Biostrafigraphie et faunes d'ammonites du Cénomanien et du Turonien inférieur dans le sud-est de la France

Thomel, Gérard

doi:10.1006/cres.1993.1032

Cited by 8 publications

(9 citation statements)

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“…However, the morphologies of F. catinus and F. pachydiscoides seem easily distinguishable, which is why we have opted to maintain their specific division, agreeing with Santamaría-Zabala (1991. On the other hand, the ammonites assigned by Thomel (1992) to his new subspecies F. catinus niciensis seem to be evolute and compressed specimens of F. pachydiscoides. The small or almost non-existent depression of the whorl, quite uncommon within the members of the genus Fagesia Pervinquière, 1907, and the evolute coiling allows for identification of this species.…”

Section: Systematic Palaeontologymentioning

confidence: 95%

The ammonite genera Fagesia and Neoptychites (family Vascoceratidae) in the Iberian Trough, Spain

Barroso-Barcenilla¹,

Goy²

2009

Geobios

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The ammonites assigned to the genera Fagesia Pervinquière, and Neoptychites Kossmat, of the Wiedmann (Tübingen, Germany) and Goy, Carretero and Meléndez (Madrid, Spain) collections obtained from the Iberian Trough have been revised. New mainly lower Turonian specimens of the species Fagesia catinus (Mantell), F. tevesthensis (Peron), F. rudra (Stoliczka), F. superstes (Kossmat), F. pachydiscoides Spath, and Neoptychites cephalotus (Courtiller) have also been presented. In addition we have described one new species: F. mortzestus. Studies of the morphologies and the geographical and stratigraphical distributions of all these species have led to the identification of several phylogenetic relationships between them, and to distinguishing one main phase in the evolution of the family Vascoceratidae Douvillé, characterised by the dominance of Fagesia with Neoptychites. Résumé Ce travail présente une révision des ammonites des collections Wiedmann (Tübingen, Allemagne) et Goy, Carretero et Meléndez (Madrid, Espagne) qui proviennent du Bassin Ibérique et qui ont été assignées aux genres Fagesia Pervinquière et Neoptychites Kossmat. Sont également présentés de nouveaux exemplaires, majoritairement du Turonien inférieur, attribués aux espèces Fagesia catinus (Mantell), F. tevesthensis (Péron), F. rudra (Stoliczka), F. superstes (Kossmat), F. pachydiscoides Spath et Neoptychites cephalotus (Courtiller). Nous avons également décrit une nouvelle espèce : F. mortzestus. L'étude morphologique et les distributions géographiques et temporelles de ces espèces ont permis de les situer d'un point de vue phylogénétique et de distinguer une étape principale dans l'évolution de la famille Vascoceratidae Douvillé, caractérisée par la dominance de Fagesia avec Neoptychites.

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Section: Systematic Palaeontologymentioning

confidence: 95%

The ammonite genera Fagesia and Neoptychites (family Vascoceratidae) in the Iberian Trough, Spain

Barroso-Barcenilla¹,

Goy²

2009

Geobios

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“…Different paleontological studies have been dedicated to the fossil-rich Barremian deposits cropping out near Saint Laurent (Bert and Delanoy, 2000;Bert, Delanoy, & Bersac, 2006;Delanoy, 1990Delanoy, , 1992Delanoy, Magnin, Selebran, & Selebran, 1991). The Upper Cretaceous succession of the Col de Braus section was also the subject of detailed biostratigraphic analyses of planktonicforaminifera and calcareous nannofossils (Conard, 1978;Conard & Manivit, 1979), palynofacies (Götz, Feist-Burkhardt, & Ruckwied, 2008), and ammonites (Thomel, 1992).…”

Section: Geohistorical and Scientific Significance Of The Col De Braumentioning

confidence: 99%

“…This interval shows important lateral variations: at Saint Laurent it is represented by a 40-50 cm-thick bioclastic-lithoclastic conglomerate bed, followed by a 15-20 cm-thick bed of glauconitic limestone; in the eastern and southern sectors (Albaretta, Vallon du Parais) it reduces to a centimetre-thick bioclastic-lithoclastic lag resting on HG2. Thomel, 1992;Thomel & Lanteaume, 1967) In the western sector, this unit starts with a 8-10-metre-thick alternation of glaucony-rich dark marls and marly limestones, with ammonites (Lithancylus sp.) and nautiloids (Paracymatoceras sp.).…”

