities that can be avoided. Whether phylogenetic trees are dated after they have been estab- lished, or as part of the process of tree finding, practitioners need to know which cali- brations to use. We emphasize the importance of identifying crown (not stem) fossils, levels of confidence in their attribution to the crown, current chronostratigraphic preci- sion, the primacy of the host geological formation and asymmetric confidence intervals. Here we present calibrations for 88 key nodes across the phylogeny of animals, rang- ing from the root of Metazoa to the last common ancestor of Homo sapiens. Close attention to detail is constantly required: for example, the classic bird-mammal date (base of crown Amniota) has often been given as 310-315 Ma; the 2014 international time scale indicates a minimum age of 318 Ma. Michael J. Benton. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Philip C.J. Donoghue. School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, U.K. [email protected] Robert J. -
Mannville Group of Saskatchewan
Saskatchewan Report 223 Industry and Resources Saskatchewan Geological Survey Jura-Cretaceous Success Formation and Lower Cretaceous Mannville Group of Saskatchewan J.E. Christopher 2003 19 48 Printed under the authority of the Minister of Industry and Resources Although the Department of Industry and Resources has exercised all reasonable care in the compilation, interpretation, and production of this report, it is not possible to ensure total accuracy, and all persons who rely on the information contained herein do so at their own risk. The Department of Industry and Resources and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in, or derived from, this report. Cover: Clearwater River Valley at Contact Rapids (1.5 km south of latitude 56º45'; latitude 109º30'), Saskatchewan. View towards the north. Scarp of Middle Devonian Methy dolomite at right. Dolomite underlies the Lower Cretaceous McMurray Formation outcrops recessed in the valley walls. Photo by J.E. Christopher. Additional copies of this digital report may be obtained by contacting: Saskatchewan Industry and Resources Publications 2101 Scarth Street, 3rd floor Regina, SK S4P 3V7 (306) 787-2528 FAX: (306) 787-2527 E-mail: [email protected] Recommended Citation: Christopher, J.E. (2003): Jura-Cretaceous Success Formation and Lower Cretaceous Mannville Group of Saskatchewan; Sask. Industry and Resources, Report 223, CD-ROM. Editors: C.F. Gilboy C.T. Harper D.F. Paterson RnD Technical Production: E.H. Nickel M.E. Opseth Production Editor: C.L. Brown Saskatchewan Industry and Resources ii Report 223 Foreword This report, the first on CD to be released by the Petroleum Geology Branch, describes the geology of the Success Formation and the Mannville Group wherever these units are present in Saskatchewan. -
Trace Fossils from Lower Palaeozoic Ocean-Floor Sediments of the Southern Uplands of Scotland M
Transactions of the Royal Society of Edinburgh: Earth Sciences, 73, 67-87, 1982 Trace fossils from Lower Palaeozoic ocean-floor sediments of the Southern Uplands of Scotland M. J. Benton ABSTRACT: The Ordovician and Silurian rocks of the Southern Uplands of Scotland have been interpreted as sediments deposited on the northern margin of the Iapetus Ocean. Trace fossils are abundant at many localities in ocean-floor turbidites and mudstones that usually lack all other evidence of life. Twelve ichnogenera are present, and they are mainly meandering locomotion and feeding trails and burrow networks: Dictyodora, Caridolites, Helminthoida, Neonereites, Nereites, Protovirgularia, Gordia, Megagrapton, Paleodictyon, Chondrites, Plano- lites and Skolithos. The trace fossils occur in at least five distinct assemblages and the composition of these was probably controlled by the frequency and nature of the turbidity currents, and possibly by the oxygen content of the mudstones. Where turbidity currents were weak, abundant Dictyodora, together with Caridolites, Neonereites, Nereites, Protovirgularia and Gordia occur in various combinations. Where currents were stronger, traces such as Gordia, Paleodictyon and Megagrapton may be exhumed and cast on turbidite soles, and the sand may contain Skolithos. The 'deep-sea' Nereites trace fossil facies is divisible into several assemblages, presumably environmentally controlled. KEY WORDS: Iapetus Ocean, ichnology, mudstone, Nereites Facies, Ordovician, shale, Silurian, turbidite. Deep-sea trace fossil assemblages of the Ordovician and 1. Geological setting Silurian are poorly known. The Lower Palaeozoic turbidites and associated mudstones of the Southern Uplands of Scot- 1.1. Structure and history of deposition land preserve at least 12 ichnogenera and there are several The Ordovician and Silurian rocks of the Southern Uplands distinct assemblages that are associated with particular (basalts, cherts, graptolitic shales, greywackes and red or sedimentary conditions. -
Lower Cretaceous Avian-Dominated, Theropod
