Results 191 to 200 of about 27,665 (229)
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Conodonts from near the Middle/Upper Devonian boundary in North Cornwall

1970
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Tabulate corals from the Ilfracombe Beds (Middle-Upper Devonian) of North Devon

1968
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Middle-Upper Devonian palynoflora from the Tonono x-1 borehole, Salta Province, Northwestern Argentina

Ameghiniana, 2010
The surveyed microflora was recovered from six cores from the Tonono x-1 well in northwestern Argentina. Most of the studied interval corresponds to the Tonono Formation, i.e., the upper part to the Jollin Member and the basal part of the interval may be related to the Michicola Formation. The microflora totals 73 species represented by trilete spores (
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A Middle–Upper Devonian Boundary Section in the Open Platform, Platform Margin Facies of Guilin, South China

Acta Geologica Sinica - English Edition, 2009
Abstract:The Caiziyan Middle and Upper Devonian boundary section is located approximately 30 km northeast of Guilin. It hosts relatively abundant benthic and common‐rare pelagic fossils, including brachiopods, corals, tentaculites, and conodonts, which may serve as a better suitable section for pelagic and neritic stratigraphic correlation.
Hua LI, Xueping MA, Longming WEI
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New tetrapodomorph vertebrates from the Yam-Tesovo locality (Amata Regional Stage, Middle–Upper Devonian) of Leningrad Region, northwestern Russia

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2018
ABSTRACTEach piece of data is valuable for unearthing the earliest history of tetrapod origin. Despite frequently incomplete preservation, each skeletal element provides important information on the morphology, phylogeny and faunistic diversity of early tetrapodomorphs. We describe here new and earlier collected material from the fossil vertebrate site
Lebedev, Oleg, Clément, Gaël
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Fossil Distribution across the Middle-Upper Devonian Boundary, Portage and Logan Canyons, North-Central Utah

Geological Society of America Bulletin, 1973
The discovery of Rensselandia cloudi Frost and Langenheim in the Samaria Limestone Member at the base of the Hyrum Formation in north-central Utah has revived the question of the age of the member and has led to a detailed study of ranges of the various elements of the fauna in the member.
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Geologic Model of the Middle-Upper Devonian Snipe Lake BHL 'A' Pool Platform-Reef Complex, Western Canada: ABSTRACT

AAPG Bulletin, 1990
The Snipe Lake BHL 'A' pool reef is one of a number of large Swan Hills atoll reef complexes of Late Devonian age in central Alberta. This study has developed a model for predicting the distribution of reservoir facies in the Snipe Lake A' pool. The reservoir description is an integral component for tailoring an appropriate depletion plan.
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High-Resolution Geochemical Analysis of Controls on Organic Matter Accumulation in the Middle-Upper Devonian Horn River Group

2020
Organic carbon-rich mudstones, or ‘black shales’, record highly anomalous perturbations of local or earth systems at critical times in earth history. Paleoenvironmental parameters, including primary productivity, redox conditions, and sedimentation rate, have been widely recognized as the controls for organic matter (OM) accumulation in shales. However,
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New finds of middle-upper Devonian radiolarians in the Rudnyi Altai region

Doklady Earth Sciences, 2009
M. S. Afanas’eva   +2 more
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