2014
Early Tournaisian (Mississippian) unornamented siphonodellid conodonts: biostratigraphic and paleogeographic remarks
KUMPAN, Tomáš a Sandra I. KAISERZákladní údaje
Originální název
Early Tournaisian (Mississippian) unornamented siphonodellid conodonts: biostratigraphic and paleogeographic remarks
Autoři
KUMPAN, Tomáš (203 Česká republika, garant, domácí) a Sandra I. KAISER (276 Německo)
Vydání
15th Czech-Polish-Slovak Paleontological Conference, Banska Bystrica, Slovak Republic, 2014
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10500 1.5. Earth and related environmental sciences
Stát vydavatele
Slovensko
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14310/14:00074153
Organizační jednotka
Přírodovědecká fakulta
ISBN
978-80-224-1399-2
Klíčová slova anglicky
conodonts;Siphonodella;biostratigraphy
Změněno: 30. 11. 2014 22:55, Mgr. Tomáš Kumpan, Ph.D.
Anotace
V originále
One of the unornamented species - Siphonodella belkai - described from Poland and further known from Russian Tournaisian is the index taxa of eponymous belkai conodont zone distinguished in these regions. Sudden ventral narrowing of Si. belkai platform elements resemble platform features of Si. sandbergi and, moreover, presence of three or more (up to 7) rostral ridges is common characteristic with Si. quadruplicata. Because Si. belkai has been defined by Dzik in 1997, confusing of Si. belkai with Si. sandbergi and Si. quadruplicata is common in older, but, even in more recent publications. The misleading determination leads to stratigraphic discrepancies and older sediments of the hassi Zone are identified as younger ones (sandbergi and quadruplicata zones). The lower Tournaisian deep-water limestones (upper to lower slope) in the Rhenish Slate Mountains (Oese, Oberrödinghausen) and Moravian Karst (Lesní lom Quarry) recently yielded relatively abundant Si. belkai (Fig. 1ab) with rare unornamented Siphonodella sp. (Fig. 1c), accompanied by conodonts typical for the hassi and sandbergi zones. The first appearance datum (FAD) of Si. belkai matches with FAD of Si. hassi and therefore bases of these zones can be tentatively correlated.
Návaznosti
GAP210/11/1891, projekt VaV |
|