Results 181 to 190 of about 1,613 (196)
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Early Tremadocian (Ordovician) graptolite biostratigraphy and correlation
Palaeoworld, 2023Jörg Maletz +2 more
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Sphenothallus (“Vermes”) from the Tremadocian Dumugol Formation, Korea
Journal of Paleontology, 1990Specimens of Sphenothallus ruedemanni (Kobayashi, 1934), which were originally assigned to Serpulites, are described from the Asaphellus Zone (Tremadocian) of the Dumugol Formation, Korea. Previously, Sphenothallus was known to occur in Middle Ordovician to Permian rocks, thus making Sphenothallus ruedemanni the earliest record of this genus.
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Tremadocian (Lower Ordovician) sea-level changes and biotas on the Avalon microcontinent
Journal of Paleontology, 2011The Chesley Drive Group, an Upper Cambrian-Lower Ordovician mudstone-dominated unit, is part of the Ediacaran–Ordovician cover sequence on the North American part of the Avalon microcontinent. The upper Chesley Drive Group on McLeod Brook, Cape Breton Island (previously “McLeod Brook Formation”), has two lithofacies-specific Tremadocian biotas.
ED Landing, Richard A. Fortey
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The Tremadocian Beds at Flagabro in South-Eastern Scania (Sweden)
Geologiska Föreningen i Stockholm Förhandlingar, 1958Abstract A drilling core from Flagabro offering a section through the entire Tremadocian of the locality is described. A report is added on the Ceratopyge Beds and the uppermost part of the Dictyonema Schales exposed at the rivulet cast of the Flagabro farmhouse. A section based on the core demonstrates that the Dictyonema Shales of the locality have a
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Tremadocian Ceratopyge Limestone identified by means of conodonts, in Jämtland, Sweden
Geologiska Föreningen i Stockholm Förhandlingar, 1991Abstract A section through the autochthonous Ordovician limestone to the east of Brunfloviken, Jamtland, central Sweden, yielded conodonts from the upper Ceratopyge and Latorp limestones. The Tremadocian Ceratopyge Limestone is represented by a 5 cm thick bed with abundant phosphorite and glauconite.
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New Species of the Genus Vulcanisphaera (Acritarcha) from the Tremadocian of England
Micropaleontology, 1976Four new species of the genus Vulcanisphaera Deunff, 1961, are described from the Shineton Shales Formation, Tremadocian, England. The type species, V. africana Deunff, was previously recorded from the Tremadocian of Africa and Belgium. It is now recorded by the present author in the Tremadocian of England.
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A Tremadocian asterozoan from Tasmania and a late Llandovery edrioasteroid from Victoria
Alcheringa: An Australasian Journal of Palaeontology, 2014Jell, P.A., 2014. A Tremadocian asterozoan from Tasmania and a late Llandovery edrioasteroid from Victoria. Alcheringa 38, 528–540. ISSN 0311-5518.An asterozoan, Maydena roadsidensis gen. et sp. nov., is described from the mid-Tremadocian (La1b Zone) Florentine Valley Formation in southwestern Tasmania and is the oldest known asterozoan in the world ...
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PALEOECOLOGY OF THE END-SKULLROCKIAN (TREMADOCIAN; EARLY ORDOVICIAN) TRILOBITE MASS EXTINCTION
Geological Society of America Abstracts with Programs, 2023Francesc Pérez-Peris +2 more
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