KFU. Card publication. The earliest chimaeriform fish from the Carboniferous of Central Russia

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FEDERAL UNIVERSITY

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THE EARLIEST CHIMAERIFORM FISH FROM THE CARBONIFEROUS OF CENTRAL RUSSIA

Form of presentation

Articles in international journals and collections

Year of publication

2021

Язык

английский

Authors, employees of KFU

Kadyrov Rail Ilgizarovich, author

Popov Evgeniy Valerievich, author

Stacenko Evgeniy Olegovich, author

Bibliographic description in the original language

Lebedev O.A, Popov E.V, Bagirov S.V, The earliest chimaeriform fish from the Carboniferous of Central Russia//Journal of Systematic Palaeontology. - 2021. - Vol.19, Is.12. - P.821-846.

Annotation

The ancestry of chimaeriform chondrichthyan fishes can be traced back to the Late Triassic (220 Ma). To date, only one chimaeriform suborder, the Echinochimaeroidei, has been recognized from the Palaeozoic. The origin and evolution of the chimaeriforms has been a matter of debate for more than a hundred years. This problem is aggravated by the scarcity of holomorphic fossils; the bulk of the material includes only hard parts of the jaw apparatus and other skeletal elements. Here we describe the oldest record of the Chimaeriformes, represented by tooth plates from the lower Carboniferous deposits (338–332 Ma) of Russia, as Protochimaera mirabilis gen. et sp. nov., and establish a new family and suborder based upon their particular morphological and histological features. The newly described tooth plates demonstrate a continuous layer of varitubate dentine over their oral surfaces; beak-shaped mandibular plates have been formed by fusion of a labial component of cutaneous origin to two others formed orally. Three separate vascular systems enabled the growth of these histological components. The beak and wear facets suggest a grasping-cutting feeding action and are the earliest example of this feeding mode in fishes after the placoderm extinction at the end of the Devonian. Phylogenetic analysis of the dental characters places these stem chimaeriforms as a sister group to the Chimaeroidei.

Keywords

Visean Stage, Serpukhovian Stage, Chimaeriformes, Holocephali, Central Russia

The name of the journal

Journal of Systematic Palaeontology

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117527715&doi=10.1080%2f14772019.2021.1977732&partnerID=40&md5=eead5310507a79138740b8c26d387a3a

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=270827&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kadyrov Rail Ilgizarovich	ru_RU
dc.contributor.author	Popov Evgeniy Valerievich	ru_RU
dc.contributor.author	Stacenko Evgeniy Olegovich	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Lebedev O.A, Popov E.V, Bagirov S.V, The earliest chimaeriform fish from the Carboniferous of Central Russia//Journal of Systematic Palaeontology. - 2021. - Vol.19, Is.12. - P.821-846.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=270827&p_lang=2	ru_RU
dc.description.abstract	Journal of Systematic Palaeontology	ru_RU
dc.description.abstract	The ancestry of chimaeriform chondrichthyan fishes can be traced back to the Late Triassic (220 Ma). To date, only one chimaeriform suborder, the Echinochimaeroidei, has been recognized from the Palaeozoic. The origin and evolution of the chimaeriforms has been a matter of debate for more than a hundred years. This problem is aggravated by the scarcity of holomorphic fossils; the bulk of the material includes only hard parts of the jaw apparatus and other skeletal elements. Here we describe the oldest record of the Chimaeriformes, represented by tooth plates from the lower Carboniferous deposits (338–332 Ma) of Russia, as Protochimaera mirabilis gen. et sp. nov., and establish a new family and suborder based upon their particular morphological and histological features. The newly described tooth plates demonstrate a continuous layer of varitubate dentine over their oral surfaces; beak-shaped mandibular plates have been formed by fusion of a labial component of cutaneous origin to two others formed orally. Three separate vascular systems enabled the growth of these histological components. The beak and wear facets suggest a grasping-cutting feeding action and are the earliest example of this feeding mode in fishes after the placoderm extinction at the end of the Devonian. Phylogenetic analysis of the dental characters places these stem chimaeriforms as a sister group to the Chimaeroidei.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Visean Stage	ru_RU
dc.subject	Serpukhovian Stage	ru_RU
dc.subject	Chimaeriformes	ru_RU
dc.subject	Holocephali	ru_RU
dc.subject	Central Russia	ru_RU
dc.title	The earliest chimaeriform fish from the Carboniferous of Central Russia	ru_RU
dc.type	Articles in international journals and collections	ru_RU