Lower cretaceous avian-dominated, theropod, thyreophoran, pterosaur and turtle track assemblages from the Tugulu Group, Xinjiang, China: ichnotaxonomy and palaeoecology Lida Xing1,2, Martin G. Lockley3, Chengkai Jia4, Hendrik Klein5, Kecheng Niu6, Lijun Zhang7, Liqi Qi8, Chunyong Chou2, Anthony Romilio9, Donghao Wang2, Yu Zhang2, W Scott Persons10 and Miaoyan Wang2 1 State Key Laboratory of Biogeology and Environmental Geology, China University of Geoscience (Beijing), Beijing, China 2 School of the Earth Sciences and Resources, China University of Geoscience (Beijing), Beijing, China 3 Dinosaur Trackers Research Group, University of Colorado at Denver, Denver, United States 4 Research Institute of Experiment and Detection of Xinjiang Oil Company, PetroChina, Karamay, China 5 Saurierwelt Paläontologisches Museum, Neumarkt, Germany 6 Yingliang Stone Natural History Museum, Nan’an, China 7 Institute of Resources and Environment, Key Laboratory of Biogenic Traces & Sedimentary Minerals of Henan Province, Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Polytechnic University, Jiaozuo, China 8 Faculty of Petroleum, China University of Petroleum (Beijing) at Karamay, Karamay, China 9 School of Biological Sciences, The University of Queensland, Brisbane, Australia 10 Mace Brown Museum of Natural History, Department of Geology and Environmental Geosciences, College of Charleston, Charleston, United States ABSTRACT Rich tetrapod ichnofaunas, known for more than a decade, from the Huangyangquan Reservoir (Wuerhe District, Karamay City, Xinjiang) have been an abundant source Submitted 10 January 2021 of some of the largest Lower Cretaceous track collections from China. They originate Accepted 26 April 2021 from inland lacustrine clastic exposures of the 581–877 m thick Tugulu Group, 28 May 2021 Published variously divided into four formations and subgroups in the northwestern margin of Corresponding author the Junggar Basin. -
2010-11-08-HA-FEA-Connections-Charter-School
Final Environmental Assessment For the CONNECTIONS PUBLIC CHARTER SCHOOL MASTER PLAN Kaumana, South Hilo, Hawai‘i Tax Map Key: (3)2-5-006:141 Prepared for: Connections Public Charter School 174 Kamehameha Avenue Hilo, Hawai‘i 96720 Prepared by: Wil Chee – Planning & Environmental October 2010 FINAL ENVIRONMENTAL ASSESSMENT Connections Public Charter School, Kaumana, South Hilo, Hawaii Table of Contents ACRONYMS...............................................................................................................................................................iv 1.0 INTRODUCTION AND PROJECT SUMMARY......................................................................................1 1.1 PROJECT PROFILE ........................................................................................................................................1 1.2 PROJECT BACKGROUND ..............................................................................................................................2 1.2.1 Revised Draft Environmental Assessment (EA) ..........................................................................................2 1.3 SCOPE AND AUTHORITY ..............................................................................................................................3 1.4 PROPOSED ACTION......................................................................................................................................3 1.5 PURPOSE AND NEED FOR THE PROPOSED ACTION .......................................................................................3 -
Stegosaurian Footprints from the Morrison Formation of Utah and Their Implications for Interpreting Other Ornithischian Tracks Gerard D
Stegosaurian footprints from the Morrison Formation of Utah and their implications for interpreting other ornithischian tracks Gerard D. Gierliński and Karol Sabath Polish Geological Institute, Rakowiecka 4, 00-975 Warsaw, Poland. e-mail: [email protected] ABSTRACT - The supposed stegosaurian track Deltapodus Whyte & Romano, 1994 (Middle Jurassic of England) is sauro- pod-like, elongate and plantigrade, but many blunt-toed, digitigrade, large ornithopod-like footprints (including pedal print cast associated with the manus of Stegopodus Lockley & Hunt, 1998) from the Upper Jurassic of Utah, better fit the stego- saurian foot pattern. The Morrison Formation of Utah yielded other tracks fitting the dryomorph (camptosaur) foot pattern (Dinehichnus Lockley et al., 1998) much better than Stegopodus. If the Stegopodus pedal specimen (we propose to shift the emphasis from the manus to the pes in the revised diagnosis of this ichnotaxon) and similar ichnites are proper stegosaur foot- prints, Deltapodus must have been left by another thyreophoran trackmaker. Other Deltapodus-like (possibly ankylosaurian) tracks include Navahopus Baird,1980 and Apulosauripus Nicosia et al., 1999. Heel-dominated, short-toed forms within the Navahopus-Deltapodus-Apulosauripus plexus differ from the gracile, relatively long-toed Tetrapodosaurus Sternberg, 1932, traditionally regarded as an ankylosaurian track. Thus, the original interpretation of the latter as a ceratopsian track might be correct, supporting early (Aptian) appearance of ceratopsians in North America. Isolated pedal ichnites from the Morrison Formation (with a single tentatively associated manus print, and another one from Poland) and the only known trackways with similar footprints (Upper Jurassic of Asturias, Spain) imply bipedal gait of their trackmakers. Thus, problems with stegosaur tracks possibly stem from the expectation of their quadrupedality.