The Serpukhovian Stage in the Verkhnyaya Kardailovka section, South Urals

Pazukhin, V. N.; Kulagina, Elena I.; Nikolaeva, Svetlana; Kochetova, N. N.; Konovalova, V. A.

doi:10.1134/s0869593810030044

Cited by 20 publications

(9 citation statements)

References 7 publications

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“…1) and in the Verkhnyaya Kardailovka section (Pazukhin et al . 2010, fig. 2), all four of the taxa listed above occur together at several horizons.…”

Section: Correlation Of the Base Of The Serpukhovianmentioning

confidence: 99%

Correlation of the base of the Serpukhovian Stage (Mississippian) in NW Europe

Sevastopulo

Barham

2013

Geol. Mag.

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“…1) and in the Verkhnyaya Kardailovka section (Pazukhin et al . 2010, fig. 2), all four of the taxa listed above occur together at several horizons.…”

Section: Correlation Of the Base Of The Serpukhovianmentioning

confidence: 99%

Correlation of the base of the Serpukhovian Stage (Mississippian) in NW Europe

Sevastopulo

Barham

2013

Geol. Mag.

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“…2010; Pazukhin et al . 2010). Even in shallower-water sections there are a large number of species in common (Groessens, 1975; Higgins, 1975; Nemirovskaya, 1985; Varker & Sevastopulo, 1985; Skompski et al .…”

Section: Correlationmentioning

confidence: 99%

“…1995; Nemyrovska, 2005; Pazukhin et al . 2010). This zone at Naqing can be correlated with the same zone in the upper beds of the Alba (equivalent to the Genicera) Formation of the Cantabrian Mountains (Adrichem-Boogaert, 1967; Menéndez-Alvaréz, 1978; Higgins & Wagner-Gentis, 1982; S. I.…”

Section: Correlationmentioning

confidence: 99%

Late Visean – early Serpukhovian conodont succession at the Naqing (Nashui) section in Guizhou, South China

Nemyrovska

Wang

et al. 2013

Geol. Mag.

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This study reports the conodont succession across the Visean–Serpukhovian (V/S) boundary interval at the Naqing section, South China. Continuous centimetre-scale sampling of the relatively deep-water section in recent years has provided new data for a more detailed biostratigraphy of conodonts across the Visean–Serpukhovian boundary. Three conodont zones were described in ascending order: the Gnathodus bilineatus, Lochriea nodosa and Lochriea ziegleri zones. The first appearance datum (FAD) of L. ziegleri has been moved down to 60.1 m above the base of the Naqing section. The correlation of the conodont succession across the Visean–Serpukhovian boundary in the Naqing section with other sections in Eurasia is discussed.

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“…2006; Kullmann et al. 2008; Pazukhin et al. 2010), but there is little sign of taxonomic consensus except that it is not a species of Lochriea (note however that Norby (1976, p. 143) speculated that L. homopunctatus ‘may well belong to Lochriea ’ but also cautioned that such an assignment required evidence from non‐P 1 elements).…”

mentioning

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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The Serpukhovian Stage in the Verkhnyaya Kardailovka section, South Urals

Cited by 20 publications

References 7 publications

Correlation of the base of the Serpukhovian Stage (Mississippian) in NW Europe

Correlation of the base of the Serpukhovian Stage (Mississippian) in NW Europe

Late Visean – early Serpukhovian conodont succession at the Naqing (Nashui) section in Guizhou, South China

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

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