Results 171 to 180 of about 1,613 (196)

Depositional framework of the East Baltic Tremadocian black shale revisited

GFF, 2014
This article presents a centimetre- to micrometre-scale study of sedimentary fabrics from Lower Ordovician metalliferous black shale from the Baltic palaeobasin. Two sections of the Turisalu Fm. NW and NE Estonia were analysed with light microscopy and scanning electron microscopy. This rock unit is characterised by mostly thin bedding ( 
Rutt Hints, Sigrid Hade, Alvar Soesoo, Margus Voolma   +3 more
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Late Tremadocian chitinozoans and acritarchs from northwestern Argentina (Western Gondwana)

Review of Palaeobotany and Palynology, 2009
Abstract Chitinozoans and acritarchs are recorded from the Saladillo and Parcha formations of the Pascha-Incamayo area (Salta Province), Cordillera Oriental, northwestern Argentina. These organic microfossils coexist with graptolites of the Kiaerograptus , Araneograptus murrayi and Hunnegraptus copiosus biozones of early late Tremadocian and ...
G. Susana de la Puente, Claudia V. Rubinstein   +1 more
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Tremadocian (Early Ordovician) chitinozoan biostratigraphy of South China: An update

Review of Palaeobotany and Palynology, 2017
Abstract The lowest Ordovician (Tremadocian) chitinozoan biostratigraphy of the South China Palaeoplate has been reviewed and updated, based on new investigation from the Upper Yangtze area. The systematic paleontology of Lagenochitina pestovoensis Obut 1973 and Lagenochitina destombesi Elaouad-Debbaj 1988, has been revised.
Yan Liang, Thomas Servais, Peng Tang, Jianbo Liu, Wenhui Wang   +4 more
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Some Upper Tremadocian graptolites from Norway

1963
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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The Brattefors plugs: Collapse structures initiated during a Tremadocian regression

Geologiska Föreningen i Stockholm Förhandlingar, 1988
Abstract At Brattefors on the southern slope of Kinnekulle, Vastergotland, Sweden, Upper Cambrian bituminous shale is cut by plugs consisting of a thick, relatively undisturbed succession of Tremadocian Ceratopyge Shale otherwise not represented in the vicinity. Drillcores show the plugs to reach down into Lower Cambrian sandstone.
Rüdiger Teves, Maurits Lindström
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Tremadocian (Ordovician) biostratigraphy and graptolites at Dayangcha (Baishan, Jilin, NE China)

Paläontologische Zeitschrift, 2004
Based on a systematic study of Tremadocian graptolites from the Early Ordovician Yehli Formation at Dayangcha, Baishan of Jilin, NE China, a revised graptolite zonation is proposed for the Tremadocian rocks in the area. In ascending order, the graptolite zones include theRhabdinopora flabelliformis parabola Zone, theAnisograptus matanensis Zone ...
Yuandong Zhang, Bernd -D. Erdtmann
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AN ASSEMBLAGE OF MICROPLANKTON FROM THE SHINETON SHALES (TREMADOCIAN)

Proceedings of the Yorkshire Geological Society, 1958
Summary A prolific assemblage of microplankton from the Shineton Shales (Tremadocian) is described. It consists almost entirely of hystrichospheres, including several new species of Hystrichosphaeridium, Micrhystridium, Veryhachium, Leiosphaeridia and Diornatosphaera gen. nov.
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Early orthid brachiopods from the Tremadocian (Lower Ordovician) of northwestern Argentina

Journal of Paleontology, 2009
Two brachiopod species of two of the earliest rhynchonelliformean families are described from one of the first studied Ordovician fossiliferous localities of northwestern Argentina. One is a new species of the family Euorthisinidae (Orthida, Plectorthoidea),Notorthisina musculosaVillas and Herrera.
Enrique Villas, Zarela A. Herrera, Gladys C. Ortega   +2 more
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Dictyonema from the Tremadocian of Estonia and Norway

Geological Magazine, 1966
AbstractThe Dictyonema species currently named flabelliforme (Eichwald) (as distinct from D. norvegicum Kjerulf) from the Tremadocian of Estonia is described and compared with the lectotype of Kjerulf's D. graptolithinum from Norway, and their synonymy is confirmed.
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An unusual onychochilid mollusc from the Ordovician (Tremadocian) Fezouata Formation, Morocco

Geobios, 2015
Pelecyogyra fezouataensis nov. gen., nov. sp. is described from the Lower Ordovician (Tremadocian, A. murrayi Biozone) Fezouata Formation at Oued Beni Zoli (locality Z-F5), in the central Anti-Atlas, Morocco. This is the first Onychochilidae Koken in Koken and Perner, 1925 reported from the Ordovician of Morocco.
Ebbestad, Jan Ove R., Lefebvre, Bertrand
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