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Statements

Subject Item
n2:RIV%2F00025798%3A_____%2F13%3A00000077%21RIV14-GA0-00025798
rdf:type
n11:Vysledek skos:Concept
rdfs:seeAlso
http://agp.org.pl/table/pdf/63-2/01klapper.pdf
dcterms:description
Samples from populations of Polygnathus serotinus Telford 1975 and P. bultyncki Weddige 1977 from the Prague Basin and Nevada display normal variation for Devonian conodont species. A considerable number of previous authors, however, have proposed unnecessary synonyms of these two species, primarily because they have not recognized ontogenetic variation. In contrast, we interpret the variation as ontogenetic as well as intraspecific and present detailed synonymies as a result. A third species, P. praetrigonicus Bardashev 1992, which has been carried in open nomenclature for many years, is an important indicator of the basal costatus Zone in the Prague Basin, New York, and Nevada. We review the stratigraphic distribution of these three species and the conodont zonation across the Emsian-Eifelian (Lower-Middle Devonian) boundary. Polygnathus pseudocostatus sp. nov. (partitus-costatus zones, central Nevada) is described herein. We have observed a decrease in the pit size during ontogeny in P. bultyncki although we have not measured enough specimens to rule out intraspecific versus ontogenetic variation. Samples from populations of Polygnathus serotinus Telford 1975 and P. bultyncki Weddige 1977 from the Prague Basin and Nevada display normal variation for Devonian conodont species. A considerable number of previous authors, however, have proposed unnecessary synonyms of these two species, primarily because they have not recognized ontogenetic variation. In contrast, we interpret the variation as ontogenetic as well as intraspecific and present detailed synonymies as a result. A third species, P. praetrigonicus Bardashev 1992, which has been carried in open nomenclature for many years, is an important indicator of the basal costatus Zone in the Prague Basin, New York, and Nevada. We review the stratigraphic distribution of these three species and the conodont zonation across the Emsian-Eifelian (Lower-Middle Devonian) boundary. Polygnathus pseudocostatus sp. nov. (partitus-costatus zones, central Nevada) is described herein. We have observed a decrease in the pit size during ontogeny in P. bultyncki although we have not measured enough specimens to rule out intraspecific versus ontogenetic variation.
dcterms:title
Ontogenetic and intraspecific variation in the late Emsian – Eifelian (Devonian) conodonts Polygnathus serotinus and P. bultyncki in the Prague Basin (Czech Republic) and Nevada (western U.S.) Ontogenetic and intraspecific variation in the late Emsian – Eifelian (Devonian) conodonts Polygnathus serotinus and P. bultyncki in the Prague Basin (Czech Republic) and Nevada (western U.S.)
skos:prefLabel
Ontogenetic and intraspecific variation in the late Emsian – Eifelian (Devonian) conodonts Polygnathus serotinus and P. bultyncki in the Prague Basin (Czech Republic) and Nevada (western U.S.) Ontogenetic and intraspecific variation in the late Emsian – Eifelian (Devonian) conodonts Polygnathus serotinus and P. bultyncki in the Prague Basin (Czech Republic) and Nevada (western U.S.)
skos:notation
RIV/00025798:_____/13:00000077!RIV14-GA0-00025798
n11:predkladatel
n12:ico%3A00025798
n3:aktivita
n9:P
n3:aktivity
P(GAP210/12/2018)
n3:cisloPeriodika
2
n3:dodaniDat
n16:2014
n3:domaciTvurceVysledku
n14:4330048
n3:druhVysledku
n5:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
94069
n3:idVysledku
RIV/00025798:_____/13:00000077
n3:jazykVysledku
n13:eng
n3:klicovaSlova
Devonian, Emsian-Eifelian conodont zonation, Ontogenetic and intraspecific Variation, Taxonomic revision.
n3:klicoveSlovo
n4:Emsian-Eifelian%20conodont%20zonation n4:Ontogenetic%20and%20intraspecific%20Variation n4:Taxonomic%20revision. n4:Devonian
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[E1A87F287CAC]
n3:nazevZdroje
Acta Geologica Polonica
n3:obor
n19:DB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n6:GAP210%2F12%2F2018
n3:rokUplatneniVysledku
n16:2013
n3:svazekPeriodika
63
n3:tvurceVysledku
Klapper, Gilbert Vodrážková, Stanislava
n3:wos
000321325300001
s:issn
0001-5709
s:numberOfPages
22
n10:doi
10.2478/agp-2013-0006