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Wyszukujesz frazę "missisip" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Do partly outdated palaeontological data produce just a noise? An assessment of the Middle Devonian-Mississippian biodiversity dynamics in central Asia on the basis of Soviet-time compilations
Autorzy:
Ruban, Dmitry A.
Powiązania:
https://bibliotekanauki.pl/articles/94488.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
palaeontological data
palaeobiodiversity
mass extinctions
Middle Devonian
Late Devonian
Mississippian
central Asia
dane paleontologiczne
masa wymarła
środkowy dewon
późny dewon
missisip
centralna Azja
Opis:
Interregional tracing of trends and events in the biotic evolution is an important task of modern palaeobiology. In Soviet times (1917-1991), numerous palaeontological data have collected for the territory of Russia and neighbouring U.S.S.R. countries. Later, these data were compiled and published in a series of reference volumes. Although this information cannot be updated in a conventional way, it remains valuable for quantitative analyses, particularly because of its comprehensive and unique character. Assessment of the previously collected data on the stratigraphic distribution of Middle Devonian-Mississippian marine invertebrates in three regions of central Asia (central Kazakhstan, Uzbekistan and Tajikistan) reveals some general patterns of biodiversity dynamics. The total number of genera generally declined during the Givetian-Famennian, whereas a remarkable diversity peak occurred in the Visean. This is consistent with the global pattern and, thus, permits to hypothesize a regional signature of the global trends. Changes in the extinction rate differ, however, between central Asia and the Earth in its entirety, which may be explained particularly by biases in either the regional or the global records. Evidence of the Givetian and Frasnian/Famennian mass extinctions is found in the three regions under study. Results of this tentative study indicate important directions for further research and suggest that central Asia is a highly important domain for studies of mid-Palaeozoic biodiversity dynamics.
Źródło:
Geologos; 2011, 17, 1; 29-47
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early Bashkirian Rugosa (Anthozoa) from the Donets Basin (Ukraine). Part 5. The Family Bothrophyllidae Fomichev, 1953
Autorzy:
Fedorowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/139366.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Late Mississippian
Early Pennsylvanian
Bothrophyllidae
taxonomy
microstructure vs. diagenesis
relationships vs. similarity
missisip
pensylwan
taksonomia
mikrostruktura
diageneza
relacje
podobieństwo
Opis:
Four genera (one new, one questionable), seven named species (five new) and five taxa left in open nomenclature are described from uppermost Serpukhovian (Limestone D53) to middle Bashkirian (Limestone G11) strata. A new genus: Nina and the new species: Bothrophyllum kalmyussi, B. gorbachevensis, Nina donetsiana, N. dibimitaria and N. magna are introduced. The genus Cystilophophyllum Fomichev, 1953 is redefined and transferred to the Family Bothrophyllidae. Three general topics discussed in the Considerations are: 1. The taxonomic value of the microstructure of the septa and the necessity for a distinction between that character and diagenetic alterations; 2. Depositional conditions, under which the rugose coral skeletons were deposited; 3. The similarity of skeletal constructions vs. relationships in some taxa of the Subfamily Dibunophyllinae Wang, 1950 and the Family Bothrophyllidae Fomichev, 1953. The lack of final conclusions in the matter of the relationships is due to the incompleteness and restricted number of specimens studied herein and the incomplete investigations of a great majority of the earlier described bothrophyllid taxa.
Źródło:
Acta Geologica Polonica; 2017, 67, 2; 249-298
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vojnovskytesidae – a new family of Mississippian Rugosa (Anthozoa)
Autorzy:
Fedorowski, J.
Kullmann, J.
Powiązania:
https://bibliotekanauki.pl/articles/138670.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Rugosa (Anthozoa)
New family Vojnovskytesidae
taxonomy
Mississippian
Spain
koralowce
Vojnovskytesidae
taksonomia
missisip
Hiszpania
Opis:
Two new species of the genus Vojnovskytes Fedorowski, 2009, namely V. marcinowskii and V. arcuatus, and a new genus, Vojnimitor, based on the new species V. proiectus, all from Mississippian strata of northern Spain, are described. Vojnovskytes variabilis (Vojnovsky-Krieger, 1934), the type species for the genus from the lowermost Viséan strata of southern Urals, also is discussed and illustrated. Characters displayed by the taxa mentioned permit introduction of a new family Vojnovskytesidae.
Źródło:
Acta Geologica Polonica; 2013, 63, 4; 657-679
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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