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Wyświetlanie 1-15 z 64
Tytuł:
A new Cambrian catillicephalid trilobite from the Shallow Bay Formation of western Newfoundland, Canada
Autorzy:
Westrop, Stephen R.
Dengler, Alyce A.
Powiązania:
https://bibliotekanauki.pl/articles/2216209.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Cambrian
Trilobita
Catillicephala
Laurentia
North America
Opis:
Species of Catillicephala are known from sites around the mid-Cambrian margin of Laurentian North America, including Vermont, Quebec, Newfoundland and North Greenland. Catillicephala cifellii sp. nov. is from the Downes Point Member of the Shallow Bay Formation (Cow Head Group) in western Newfoundland. It occurs in three shelf margin-derived boulders in debris flow conglomerates that accumulated in a continental slope setting. The associated trilobites and agnostoid arthropods, including Ptychagnostus aculeatus and Megagnostus glandiformis, indicate a correlation with the Lejopyge laevigata Zone. As such, C. cifellii is among the oldest representatives of the genus, and is early Guzhangian in age.
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 1; 27-33
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Philosophy and Power in North America: a Brief Introduction
Autorzy:
Mango, Peter
Powiązania:
https://bibliotekanauki.pl/articles/512385.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Diecezjalne Adalbertinum
Tematy:
philosophy
political power
American politics
North America
Opis:
Someone once claimed that every person is a citizen of two countries: of their own, and of the United States of America. This is obvious hyperbole, perhaps written when Europeans were even more fascinated by America’s political ex-periment, economic expansion, and population growth than by its popular cul-ture. Peoples the world over do not automatically identify with the United States; in fact, many define themselves in opposition to it. The article first ex-amines some primary political powers in American politics, and then traces certain distinct philosophies as responsible for affecting perspectives on centralized government, socioeconomic affairs, foreign policy, and socio-cultural issues.
Źródło:
Studia Ełckie; 2013, 15, 4; 483-501
1896-6896
2353-1274
Pojawia się w:
Studia Ełckie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards a Cybersecurity Zone in North America: Exploring the Creation of a Regional Cybersecurity Complex Under the USMCA
Autorzy:
Torres, Marco Antonio Lopátegui
Powiązania:
https://bibliotekanauki.pl/articles/1053790.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Politycznych i Studiów Międzynarodowych
Tematy:
cybersecurity
regional security complex
USMCA
North America
Opis:
Cybersecurity has been an important developing subject for International Relations as a result of the ever-evolving world, much influenced by technological innovation. Since the end of the Cold War, security analysis has been regionalised and has examined cooperation among neighbours in order to address common problems. However, classic approaches to security within the discipline are deemed insufficient in the wake of new vulnerabilities from cyberspace. In order to put cybersecurity on the agenda for the region comprised by Mexico, the United States, and Canada - and in order to understand the possibilities of a cybersecurity zone in North America this article uses the Regional Security Complex Theory to make a proposal for a North American Cybersecurity Complex. Based on the opportunities offered by the new United States-Mexico-Canada Agreement (USMCA), the means for such a complex are explained.
Źródło:
Stosunki Międzynarodowe - International Relations; 2020, 56, 1; 91-113
0209-0961
Pojawia się w:
Stosunki Międzynarodowe - International Relations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A revaluation of rhipidocystid echinoderms based on a new flattened blastozoan from the Upper Ordovician of Maryland, USA
Autorzy:
Zamora, S.
Sprinkle, J.
Sumrall, C.D.
