Results 201 to 210 of about 6,764 (250)
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Graptolites in British stratigraphy
Geological Magazine, 2009Abstract697 taxa of planktonic graptolites are recorded, and their stratigraphical ranges are given, through 60 biozones and subzones in the Ordovician and Silurian strata of England, Wales and Scotland, in the first such stratigraphical compilation for Great Britain since the synthesis of Elles & Wood (1901–1918).
Zalasiewicz, J. +5 more
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Transactions of the Geological Society of Glasgow, 1882
I n the first edition of his famous work, the “Systema Naturæ,” published in 1736, the great Swedish naturalist, Linnæus, proposed the name Graptolithus for certain natural markings occasionally found upon stones, which are not true fossils, but are mere superficial stainings, having the ...
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I n the first edition of his famous work, the “Systema Naturæ,” published in 1736, the great Swedish naturalist, Linnæus, proposed the name Graptolithus for certain natural markings occasionally found upon stones, which are not true fossils, but are mere superficial stainings, having the ...
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Hugh Miller's graptolite revisited
Geological Curator, 2004Hugh Miller's graptolite from Macduff was shown in 1973 to have been mistakenly localised, probably by Dr Emslie of Banff. Dr Emslie was a member of the Banff Institution. A second graptolite, presented to Banff Museum (but now lost) by another Banff Institution member is shown to have been probably also wrongly localised. Old records of specimens in
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Canadian Journal of Earth Sciences, 1995
Integration of graptolite data obtained from isolated and flattened material from Arctic Canada permits the recognition of three upper Homerian biostratigraphic zones. These, from oldest to youngest, are the Pristiograptus dubius – Gothograptus "nassa" interval Biozone, Colonograptus? praedeubeli – Colonograptus?
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Integration of graptolite data obtained from isolated and flattened material from Arctic Canada permits the recognition of three upper Homerian biostratigraphic zones. These, from oldest to youngest, are the Pristiograptus dubius – Gothograptus "nassa" interval Biozone, Colonograptus? praedeubeli – Colonograptus?
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Victorian Graptolites: Part II. The Graptolites of the Lancefield Beds
1899(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Upper Silurian and Lower Devonian graptolites and graptolite biostratigraphy, northern Yukon, Canada
Canadian Journal of Earth Sciences, 1988Upper Silurian and Lower Devonian graptolite biostratigraphy of the northern Canadian Cordillera is revised in the light of new data. The zones, listed in order of oldest to youngest, are Lobograptus progenitor, Saetograptus fritschi linearis, and Bohemograptus bohemicus tenuis: Ludlow; Monograptus formosus, Pristiograptus ultimus, Pristiograptus ...
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Graptolite biozone correlation charts
Geological Magazine, 2011AbstractCharts are presented showing the correlation of graptolite biozonations for the Lower Ordovician to Lower Devonian, i.e. for the entire stratigraphical range of the planktonic graptoloid graptolites. Regions chosen are those for which the most detailed biostratigraphical studies have been undertaken. For Baltica, average graptolite zone (chron)
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Graptolite Preservation and Deformation
PALAIOS, 1992The preservation of graptolites as pale films is characteristic of many low grade metamorphic lower Paleozoic rocks. A study of such fossils at Abereiddy Bay, South Wales allows an interpretation of the abundant graptolite fauna under varying conditions of bedding-cleavage relationship. Similar phenomena are also documented from other localities.
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