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dc.contributor.author
Bault, Valentin
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dc.contributor.author
Crônier, Catherine
dc.contributor.author
Bignon, Arnaud Marcel Jacques
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dc.date.available
2023-10-31T19:01:12Z
dc.date.issued
2022-05
dc.identifier.citation
Bault, Valentin; Crônier, Catherine; Bignon, Arnaud Marcel Jacques; The influence of palaeogeography and tectonic events on trilobite distributions in Morocco and northwestern Algeria; Cambridge University Press; Geological Magazine; 159; 5; 5-2022; 707-729
dc.identifier.issn
0016-7568
dc.identifier.uri
http://hdl.handle.net/11336/216711
dc.description.abstract
The effects of sea-level changes and anoxia on Devonian trilobites have been studied for a long time, but the importance of palaeogeographic and tectonic events in this key-period is still not well understood. In the Devonian Period, trilobites invaded many different marine environments and areas in North Africa where important palaeogeographic changes occurred. Distribution patterns of trilobites through time and space have been analysed using a hierarchical cluster analysis and diversity indices. Our examination of the literature suggests that trilobites were scarce during Lochkovian time before an important diversification in Pragian time. Trilobites flourished in many North African regions without there being important taxonomic differences between basins, because of free migration in relatively flat palaeo-topography and homogeneous environments. During Middle Devonian time, early Variscan tectonic movements transformed the eastern Anti-Atlas area into a basin with a platform topography. Geographical barriers such as deep basins prevented trilobite migrations. At the beginning of Eifelian time, the reduction in migration between the different regions of this area coincided with a decrease in diversity. Consequently, tectonic events played an important role in the decline of trilobites during Middle Devonian time, especially when these were combined with sea-level changes and anoxic/hypoxic events. A recovery occurred in Famennian time involving only new genera. As at the global scale, cyrtosymbolines developed in shallow seas, whereas phacopids evolved in deeper environments. The basin and platform system still hampered migrations, although sea-level variations led to episodic exchanges. The late Famennian regression reduced trilobite diversity dramatically in the study area.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANTI-ATLAS
dc.subject
ARTHROPODS
dc.subject
ASSOCIATIONS
dc.subject
DIVERSITY
dc.subject
FAUNAL SUCCESSION
dc.subject
PALAEOBIOGEOGRAPHY
dc.subject
TECTONIC
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The influence of palaeogeography and tectonic events on trilobite distributions in Morocco and northwestern Algeria
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-10-31T17:48:47Z
dc.journal.volume
159
dc.journal.number
5
dc.journal.pagination
707-729
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Bault, Valentin. Université de Lille; Francia
dc.description.fil
Fil: Crônier, Catherine. Université de Lille; Francia
dc.description.fil
Fil: Bignon, Arnaud Marcel Jacques. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
dc.journal.title
Geological Magazine
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/geological-magazine/article/abs/influence-of-palaeogeography-and-tectonic-events-on-trilobite-distributions-in-morocco-and-northwestern-algeria/98978685BB834286C7898D922B6BE571
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S001675682100131X
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