Implications paléontologiques et géodynamiques de la datation palynologique des sédiments à faciès wealdien de Bernissart (bassin de Mons, Belgique)

Yans, Johan; Dejax, Jean; Pons, Denise; Dupuis, Christian; Taquet, Philippe

doi:10.1016/j.crpv.2004.12.003

Cited by 26 publications

(24 citation statements)

References 28 publications

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“…The age of P. bernissartensis (Alvin 1957) was reported from the Puits Négresse, Bernissart, Belgium (as Pityostrobus bommeri; Alvin 1953). The Sainte Barbe Formation at Bernissart was recently dated as mid-Barremian to earliest Aptian (Yans et al 2005;range: 127.5-118.5 Ma, midpoint: 123 Ma). For the remaining Wealden taxa (P. corneti, P. heeri, and P. belgica), several recent publications were taken into account to establish an age range of 127.3-89.5 Ma (Robaszynski et al 2001;Yans et al 2005;Quinif et al 2006;Dejax et al 2007).…”

Section: Age Estimationmentioning

confidence: 99%

“…The Sainte Barbe Formation at Bernissart was recently dated as mid-Barremian to earliest Aptian (Yans et al 2005;range: 127.5-118.5 Ma, midpoint: 123 Ma). For the remaining Wealden taxa (P. corneti, P. heeri, and P. belgica), several recent publications were taken into account to establish an age range of 127.3-89.5 Ma (Robaszynski et al 2001;Yans et al 2005;Quinif et al 2006;Dejax et al 2007). However, after the phylogenetic results were considered (see ''Phylogenetic 3 GERNANDT ET AL.-FOSSIL CALIBRATION OF PINACEAE Analysis''), these taxa were ultimately not used for calibration or to apply constraints.…”

Section: Age Estimationmentioning

confidence: 99%

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Use of Simultaneous Analyses to Guide Fossil‐Based Calibrations of Pinaceae Phylogeny

Gernandt¹,

Magallón

López

et al. 2008

International Journal of Plant Sciences

130

154

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Uncertainties in the age and phylogenetic position of Pinaceae fossils present significant obstacles to our understanding of the timing of diversification in the family. We demonstrate that simultaneous phylogenetic analyses of chloroplast DNA (matK and rbcL) and nonmolecular characters that include both extant genera and a limited number of fossil taxa provide useful hypotheses for calibrating molecular trees. Root placements varied for Pinaceae, with Bayesian analyses recovering mutually monophyletic subfamilies Pinoideae and Abietoideae and parsimony analyses recovering Abietoideae as paraphyletic by placing the root between Cedrus and the remaining genera. The inferred phylogenetic positions of fossil taxa Pityostrobus bernissartensis as the sister group to Pinus and Pseudolarix erensis as the sister group to extant Pseudolarix were used to guide divergencetime calibrations; these calibrations yielded an Early Cretaceous and an Early Jurassic age for crown-group Pinaceae, respectively. The older age estimates based on Pseudolarix erensis are supported by weaker evidence from the fossil record but are consistent with recent reports of Early Cretaceous leaf fossils that appear to coincide with extant genera. There remains a great need to characterize the anatomy of extant and fossil species and to code additional nonmolecular characters.

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Section: Age Estimationmentioning

confidence: 99%

Section: Age Estimationmentioning

confidence: 99%

Use of Simultaneous Analyses to Guide Fossil‐Based Calibrations of Pinaceae Phylogeny

Gernandt¹,

Magallón

López

et al. 2008

International Journal of Plant Sciences

130

154

View full text Add to dashboard Cite

show abstract

“…Nevertheless, it remains the oldest evidence for trematodes in terrestrial predatory archosaurs (Poinar and Boucot, 2006). Age: The fossil-bearing strata are now more precisely dated to be of Late Barremian to Early Aptian age (Yans et al, 2005;Schnyder et al, 2009;Yans et al, 2012), corresponding with the upper part of magnetochron M1n, M0r and the basal part of M0n. This yields an approximate minimum age for these strata of 125.93 Ma, the age attributed to the top of magnetochron M0r by Ogg (2012), or a more conservative age of 125.7 Ma, the age assigned to the base of the Tethyan Deshayesites deshayesi ammonoid biozone (Schnyder et al, 2009) by Ogg et al (2012).…”

