A new<i>Triodus</i>shark species (Xenacanthidae, Xenacanthiformes) from the lowermost Permian of France and its paleobiogeographic implications

Luccisano, Vincent; Pradel, Alan; Amiot, Romain; Gand, Georges; Steyer, Jean‐Sébastien; Cuny, Gilles

doi:10.1080/02724634.2021.1926470

Cited by 5 publications

(4 citation statements)

References 43 publications

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“…This larger basin encompassed the subsurface Arpheuilles, Contres and Brécy depocenters and the eastward smaller outcropping basins, spanning more than four hundred kilometers in length, with a roughly W-E trend ("northern Massif Central Carboniferous-Permian Basin", Figure 10). These regional connections are also confirmed by paleobiogeography data from freshwater shark remains found in the Stephano-Autunian sediments, suggesting connections between all the French LOCPB of the northern Massif Central [including the Aumance, Autun and Blanzy-Le Creusot basins as well as on a much larger scale as far away as Germany; Luccisano et al, 2021, Fischer et al, 2013, Schneider et al, 2020.…”

Section: The Brécy Depocenter Was Belonging To a Much Larger Basin-lo...mentioning

confidence: 68%

The Brécy depocenter as part of a new northern Massif Central Carboniferous–Permian Basin (France)

Beccaletto,

Bourquin

2024

Comptes Rendus. Géoscience

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The reinterpretation of deep wells and the reprocessing and interpretation of 115 km of industrial seismic lines can be used to update the geometry, depositional environments and tectonic evolution of the Carboniferous-Permian Brécy depocenter (southwest Paris Basin). The presentday geometry of the Brécy depocenter is controlled by several eastward dipping normal faults, some of which possibly connected to deep detachments that were active during the late Carboniferous-Permian history. It is estimated that the maximum thickness of the Brécy depocenter is 3900 m. The filling provides evidence for a thick late Carboniferous-lower Permian syn-rift stage overlain by a thin post-rift stage, probably similar to the tectonic evolution of the northeastward basins in the Lorraine region of France and Germany and thus attributed to the lower-middle Permian. The facies generally characterize lake environments, with occurrences of sediment supply attributed to fluvial, alluvial fan and delta fan deposits. They mainly display a retrogradational-progradational pattern during the synrift stage, and a retrogradational pattern during the post-rift stage. The Brécy area was part of a larger late Variscan basin during the latest Carboniferous-early Permian times in the northern Massif Central region.

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Section: The Brécy Depocenter Was Belonging To a Much Larger Basin-lo...mentioning

confidence: 68%

The Brécy depocenter as part of a new northern Massif Central Carboniferous–Permian Basin (France)

Beccaletto,

Bourquin

2024

Comptes Rendus. Géoscience

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“…Each European Triodus species has been thought to evolve endemically in each Carboniferous–Permian basin in which they were present, with none of the same species being present in more than one basin (Luccisano et al . 2021 a ). In contrast, some species such as O. kounoviensis and O. gracilis seem to be present in different basins, and the same basin can yield more than one Orthacanthus species (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Some xenacanth remains from this locality have recently been revised (Luccisano et al . 2021 a ). Two volcanic layers were dated to 298.05 ± 0.39 Ma and 298.57 ± 0.38 Ma (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Systematics, ontogeny and palaeobiogeography of the genus Orthacanthus (Diplodoselachidae, Xenacanthiformes) from the lower Permian of France

Luccisano

Pradel

Amiot

et al. 2022

Papers in Palaeontology

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The erection of Orthacanthus buxieri Heyler & Poplin from the lower Permian locality of Buxi eres-les-Mines (Allier, France) was based on a poorly prepared specimen with only a few parts of its anatomy visible. The supposedly related teeth have been regarded as possibly belonging to O. kounoviensis, a species already known from the Carboniferous-Permian of Germany and Czech Republic. The holotype of O. buxieri requires extensive preparation before it can be revised, but the description of Orthacanthus isolated teeth and dorsal spines from Buxi eres-les-Mines nevertheless provides useful information, especially given that no precise description of this material has been provided so far. The aim of this description is to better understand the evolutionary history of the French Orthacanthus and its relationships with the other European species. The studied material is assigned to O. kounoviensis. This is the latest occurrence of this genus in Europe and the presence of both juvenile and adult teeth indicate that Buxi eres-les-Mines was probably one of the last suitable environments for its reproduction. We also identify Orthacanthus cf. kounoviensis from the Muse oil-shale bed, the first record of this genus in the Autun Basin. This brings into question the relationships between the different Carboniferous-Permian basins of the Northern Massif Central and suggests that they could still have been in connection during the lower Permian, in contrast to the central European basins, which seem to be more isolated from each other.

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“…6d), and are very rich in fish remains (e.g., scales, coprolites, Fig. 6f), even containing selachian coprolites (freshwater sharks, already found in Western European CP basins such as the Aumance, Blanzy-Le Creusot, Autun, or Saar-Nahe basins, Fischer et al 2013;Schneider and Zajic 1994;Schneider et al 2000;Luccisano et al 2021). The heterolithic facies are constituted by massive claystones to siltstones alternating with fine to medium-grained sandstones, always massive (i.e., F/Sm facies), never showing current features, but sometimes showing bioturbations (Table 1).…”

Section: Facies Association P2 and P2amentioning

confidence: 95%

Reconsidering Carboniferous–Permian continental paleoenvironments in eastern equatorial Pangea: facies and sequence stratigraphy investigations in the Autun Basin (France)

Mercuzot

Bourquin

Pellenard

et al. 2022

Int J Earth Sci (Geol Rundsch)

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A newTriodusshark species (Xenacanthidae, Xenacanthiformes) from the lowermost Permian of France and its paleobiogeographic implications

Cited by 5 publications

References 43 publications

The Brécy depocenter as part of a new northern Massif Central Carboniferous–Permian Basin (France)

The Brécy depocenter as part of a new northern Massif Central Carboniferous–Permian Basin (France)

Systematics, ontogeny and palaeobiogeography of the genus Orthacanthus (Diplodoselachidae, Xenacanthiformes) from the lower Permian of France

Reconsidering Carboniferous–Permian continental paleoenvironments in eastern equatorial Pangea: facies and sequence stratigraphy investigations in the Autun Basin (France)

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