NEW AMMONOIDS FROM THE TOURNAISIAN-VISEAN BOUNDARY BEDS ON THE KOZHIM RIVER (SUBPOLAR URAL MOUNTAINS)

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dc.contributor.author Kusina L.F.
dc.contributor.author Konovalova V.A.
dc.date.accessioned 2022-11-03T10:21:05Z
dc.date.available 2022-11-03T10:21:05Z
dc.date.issued 2004
dc.identifier https://www.elibrary.ru/item.asp?id=13452912
dc.identifier.citation Paleontological Journal, 2004, 38, 1, 10-19
dc.identifier.issn 0031-0301
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/39343
dc.description.abstract Six new ammonoid species, Dzhaprakoceras glabrum, D. angustum, D. flexiforme, Neopericyclus polaris, Hammatocyclus incertus, and Helicocyclus aberratus, are described from the Lower Carboniferous Beds on the Kozhim River. Two species, Merocanites applanatus (Frech, 1899) and D. undulatum Riley, 1996, were first discovered in this section. In addition, two new forms assigned to gen. nov. A and gen. nov. B are figured and discussed. Analysis of previously published data on ammonoids and of new findings led to the conclusion that the Tournaisian-Visean boundary in the Kozhim section should be placed 17 m above the base of Member V between the levels of samples 2 and 3, where the genera Michiganites, Kozhimites, and Helicocyclus appear.
dc.subject ammonoid
dc.title NEW AMMONOIDS FROM THE TOURNAISIAN-VISEAN BOUNDARY BEDS ON THE KOZHIM RIVER (SUBPOLAR URAL MOUNTAINS)
dc.type Статья
dc.subject.age Paleozoic::Carboniferous::Mississippian::Middle::Visean
dc.subject.age Палеозой::Каменноугольная::Нижний::Турнейский ru
dc.subject.age Paleozoic::Carboniferous::Mississippian::Lower::Tournaisian
dc.subject.age Палеозой::Каменноугольная::Средний::Визейский ru


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