Section: Cretaceous Egg Remains In Terrestrial Archosaur Coprolitesmentioning

confidence: 98%

Constraining the Deep Origin of Parasitic Flatworms and Host-Interactions with Fossil Evidence

Baets¹,

Dentzien‐Dias²,

Upeniece³

et al. 2015

Fossil Parasites

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“…Moreover, recent paleomagnetic and radiometric dating revealed that numerous kaolinitic and ferruginous formations, which classically were ascribed to Tertiary ages, date back to the Lower Cretaceous period. This is the case for the deep kaolinitic profiles on the Hercynian basement in the Belgian Ardenne [ Yans , 2003; Thiry et al , 2006] and also for the siderolothic iron ore deposits in the eastern Paris Basin [ Théveniaut et al , 2007]. Additionally, the Bonherz iron ore deposits in the paleokarsts developed on the Jurassic limestone platform of the Paris Basin also have to been reconsidered as dating to the Cretaceous age, as well as paleokarst deposits in the southern Massif Central [ Thiry et al , 2006].…”

Section: Summary Of Paleomagnetic Datamentioning

confidence: 99%

Lateritic paleoweathering profiles in French Massif Central: Paleomagnetic datings

Ricordel-Prognon¹,

Lagroix²,

Moreau³

et al. 2010

J. Geophys. Res.

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[1] Geological records of the history of ancient land surfaces are scarce and often fragmented by unconformities. Determining the age of these surfaces has long been the limiting factor in correlating continental paleosurfaces with marine basin deposits. Age determination of the weathering product of continental paleosurfaces as well as weathered material within the crystalline basement, is of prime importance for geodynamic reconstruction in general and more so for assessing differential dynamics between basin and basement areas, erosion rates, etc. In this paper, we examine layers of ferruginous kaolinitic paleoweathering products overlying the basement rocks of the French Massif Central. These layers, which are mainly formed in situ and are azoic (devoid of fossils), have been classically related to the "siderolithic" (Eocene-Oligocene) period because of their geographic ties with Tertiary deposits. The paleomagnetic ages of these paleoweathered surfaces have been obtained by comparing their acquired remanent magnetization, converted into paleomagnetic poles, with the APWP (apparent polar wander path) of the Eurasian plate. Recovered ages indicate late Jurassic to early Cretaceous ages (140-160 Ma with a confidence limit of 10 Ma) which are much older than the previously assumed Tertiary age. The ages obtained in this study considerably alter the present knowledge of the geodynamic evolution of the French Massif Central. Our results suggest a lack of sedimentary cover at the Jurassic-Cretaceous boundary. This implies that at the time of deposition of the siderolithic formations, the basement was cropping out and devoid of any Mesozoic cover. Furthermore, the profiles are not compacted, indicating that they have never been buried beneath a significant sedimentary cover. The obtained ages point to a great stability of French Massif Central throughout the Mesozoic, with very low ablation-erosion, while neighbouring basins (Aquitaine and Paris) were subsiding about 2000 m.

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Implications paléontologiques et géodynamiques de la datation palynologique des sédiments à faciès wealdien de Bernissart (bassin de Mons, Belgique)

Cited by 26 publications

References 28 publications

Use of Simultaneous Analyses to Guide Fossil‐Based Calibrations of Pinaceae Phylogeny

Use of Simultaneous Analyses to Guide Fossil‐Based Calibrations of Pinaceae Phylogeny

Constraining the Deep Origin of Parasitic Flatworms and Host-Interactions with Fossil Evidence

Lateritic paleoweathering profiles in French Massif Central: Paleomagnetic datings

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