Powiązania:
https://bibliotekanauki.pl/articles/2082230.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Echinodermata
Blastozoa
Rhipidocystidae
Paleozoic
Chambersburg Formation
North America
Opis:
A new rhipidocystid echinoderm from the Upper Ordovician Chambersburg Formation in western Maryland (USA) is here described based on four exquisitely preserved specimens. Specimens of Durhamicystis americana gen. et sp. nov. preserve both thecal sides and the oral area, with identification of major apertures including peristome, periproct, gonopore, and hydropore. This allows orientation of this species and proper comparison across all rhipidocystids. Durhamicystis americana has a large theca composed of ten marginal plates with only two basals on the posterior side, two ambulacra and seven large oral plates with brachioles attached either on orals or smaller flooring plates. Rhipidocystids include taxa with lateral flattening along the BC-DE axis (i.e., Rhipidocystis) and others along the anterior-posterior A-CD axis (i.e., Durhamicystis, Neorhipidocystis, and Petalocystites) suggesting rhipidocystids may be paraphyletic.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 3; 455-465
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multispecies leatherback turtle assemblage from the Oligocene Chandler Bridge and Ashley formations of South Carolina, USA
Autorzy:
Fallon, B.R.
Boessenecker, R.W.
Powiązania:
https://bibliotekanauki.pl/articles/2082243.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Chelonioidea
Natemys
Egyptemys
Psephophorus
Paleogene
Oligocene
North America
Opis:
Paleogene dermochelyid species richness far exceeded that of today. Leatherback sea turtles were most species rich in the Paleogene, but their richness declined sharply during the Neogene with only one species existing today, Dermochelys coriacea. We describe the fossil remains of three leatherback genera (Natemys, Psephophorus, and Egyptemys) from the upper Oligocene Chandler Bridge Formation and two (Natemys and Psephophorus) from the lower Oligocene Ashley Formation of South Carolina, USA. The fossils consist of isolated and some associated carapacial ossicles. Several ossicles are referred to Natemys sp. because their scalloped edges are indicative of the carapacial sunflower pattern specific to this genus. Additionally, two Natemys morphotypes (Natemys sp. 1 and 2) are distinguished based on differences in ossicle thickness and internal structure. We refer two ossicles to cf. Psephophorus sp. because of their internal diploic structure and because one has a dorsal radial pattern while the other has a prominent ridge that exhibits strong visceral concavity. Finally, we refer one ossicle to cf. Egyptemys sp. because it has a shallow keel that shows little expression on the visceral surface, although we also acknowledge the ossicle’s similarity to some ridged ossicles of the genus Psephophorus. These ossicles represent the first multispecies assemblage of leatherback fossils reported worldwide. Furthermore, the specimens fill both temporal and geographic gaps for extinct leatherback genera and represent the first formally described dermochelyids from South Carolina and the Oligocene of the Atlantic Coastal Plain.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 4; 763-776
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometric morphometric analysis and taxonomic revision of the Gzhelian (Late Pennsylvanian) conodont Idiognathodus simulator from North America
Autorzy:
HOGANCAMP, NICHOLAS J.
BARRICK, JAMES E.
STRAUSS, RICHARD E.
Powiązania:
https://bibliotekanauki.pl/articles/945657.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
conodonta
idiognathodus
morphometrics
pennsylvanian
gzhelian
north america
midcontinent
Opis:
A new morphometric approach was developed to study morphological variation within P1 elements commonly referred to as Idiognathodus simulator, which was selected to be the biostratigraphic marker for the base of the global Gzhelian Stage (Carboniferous). This new approach combines landmark-based geometric morphometrics with eigen analyses to analyze shape variation within P1 elements of the I. simulator group, and could be used to analyze shape variation in other morphologically similar conodont groups. Specimens analyzed were obtained from three sections of the early Gzhelian Heebner Shale of the Oread cyclothem in the North American Midcontinent region, the cyclothem from which I. simulator was originally named. This analysis shows that the I. simulator group comprises a set of at least five species with asymmetrical P1 element pairs, relatively short adcarinal ridges, and a variably developed eccentric groove. Species discrimination is based on the presence of caudal and rostral lobes, character of the adcarinal ridges, and platform shape. The species I. simulator is restricted to P1 elements with a caudal adcarinal ridge that is isolated from the caudal platform margin. Idiognathodus lateralis sp. nov. is erected to include P1 elements with a caudal adcarinal ridge that is not isolated from the caudal platform margin.
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 3; 477-502
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Carpatho-Rusyn Movement in the 21st century in North America
Autorzy:
Best, Paul J.