Section: Lower Cretaceous Successionmentioning

confidence: 99%

“…Saint Laurent Marl (early Cenomanian p.p.-late Cenomanian; Conard, 1978;Thomel, 1992) Grey, clayey-silty marls, with decimetre-thick marly limestone interbeds whose thickness and frequency increase towards the top of the unit. The fossil content in the lower part of the unit is abundant: ammonites (Mantelliceras saxbii, Schloembachia subvarians, Puzosia mayoriana, Hypoturrilites sp., Turrilites costatus, Cunningtoniceras cunningtoni ( Figure 5(h)), Acanthoceras rhotomagense, Eucalycoceras sp., Calycoceras sp., Newboldiceras sp., Phylloceratinae), terebratulids, belemnites (Neohibolites sp.…”

Section: Upper Cretaceous Successionmentioning

confidence: 99%

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The Meso–Cenozoic stratigraphic succession of the Col de Braus area (Maritime Alps, SE France)

2015

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The 1:10,000 geological map here presented extends over about 32 km 2 around the Col de Braus pass in the Maritime Alps (SE France). This area has attracted the attention of geologists since the late eighteenth century due to superb exposures of the JurassicCretaceous Provençal succession, and has become a classic geological locality continuously studied until the present day. In this area, Early Cretaceous synsedimentary tectonics is evidenced by important lateral thickness and facies variations. This sector is presently placed at the western termination of a large structural domain extending from the westernmost Ligurian Alps into the French-Italian Maritime Alps, thus representing a key-area for understanding the structural setting of this part of the Western Alps.ARTICLE HISTORY

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“…For more than a century, the Turonian of south-eastern France has been the subject of numerous studies that outlined the occurrence of significant ammonoid fauna (ROMAN, 1912;ROMAN & MAZERAN, 1913;FARAUD, 1934FARAUD, , 1936FARAUD, , 1940FARAUD, , 1951SORNAY, 1939SORNAY, , 1946SORNAY, , 1950SORNAY, , 1964MENNESSIER, 1950;LETOURNEUR & PORTHAULT, 1966;THOMEL, 1969THOMEL, , 1992THOMEL, , 1993PORTHAULT, 1974;AMÉDRO et al, 1983;DEVALQUE et al, 1983;KENNEDY, 1994;JOLET et al, 2001;DIE-BOLD, 2012;ROBASZYNSKI et al, 2014;DIEBOLD et al, 2018) and allowed the establishment of a regional biostratigraphic zonal scheme (Fig. 1) that can be used throughout western Europe (KENNEDY, 1994;ROBASZYNSKI et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The ammonoid fauna of the Prionocyclus germari Zone (upper Turonian, upper Cretaceous) from Rochefort-en-Valdaine (Drôme, France)

Baudouin¹,

Delanoy²,

Ifrim³

et al. 2018

Carnets Geol.

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T Th he e a am mm mo on no oi id d f fa au un na a o of f t th he e P Pr ri io on no oc cy yc cl lu us s g ge er rm ma ar ri i Z Zo on ne e ( (u up pp pe er r T Tu ur ro on ni ia an n, , u up pp pe er r C Cr re et ta ac ce eo ou us s) ) f fr ro om m R Ro oc ch he ef fo or rt t--e en n--V Va al ld da ai in ne e ( (D Dr rô ôm me e, , F Fr ra an nc ce) e) ) Abstract: The late Turonian ammonoid fauna of Rochefort-en-Valdaine (Drôme, France) is herein described in detail and the intraspecific variability of Vocontiiceras vocontiense DIEBOLD et al., 2018, is studied.The ammonoid assemblage (9 taxa identified) was deposited within the Prionocyclus germari Zone, which was defined in Germany, and is now also documented in southeastern France. Moreover, the co-occurrence of the heteromorph ammonoids Hyphantoceras (Hyphantoceras) flexuosum (SCHLÜ-TER) and Hyphantoceras (Hyphantoceras) ernsti WIESE indicates the lower part of the Prionocyclus germari Zone.

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Biostrafigraphie et faunes d'ammonites du Cénomanien et du Turonien inférieur dans le sud-est de la France

Cited by 8 publications

References 0 publications

The ammonite genera Fagesia and Neoptychites (family Vascoceratidae) in the Iberian Trough, Spain

The ammonite genera Fagesia and Neoptychites (family Vascoceratidae) in the Iberian Trough, Spain

The Meso–Cenozoic stratigraphic succession of the Col de Braus area (Maritime Alps, SE France)

The ammonoid fauna of the Prionocyclus germari Zone (upper Turonian, upper Cretaceous) from Rochefort-en-Valdaine (Drôme, France)

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