The revision of "Cladodus" occidentalis, a late Palaeozoic ctenacanthiform shark

Результат исследований: Научные публикации в периодических изданияхстатья

25 Цитирования (Scopus)

Выдержка

The teeth of a well known late Palaeozoic cladodont chondrichthyan, "Cladodus" occidentalis from Russia, USA, and England are restudied and a new generic name, Glikmanius gen. nov., is proposed for this species. Yet another tooth-based species, formerly described as ?Symmorium myachkovensis, occurring on the Russian Platform and in Nebraska, is considered to belong to the newly erected genus. Although there is no direct evidence that Glikmanius possessed fin spines, the broad similarity between its teeth and those of Ctenacanthus compressus suggests it had a ctenacanthiform affinity. The possible relationships between Glikmanius, Cladodus sensu stricto, "Ctenacanthus" costellatus, and Heslerodus, are suggested. However, the proposition put forward by an earlier author that the teeth of Heslerodus might represent the lower jaw dentition of G. myachkov ensis, is rejected. The overall resemblance of Glikmanius teeth and those of Cladoselache and Squatinactis is recognised as convergent.

Язык оригиналаанглийский
Страницы (с-по)623-631
Число страниц9
ЖурналActa Palaeontologica Polonica
Том50
Номер выпуска3
СостояниеОпубликовано - 1 сен 2005

Отпечаток

shark
tooth
Paleozoic
dentition

Предметные области Scopus

  • Палеонтология

Цитировать

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title = "The revision of {"}Cladodus{"} occidentalis, a late Palaeozoic ctenacanthiform shark",
abstract = "The teeth of a well known late Palaeozoic cladodont chondrichthyan, {"}Cladodus{"} occidentalis from Russia, USA, and England are restudied and a new generic name, Glikmanius gen. nov., is proposed for this species. Yet another tooth-based species, formerly described as ?Symmorium myachkovensis, occurring on the Russian Platform and in Nebraska, is considered to belong to the newly erected genus. Although there is no direct evidence that Glikmanius possessed fin spines, the broad similarity between its teeth and those of Ctenacanthus compressus suggests it had a ctenacanthiform affinity. The possible relationships between Glikmanius, Cladodus sensu stricto, {"}Ctenacanthus{"} costellatus, and Heslerodus, are suggested. However, the proposition put forward by an earlier author that the teeth of Heslerodus might represent the lower jaw dentition of G. myachkov ensis, is rejected. The overall resemblance of Glikmanius teeth and those of Cladoselache and Squatinactis is recognised as convergent.",
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The revision of "Cladodus" occidentalis, a late Palaeozoic ctenacanthiform shark. / Ginter, Michał; Ivanov, Alexander; Lebedev, Oleg.

В: Acta Palaeontologica Polonica, Том 50, № 3, 01.09.2005, стр. 623-631.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - The revision of "Cladodus" occidentalis, a late Palaeozoic ctenacanthiform shark

AU - Ginter, Michał

AU - Ivanov, Alexander

AU - Lebedev, Oleg

PY - 2005/9/1

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N2 - The teeth of a well known late Palaeozoic cladodont chondrichthyan, "Cladodus" occidentalis from Russia, USA, and England are restudied and a new generic name, Glikmanius gen. nov., is proposed for this species. Yet another tooth-based species, formerly described as ?Symmorium myachkovensis, occurring on the Russian Platform and in Nebraska, is considered to belong to the newly erected genus. Although there is no direct evidence that Glikmanius possessed fin spines, the broad similarity between its teeth and those of Ctenacanthus compressus suggests it had a ctenacanthiform affinity. The possible relationships between Glikmanius, Cladodus sensu stricto, "Ctenacanthus" costellatus, and Heslerodus, are suggested. However, the proposition put forward by an earlier author that the teeth of Heslerodus might represent the lower jaw dentition of G. myachkov ensis, is rejected. The overall resemblance of Glikmanius teeth and those of Cladoselache and Squatinactis is recognised as convergent.

AB - The teeth of a well known late Palaeozoic cladodont chondrichthyan, "Cladodus" occidentalis from Russia, USA, and England are restudied and a new generic name, Glikmanius gen. nov., is proposed for this species. Yet another tooth-based species, formerly described as ?Symmorium myachkovensis, occurring on the Russian Platform and in Nebraska, is considered to belong to the newly erected genus. Although there is no direct evidence that Glikmanius possessed fin spines, the broad similarity between its teeth and those of Ctenacanthus compressus suggests it had a ctenacanthiform affinity. The possible relationships between Glikmanius, Cladodus sensu stricto, "Ctenacanthus" costellatus, and Heslerodus, are suggested. However, the proposition put forward by an earlier author that the teeth of Heslerodus might represent the lower jaw dentition of G. myachkov ensis, is rejected. The overall resemblance of Glikmanius teeth and those of Cladoselache and Squatinactis is recognised as convergent.

KW - Carboniferous

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KW - Permian

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