Powiązania:
https://bibliotekanauki.pl/articles/450236.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Łemkowie
Karpatorusini
Ameryka Północna
Lemko
Carpatho-Rusin
North America
Opis:
Artykuł podejmuje problematykę ruchu karpatorusińskiego w Ameryce w XXI wieku. Autor przedstawia narodziny i rozwój idei narodowościowej wśród migrantów z Europy Środkowo-Wschodniej. Charakteryzuje funkcjonowanie organizacji przez przybyszów w USA.
Źródło:
Przegląd Narodowościowy – Review of Nationalities; 2013, 2; 7-16
2084-848X
Pojawia się w:
Przegląd Narodowościowy – Review of Nationalities
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA
Autorzy:
Gardner, James D.
Powiązania:
https://bibliotekanauki.pl/articles/2216212.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Lissamphibia
Caudata
Batrachosauroididae
Cretaceous
Maastrichtian
Lance Formation
North America
Opis:
An incomplete salamander dentary (AMNH FARB 22965) described herein from the upper Maastrichtian Lance Formation, Wyoming, USA, exhibits a puzzling suite of features. Four features—a prominent bony trough extending anteriorly and curving upwards along the lingual surface of the ramus, lack of an obvious Meckelian fossa or groove, an apparent gap in the tooth row, and a symphysial-like first tooth—are likely anomalies. However, the remaining features are interpreted as normal structures and suggest that AMNH FARB 22965 represents a new genus and species of batrachosauroidid, an extinct family of neotenic salamanders that were prominent components of Cretaceous to Neogene freshwater and floodplain paleocommunities in North America and Europe. The new taxon differs from other batrachosauroidids in a unique suite of dentary and dental features, most notably in having a lingual bony flange paralleling the posterior two-thirds of the dentary tooth row, a prominent and robust coronoid process bearing a grooved anterior face, and the anterior portion of the corpus dentalis behind the symphysis is broadly expanded ventrolingually. The presence of a third batrachosauroidid taxon in the Lance Formation was unexpected, considering that the formation has been well sampled and that its two previously recognized batrachosauroidids, namely Opisthotriton kayi and Prodesmodon copei, are known by abundant isolated bones, including dozens of dentaries, from numerous localities in the unit and elsewhere in the North American Western Interior. Known by a unique dentary from the Bushy Tailed Blowout locality, the taxon represented by AMNH FARB 22965 evidently was uncommon within the Lance Formation paleoenvironment.
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 1; 35-50
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First North American occurrence of hairy cicadas discovered in the Cenomanian (Late Cretaceous) of Labrador, Canada
Autorzy:
Demers-Potvin, A.V.
Szwedo, J.
Paragnani, C.P.
Larsson, H.C.E.
Powiązania:
https://bibliotekanauki.pl/articles/2082146.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Insecta
Cicadoidea
Tettigarctidae
Cretaceous
Cenomanian
Redmond Formation
North America
Opis:
We report the discovery of Maculaferrum blaisi gen. et sp. nov, the first occurrence of the family Tettigarctidae, informally known as hairy cicadas, in North America. Maculaferrum blaisi is part of a new collection assembled during recent fieldwork in the Redmond Formation, Labrador, Canada, near Schefferville. It consists in a single isolated forewing whose venational characters allow a classification to Tettigarctinae at the subfamily level. Classification at a higher level remains uncertain since it displays a combination of characters supposedly unique to tribes Protabanini, Meunierini, and Tettigarctini. Thus, this discovery adds credence to suggestions of a revision of the definitions of these tribes since they seem to be based on many convergent or plesiomorphic characters. Remnants of a spotted pattern on the wing membrane and probable setae along some veins are also preserved. Observations of the holotype’s fine anatomical characters have been facilitated by the use of Reflectance Transformation Imaging (RTI), an emerging method for the visualization of compression and impression fossils. Considering that the estimated age of the Redmond Formation is the Cenomanian (Late Cretaceous), the discovery of M. blaisi contributes to a very recent expansion of the tettigarctid fossil record that fills a gap between Early Cretaceous and Cenozoic genera. It suggests that hairy cicadas maintained a global distribution and thrived in a variety of climate regimes well into the Late Cretaceous, and that their competitive exclusion by singing cicadas occurred definitely closer to the end of the Cretaceous, or even during the Cenozoic. This discovery is only the start of a thorough description of the recently expanded entomofauna in the Cretaceous of Labrador.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 1; 85-98
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contestations Over Sacred Spaces in North America
Autorzy:
Kýrová, Lucie
Racine, Nathaniel R.
