Trilobite palaeobiodiversity during the Devonian in the Ardennes Massif

Crônier, Catherine; Viersen, Allart P. Van

doi:10.2113/gssgfbull.178.6.473

Cited by 17 publications

(23 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…). These results support the biodiversity fluctuations of trilobites observed in the Ardennes Massif during the Middle and the Late Devonian (Crônier & van Viersen ; Bignon & Crônier ). Indeed, only one association ( Dechenella Association) is identified during the Givetian whether in the mixed ramp or in the carbonate shelf.…”

Section: Discussionsupporting

confidence: 85%

“…These alternations of the platform morphology represent weak environmental changes affecting only the biodiversity at the community-level (Droser et al 1997). These results support the biodiversity fluctuations of trilobites observed in the Ardennes Massif during the Middle and the Late Devonian (Crônier & van Viersen 2007;Bignon & Crônier 2015). Indeed, only one association (Dechenella Association) is identified during the Givetian whether in the mixed ramp or in the carbonate shelf.…”

Section: Fluctuations Of the Benthic Biodiversity In The Ardennes Massupporting

confidence: 79%

“…One is restricted to the carbonate mud mounds (Scutelluinae association) and the other lives in the adjacent environments of the deep mixed ramp ( Bradocryphaeus Association). The associative succession of trilobite fauna occurring during the Middle and the Late Devonian seems to be more correlated with global events than to environmental changes recognized in the Ardennes Massif (Crônier & van Viersen ; Bignon & Crônier ). Indeed, at the end of the Eifelian, the Kačák bioevent (House ) during the ensensis conodont biozone (House ; Marshall et al .…”

Section: Discussionmentioning

confidence: 96%

“…1. Geological map of the Ardennes Massif with the location of the Mont d'Haurs section in Givet, modified after Crônier & van Viersen (2007);B, Belgium;F, France;G, Germany;L, Luxembourg;N, Netherlands. Walker 1993;Pomar 2001;Phelps et al 2008).…”

Section: Geological Settingmentioning

confidence: 99%

See 3 more Smart Citations

Siliciclastic-carbonate ramp, a hostile world for carbonate shelf fauna? The example of the Givetian Ardenne Platform

Bignon

Crônier

Hubert

2017

LET

View full text Add to dashboard Cite

The Givetian platform of the Ardennes Massif records several alternations between a siliciclastic‐carbonate ramp and a carbonate shelf. Usually these depositional contexts are considered as a major disruption implying a perturbation of many ecological parameters. We established the impact of these variations on the biodiversity structure through the study of the trophic organisation. Thanks to a previous microfacies analysis, 550 levels of the Mont d'Haurs section in Givet and ten associated environments were precisely defined. Seven palaeotrophic levels are recognized from micropalaeontological data, including benthic, planktonic, heterotroph and autotroph organisms. The spatial and temporal distributions of these levels have been analysed through means of multivariate analyses. The statistic results show that the distribution of the palaeotrophic levels during periods characterized by a mixed ramp is not significantly different than during carbonate shelf influences. These environmental modifications do not affect the community‐type. These results support recent studies performed on different benthic communities occurring in the Givetian of the Ardennes Massif. Indeed, trilobite and ostracod faunas of this period appear more affected by global environmental changes as the Kačák (uppermost Eifelian) and Taghanic (late middle Givetian) events. Moreover, along the proximal‐distal transect on the platform, the reef constitutes the most singular environment. However, contrary with the Frasnian reefs of the Ardennes Massif, which consist of carbonate mud mounds laying on a deep mixed ramp, there is no trilobite community that appears restricted to Givetian reefs. Thus global bioevents during the Middle Devonian have a more important control on the biodiversity than the platform morphology. These results support the view that at wide scales (spatial and temporal), the biodiversity responds more positively to ecological disturbances.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Fluctuations Of the Benthic Biodiversity In The Ardennes Massupporting

confidence: 79%

Section: Discussionmentioning

confidence: 96%

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

Siliciclastic-carbonate ramp, a hostile world for carbonate shelf fauna? The example of the Givetian Ardenne Platform

Bignon

Crônier

Hubert

2017

LET

View full text Add to dashboard Cite

show abstract

“…The observations above are in accordance with the data of Gill (1948) and Chlupáè (1981). Both authors noticed that during the Devonian, homalonotid trilobites were very abundant in shallow marine, siliciclastic (sand-dominated) inner shelf deposits, than in offshore, muddy bottoms (see also recent data in Crônier & van Viersen, 2007). In fact, the most spectacular occurrences of homalonotid trilobites, such as those described by Thomas (1979, "Acaste-Trimerus Association"), Fortey & Owens (1997, "Digonus Biofacies"), Mikulic (1999, "Homalonotid Association") and Sandford (2005, Trimerus moult assemblage) are associated with bioclastic concentrations that were generated in shallow water conditions (between the normal and the storm wave base).…”

Section: Stratigraphical Distribution Taphonomy and Paleoecologymentioning

confidence: 87%

Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Simões¹,

Leme²,

Soares³

2009

RBP

View full text Add to dashboard Cite

Homalonotid trilobites (Phacopida) from the Ponta Grossa Formation (Lower Devonian), Paraná State are revised. A total of 156 specimens recovered from rocks that belong to the Jaguariaíva Member (or Sequence B), of the Ponta Grossa Formation cropping out at Ponta Grossa, Tibagi and Jaguariaíva counties, were examined. Data gathered indicate that at least two species are present (Burmeisteria noticus and B. herscheli). B. noticus is a conspicuous species of the Devonian rocks of South Africa (Bokkeveld Group), Argentina (Lipéon Formation), Bolivia (Icla and Bélen Formations), and Brazil (Pimenteiras and Ponta Grossa formations). B. herscheli is common in Devonian strata on the Falkland Islands (Fox Bay Formation), South Africa (Bokkeveld Group), and Bolivia (Icla and Tarija formations), and is a newly recognized member of the trilobite fauna of the Ponta Grossa Formation. Hence, the homalonotid fauna of the Ponta Grossa Formation is not monospecific, as previously assumed. Finally, homalonotids are not randomly distributed throughout the succession of the Ponta Grossa Formation. B. herscheli shows a more restricted bathymetric distribution, preferentially occurring in sandstones and siltstones deposited just at the storm wave base. B. noticus lived and/or were preserved in sedimentary deposits varying from sandy facies, generated just in and/or above the fair weather wave base, and in muddy facies deposited below storm wave base. Despite the differences in the distribution of both species, homalonotid remains are rather abundant in the shallow water facies, deposited jus at or above storm wave base, being potentially important paleoenvironmental (neritic facies) indicators.

show abstract

Note onCyphaspis Burmeister 1843 (Trilobita, Aulacopleuridae), with a review of several species mainly from the Devonian of Belgium and Germany

Viersen

Prescher²

2007

Senckenbergiana lethaea

View full text Add to dashboard Cite

Trilobite palaeobiodiversity during the Devonian in the Ardennes Massif

Cited by 17 publications

References 19 publications

Siliciclastic-carbonate ramp, a hostile world for carbonate shelf fauna? The example of the Givetian Ardenne Platform

Siliciclastic-carbonate ramp, a hostile world for carbonate shelf fauna? The example of the Givetian Ardenne Platform

Systematics, taphonomy, and paleoecology of homalonotid trilobites (Phacopida) from the Ponta Grossa Formation

Note onCyphaspis Burmeister 1843 (Trilobita, Aulacopleuridae), with a review of several species mainly from the Devonian of Belgium and Germany

Contact Info

Product

Resources

About