Uppermost Ordovician (upper Katian-Hirnantian) graptolites of north-central Nevada, U.S.A

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F11%3A00361335" target="_blank" >RIV/67985831:_____/11:00361335 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3140/bull.geosci.1264" target="_blank" >http://dx.doi.org/10.3140/bull.geosci.1264</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3140/bull.geosci.1264" target="_blank" >10.3140/bull.geosci.1264</a>

Result language

angličtina

Original language name

Uppermost Ordovician (upper Katian-Hirnantian) graptolites of north-central Nevada, U.S.A

Original language description

Rich graptolite fauna described from Katian and Hirnantian of central Nevada suggests that graptolite diversity decreased abruptly at the beginning of Hirnantian glaciation. Faunal turnover reached a peak in the lower part of the extraordinarius Biozone.Ordovician clades were rapidly replaced by normalograptids, presumably evolved in, and invading from, less-temperate higher latitude settings where overall graptolite diversity was extremely low already in pre-glacial times and the old fauna entirely vanished with ongoing glaciation. In tropics, however, elements of the old fauna locally survived and emerged from hypothetical refugia in the upper part of the extraordinarius Zone and, second times, in the persculptus Biozone. The last phase of mass extinction of the long-dominant Ordovician clades took place during postglacial transgression, along with major radiation among normalogratids. Reasons for ultimate extinction of the former fauna may be biological rather than environmental.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

<a href="/en/project/IAA301110908" target="_blank" >IAA301110908: Dynamics of the Upper Ordovician climax-stage faunal assemblages before global crisis controlled by climatic changes: a record from the Králův Dvůr Formation of the Barrandian area</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Bulletin of Geosciences

ISSN

1214-1119

e-ISSN

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Volume of the periodical

86

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

86

Pages from-to

301-386

UT code for WoS article

000291926200009

EID of the result in the Scopus database

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