The Dzerzhinka Section (eastern slope of the South Urals): an overview of the fauna and facies around the Devonian-Carboniferous boundary

Alekseev, Alexandr A.; Мизенс, Анита Гунаровна; Мизенс, Лариса Ивановна; Nikolaeva, Svetlana; Горожанин, В. М.; Kulagina, Elena I.; Gatovsky, Yu. A.; Горожанина, Е. Н.

doi:10.29041/strat.14.1-4.143-178

Cited by 3 publications

(1 citation statement)

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“…An incomplete spine of an euselachian shark was found in the upper Famennian Kushelga RS in an outcrop in Dzerzhinka (Popovskiy) village, Chelyabinsk Region, South Urals (Gatovsky et al 2017; Textfig. 1D).…”

Section: Amelacanthusmentioning

confidence: 99%

Acta Geologica Polonica

Lebedev

Ivanov

Linkevich

2020

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Very rare chondrichthyan spines from the Famennian (Upper Devonian) of European Russia are referred here to ctenacanthiforms, euselachians and a chondrichthyan group of uncertain systematic position. Ctenacanthus Agassiz, 1837 is recorded from the lower and middle Famennian of the central and north-western parts of the area. Sculptospina makhlaevi Lebedev gen. et sp. nov. originates from the lower Famennian of the Lipetsk Region. The holotype of ‘Ctenacanthus’ jaekeli Gross, 1933 and a new specimen from the upper Famennian of the South Urals are shown to belong to the same taxon, which is transferred to Acondylacanthus St. John and Worthen, 1875. New specimens of Tuberospina nataliae Lebedev, 1995 from the upper Famennian of Central Russia are described in detail. The newly presented material increases our knowledge of the composition of Famennian marine assemblages from the East European Platform. It is suggested that these assemblages may be classified as chondrichthyan-dominated and dipnoan-dominated. Hypothetically, after the end- Devonian Hangenberg extinction event, which affected numerous secondary consumers in vertebrate communities, some chondrichthyan groups could have encroached to take advantage of previously occupied ecological niches. Ctenacanthus, as well as Acondylacanthus and Amelacanthus survived the end-Devonian mass extinction to continue into the Carboniferous.

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Section: Amelacanthusmentioning

confidence: 99%