Powiązania:
https://bibliotekanauki.pl/articles/27177624.pdf
Data publikacji:
2023
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Sacred Spaces
North America
Introduction
Review of International American Studies
Opis:
The article serves as an introduction to the present issue, offering the reader an insight into the Editors' overall concept, as well as an overview of the contents of the issue's "Features" section.   
Źródło:
Review of International American Studies; 2023, 16, 1; 15-30
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coldspot of decelerated sea-level rise on the Pacific coast of North America
Autorzy:
Parker, Albert
Powiązania:
https://bibliotekanauki.pl/articles/1052858.pdf
Data publikacji:
2016-09-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
sea level
measurements
tide gauges
West Coast of North America
Opis:
We show here the presence of significant “coldspot” of sea level rise along the West Coast of the United States and Canada (including Alaska). The 30-years sea level for the area are mostly falling also at subsiding locations as San Francisco and Seattle where subsidence is responsible for a long term positive rate of rise. The 20 long term tide gauges of the area of length exceeding the 60-years length have a naïve average rate of rise –0.729 mm/year in the update 30-Apr-2015, down from –0.624 mm/year in the update 14-Feb-2014. Therefore, along the West Coast of the United Statesand Canada the sea levels are on average falling, and becoming more and more negative.
Źródło:
Quaestiones Geographicae; 2016, 35, 3; 31-37
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Givetian (Middle Devonian) sharks from Cairo, New York (USA): Evidence of early cosmopolitanism
Autorzy:
Potvin-Leduc, D.
Cloutier, R.
Landing, E.
Hernick, L.V.
Mannolini, F.
Powiązania:
https://bibliotekanauki.pl/articles/945591.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Chondrichthyes
Elasmobranchii
Antarctilamnidae
Omalodontiformes
taxonomy
ontogenesis
paleobiogeography
Devonian
North America
Opis:
Whereas cosmopolitan distribution patterns are established for many Late Devonian vertebrates (e.g., placoderms, onychodontiforms), few palaeobiogeographic studies have considered chondrichthyans. Recent discoveries of shark material demonstrate that some chondrichthyans were cosmopolitan by the Middle Devonian. Abundant Givetian microremains have been recovered from the Cairo quarry in eastern New York State, USA. These include teeth of two shark species with Gondwanan affinities, the omalodontid Portalodus mannoliniae sp. nov. and the antarctilamnid Wellerodus priscus. Abundant teeth of P. mannoliniae sp. nov. are characterized by a smooth diplodont crown, polarized cusps, and a labially oriented base. The teeth demonstrate monognathic heterodonty. The juvenile morph is distinguished from the adult by smaller size, slender cusps, and variation in the shape of the base. W. priscus is represented by rare juvenile teeth. Two groups of scales that show affinity to material from northern (Spain) and East Gondwana (Antarctica) are tentatively attributed to the two described species. Antarctilamnid distribution suggests a north Gondwanan origin and a colonization of the margin of the landmass before dispersing to Laurentia by the Middle Devonian. This material further indicates that vertebrate global dispersal was initiated by the Middle Devonian, and emphasizes earlier palaeogeographic interpretations that the Middle Devonian “Hamilton fauna” of North American Laurussia originated in the Early Devonian in South American Gondwana.
Źródło:
Acta Palaeontologica Polonica; 2015, 60, 1; 183-200
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new genus of "miacid" carnivoran from the earliest Eocene of Europe and North America
Autorzy:
Smith, T.
Smith, R.
