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Middle Triassic conodont assemblages from the Germanic Basin: implications for multi-element taxonomy and biogeography

Chen, Yanlong; Scholze, Frank; Richoz, Sylvain LU and Zhang, Zhifei (2018) In Journal of Systematic Palaeontology p.1-19
Abstract
Conodonts have been a key tool for biostratigraphical, evolutionary and palaeobiogeographical studies, and the Germanic
Basin has been one of the most important regions for these studies. However, few modern studies provide systematic data on
the mainly endemic conodonts of the Middle Triassic Germanic Basin. Here we document conodonts from two sections in
Germany, one Bithynian in age and the other late Anisian to early Ladinian in age. The two sections captured two episodes
of marine fauna invasion in the Germanic epicontinental basin during the Middle Triassic. The conodont Neogondolella
mombergensis, elsewhere reported as appearing globally, is reviewed and revised, confirming previous suggestions that... (More)
Conodonts have been a key tool for biostratigraphical, evolutionary and palaeobiogeographical studies, and the Germanic
Basin has been one of the most important regions for these studies. However, few modern studies provide systematic data on
the mainly endemic conodonts of the Middle Triassic Germanic Basin. Here we document conodonts from two sections in
Germany, one Bithynian in age and the other late Anisian to early Ladinian in age. The two sections captured two episodes
of marine fauna invasion in the Germanic epicontinental basin during the Middle Triassic. The conodont Neogondolella
mombergensis, elsewhere reported as appearing globally, is reviewed and revised, confirming previous suggestions that this
species only occurs in the Germanic Basin. Apparatuses of Neogondolella haslachensis and Nicoraella germanica from the
Germanic Basin are proposed. It was generally expected that S and M elements within clades have a very high morphological
stability compared to P elements. However, the apparatus of Nicoraella germanica differs significantly from that of south
China, indicating that the morphology of S elements within a genus can be unstable, and thus promotes our understanding of
conodont evolution. The rarely documented genus Gondolatus, which was suggested as representing pathological specimens,
is confirmed as a valid genus in the Germanic Basin. Our data suggest that endemic conodonts evolved twice, not only in the
Upper Muschelkalk Subgroup, but also in the Lower Muschelkalk Subgroup. (Less)
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in
Journal of Systematic Palaeontology
pages
1 - 19
publisher
Taylor & Francis
external identifiers
  • scopus:85041110120
ISSN
1477-2019
DOI
10.1080/14772019.2018.1424260
language
English
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yes
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0d750afe-5d8e-43f6-97ff-09ff7829b8b8
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https://www.tandfonline.com/doi/full/10.1080/14772019.2018.1424260
date added to LUP
2018-05-02 16:50:13
date last changed
2019-10-15 06:36:59
@article{0d750afe-5d8e-43f6-97ff-09ff7829b8b8,
  abstract     = {Conodonts have been a key tool for biostratigraphical, evolutionary and palaeobiogeographical studies, and the Germanic<br/>Basin has been one of the most important regions for these studies. However, few modern studies provide systematic data on<br/>the mainly endemic conodonts of the Middle Triassic Germanic Basin. Here we document conodonts from two sections in<br/>Germany, one Bithynian in age and the other late Anisian to early Ladinian in age. The two sections captured two episodes<br/>of marine fauna invasion in the Germanic epicontinental basin during the Middle Triassic. The conodont Neogondolella<br/>mombergensis, elsewhere reported as appearing globally, is reviewed and revised, confirming previous suggestions that this<br/>species only occurs in the Germanic Basin. Apparatuses of Neogondolella haslachensis and Nicoraella germanica from the<br/>Germanic Basin are proposed. It was generally expected that S and M elements within clades have a very high morphological<br/>stability compared to P elements. However, the apparatus of Nicoraella germanica differs significantly from that of south<br/>China, indicating that the morphology of S elements within a genus can be unstable, and thus promotes our understanding of<br/>conodont evolution. The rarely documented genus Gondolatus, which was suggested as representing pathological specimens,<br/>is confirmed as a valid genus in the Germanic Basin. Our data suggest that endemic conodonts evolved twice, not only in the<br/>Upper Muschelkalk Subgroup, but also in the Lower Muschelkalk Subgroup.},
  author       = {Chen, Yanlong and Scholze, Frank and Richoz, Sylvain and Zhang, Zhifei},
  issn         = {1477-2019},
  language     = {eng},
  month        = {01},
  pages        = {1--19},
  publisher    = {Taylor & Francis},
  series       = {Journal of Systematic Palaeontology},
  title        = {Middle Triassic conodont assemblages from the Germanic Basin: implications for multi-element taxonomy and biogeography},
  url          = {http://dx.doi.org/10.1080/14772019.2018.1424260},
  year         = {2018},
}