On Moscovian (Late Carboniferous) conodonts of the Donets Basin, Ukraine

Nemyrovska, Tamara I.; Алексеев, А. С.

doi:10.1127/njgpa/214/1999/169

Cited by 35 publications

(48 citation statements)

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“…(1994, p. 288) did not explicitly question the phylogenetic hypothesis but noted that ‘the use of this evolutionary series as sole evidence for a complete boundary sequence should be treated with caution until the full stratigraphic range of all the taxa has been confirmed from other sections.’ Other authors have proposed alternative hypotheses of relationship for D. noduliferus : both Grayson et al. (1991) and Nemyrovska (1999), for example, suggested that D. noduliferus arose within a clade that includes the type species of Gnathodus (i.e. G. bilineatus ) but does not include G. girtyi .…”

Section: Discussionmentioning

confidence: 99%

Cladistic tests of monophyly and relationships of biostratigraphically significant conodonts using multielement skeletal data –Lochriea homopunctatus and the genus Lochriea

Atakul‐Özdemir

Purnell

Riley³

2012

Palaeontology

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Since the 1960s, huge progress has been made in reconstructing the multielement skeletons of conodont species and developing a biologically defensible taxonomy. Nevertheless, a widespread prejudice remains that certain parts of the conodont skeleton, particularly the P1 elements, are more informative than others with regard to taxonomy and evolutionary relationships. Here, we test these views. A new partial multielement reconstruction of the skeleton of the biostratigraphically significant conodont originally described as Gnathodus commutatus homopunctatus allows us to conduct a cladistic test of the alternative hypotheses of phylogenetic placement of this species. Our analysis also provides the first test of the hypothesis that Lochriea– species of which are markers for global correlation – is monophyletic and tests hypotheses concerning the origins of the genus. Our results demonstrate that homopunctatus is a species of Lochriea and that the genus is monophyletic. The widely held view that Lochriea arose from a species of Bispathodus is not supported. Our results show that it is difficult to predict a priori which parts of the conodont skeleton carry phylogenetic signal, and provide strong support for the hypothesis that similarity in the morphology of conodont P1 elements alone is not a reliable guide to relationships and taxonomic groupings of conodont species. This is because P1 elements with similar morphologies are convergently acquired in multiple conodont clades, because reliance on the characters of only one of the six or seven morphologically distinct elements of the conodont skeleton ignores phylogenetically significant data and because P1 elements can lack characters that might seem to be diagnostic of a genus. Conodonts are no different to other organisms: ignoring data that have the potential to be phylogenetically informative is unlikely to produce the most reliable hypotheses of evolutionary relationships. We suggest that other biostratigraphically significant hypotheses of relationship between conodont taxa that are based on P1 elements alone should be subject to cladistic testing.

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Section: Discussionmentioning

confidence: 99%

Cladistic tests of monophyly and relationships of biostratigraphically significant conodonts using multielement skeletal data –Lochriea homopunctatus and the genus Lochriea

Atakul‐Özdemir

Purnell

Riley³

2012

Palaeontology

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“…So far, several conodont lineages have been proposed to provide a global fossil marker (Groves & Task Group, 2004;Alekseev & Task Group, 2013), the first appearance of Declinognathodus donetzianus Nemyrovska, 1999, being one of the strongest candidates (Groves & Task Group, 2007). The fusuline genus Eofusulina has also been suggested as an auxiliary tool for boundary correlation in Eurasian Carboniferous areas (Groves & Task Group, 2011).…”

Section: Introductionmentioning

confidence: 99%

Fusulines From the Bashkirian/Moscovian Transition in the Carboniferous of the Cantabrian Zone (Nw Spain)

Villa¹,

Merino-Tomé²

2016

Journal of Foraminiferal Research

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“…G. postbilineatus appeared at almost the same time as the earliest Bashkirian homoceratid ammonoids in Central Asia, where Nigmadganov and Nemirovskaya (1992) established their G. postbilineatus Zone. G. postbilineatus occurs with ammonoids correlated with the late Arnsbergian E 2c 1 ammonoid subzone in the Donets Basin (Nemyrovska 1999), and Varker (1994) also illustrated it from the E 2c 3 and E 2c 4 ammonoid subzones of Stonehead Beck, Yorkshire.…”

Section: Geological Implications Of Conodont Faunamentioning

confidence: 99%

“…Later, many authors used the presence of G. b. bollandensis Higgins and Bouckaert, 1968 as an Arnsbergian marker. A G. postbilineatus Zone was recognized by Nigmadganov and Nemirovskaya (1992) in the upper Arnsbergian of Central Asia, and by Nemyrovska (1999) in Eastern Europe.…”

mentioning

confidence: 99%

Serpukhovian Conodonts From Northern Spain and Their Biostratigraphic Application

Sanz-López¹,

Blanco-Ferrera

Posada

et al. 2007

Palaeontology

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On Moscovian (Late Carboniferous) conodonts of the Donets Basin, Ukraine

Cited by 35 publications

References 0 publications

Cladistic tests of monophyly and relationships of biostratigraphically significant conodonts using multielement skeletal data –Lochriea homopunctatus and the genus Lochriea

Cladistic tests of monophyly and relationships of biostratigraphically significant conodonts using multielement skeletal data –Lochriea homopunctatus and the genus Lochriea

Fusulines From the Bashkirian/Moscovian Transition in the Carboniferous of the Cantabrian Zone (Nw Spain)

Serpukhovian Conodonts From Northern Spain and Their Biostratigraphic Application

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