Powiązania:
https://bibliotekanauki.pl/articles/21490.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
new genus
Carnivora
systematics
Gracilocyon
Eocene
Europe
North America
Opis:
“Miacid” carnivorans comprise one of the modern mammal groups appearing around the Palaeocene–Eocene Thermal Maximum (PETM) in the Northern Hemisphere. Here we describe a new very small “miacid” carnivoran from the earliest Eocene of Dormaal, Belgium, that shares a particular dental morphology with the species “Miacis” winkleri and “Miacis” rosei from the early Eocene of North America. The three species present very gracile and sharp teeth, and are hereby placed in the new genus Gracilocyon. Comparative dental analysis of Gracilocyon with other early “miacids” contributes to better resolve the polarity of dental characters and indicates that this genus is one of the most primitive members of the family. Diversity of early modern carnivorans is greater than previously considered and early “miacids” seem to have dispersed into North America from two different geographic origins.
Źródło:
Acta Palaeontologica Polonica; 2010, 55, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Road Course in Early American Literature: Travel and Teaching from Aztlán to Amherst by Thomas Hallock (A Book Review)
Autorzy:
Racine, Nathaniel R.
Powiązania:
https://bibliotekanauki.pl/articles/2076911.pdf
Data publikacji:
2021-12-19
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Book review
Thomas Hallock
Early American Literature
Travel
Teaching
North America
Opis:
Nathaniel R. Racine's review of A Road Course in Early American Literature: Travel and Teaching from Aztlán to Amherst by Thomas Hallock.
Źródło:
Review of International American Studies; 2021, 14, 2; 157-164
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Regionalism of North America under US Dominance
Regionalizm północnoamerykański w warunkach dominacji Stanów Zjednoczonych.
Autorzy:
Gruszko, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2154748.pdf
Data publikacji:
2013-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
North America
NAFTA
Security and Prosperity Partnership
Regionalism
US Foreign Policy
Opis:
NAFTA and Security and Prosperity Partnership are the most important regional integration initiatives which determine the way and form of a new regionalism in North America. The North American integration has different roots and characteristics from the European and Asian ones. The United States as the global and regional power determines this regionalism and makes it rather ‘duallybilateral’ than multilateral. Because of its hegemonic position, the US prefers full autonomy and is reluctant both to deepen the North American cooperation and build supranational grounds for such cooperation. Several integration initiatives may be considered the US regional policy tool to protect its peripheral interests. Although under NAFTA economic issues prevail political ones, after 9/11 security issues have dominated relations in this integration grouping. Security and Prosperity Partnership which combined two compatible issues was meant to make the relations trilateral and initiate the process of building a North American community.
NAFTA i Partnerstwo dla Bezpieczeństwa i Dobrobytu (SPP) są najważniejszymi inicjatywami integracyjnymi, które wyznaczają kierunek i formę nowego regionalizmu w Ameryce Północnej. Integracja północnoamerykańska ma odmienne źródła i specyfikę od europejskiej, czy azjatyckiej. Stany Zjednoczone jako mocarstwo globalne i regionalne decydują o strukturze wzajemnych relacji, które przybierają formę raczej „podwójnie dwustronną” niż wielostronną. Jako państwo najsilniejsze, USA preferują pełną autonomię działania i z niechęcią odnoszą się do możliwości pogłębienia integracji, czy budowania ponadnarodowej płaszczyzny współpracy. Przedsięwzięcia integracyjne w Ameryce Północnej, w które Stany Zjednoczone się zaangażowały, są traktowane jako narzędzia polityki regionalnej i służą ochronie ich interesów w najbliższym sąsiedztwie. Pomimo że w ramach NAFT-y kwestie gospodarcze dominują nad politycznymi, po ataku na WTC dołączyła do nich sprawa bezpieczeństwa. Utworzenie SPP, opartego na dwóch uzupełniających się filarach, miało na celu przekształcenie struktury wzajemnych relacji w trójstronną i zainicjowanie budowania wspólnoty północnoamerykańskiej.
Źródło:
Athenaeum. Polskie Studia Politologiczne; 2013, 40; 118-128
1505-2192
Pojawia się w:
Athenaeum. Polskie Studia Politologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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