Report on the 2nd international meeting of the IUGS lower Cretaceous ammonite working group, the “Kilian Group” (Neuchâtel, Switzerland, 8 September 2005)

Reboulet, Stéphane; Hoedemaeker, Pj; Aguirre-Urreta, Marı́a B.; Alsen, Peter; Atrops, François; Baraboshkin, E. Yu.; Delanoy, Gérard; Dutour, Yves; Klein, Jaap; Latil, Jean–Louis; Lukeneder, Alexander; Митта, В. В.; Mourgues, Francisco Amaro; Ploch, Izabela; Raisossadat, Naser; Ropolo, Pierre; Sandoval, José; Tavera, José María; Vašíček, Zdeněk; Vermeulen, Jean; Arnaud, Hubert; Granier, Bruno; Premoli-Silva, Isabella

doi:10.1016/j.cretres.2006.03.006

Cited by 84 publications

(58 citation statements)

References 7 publications

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“…However, this heteroceratid assemblage is only known from a very limited number of specimens, together with ancyloceratids of the genus Pseudocrioceras Spath, 1924 which also dominate this interval. It should be noted that the validity of the P. waagenoides Subzone has been much debated because this genus is considered to be spatially restricted to the proximal margins of Tethyan basins (Bert et al 2008;Reboulet et al 2006Reboulet et al , 2011Reboulet et al , 2014. Our investigation of a laterally equivalent upper Barremian section in the vicinity of Marseille (Bouchesdu-Rhône, France) has revealed new heteroceratids-rich assemblages in the deepening succession.…”

Section: Introductionmentioning

confidence: 99%

“…Ivanov and Idakieva (2013) suggested that the heteroceratid assemblages of the "C." securiformis Zone of western Georgia and its equivalent, the "Colchidites" ratshensis horizon of the Turkmeniceras turkmenicum Zone of the Transcaspian region, are marked by a strong facies-controlled distribution that has caused it to be confused with the western Mediterranean M. sarasini Zone . These zones have been repeatedly correlated with one another, but no author have been put them in synonymy since the introduction of the standard late Barremian M. sarasini Zone (Reboulet et al 2006).The current knowledge of the distribution of late Barremian ammonites shows that the ammonite assemblage of the M. sarasini Subzone is rather similar in the whole Mediterranean-Caucasian Subrealm and the adjacent part of the Boreal-Atlantic Subrealm, with consequent great potential for biostratigraphic correlation (Reboulet et al 2014 with references). In the light of this study, there is no doubt that the peculiar heteroceratids faunas shared by the Podestat-Pouli and Tvishi sections correspond to the environmentally proximal assemblages of the base of the M. sarasini Subzone.…”

Section: Western Georgiamentioning

confidence: 99%

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New Heteroceratidae (Ammonoidea) from the late Barremian deepening succession of Marseille (Bouches-du-Rhône, France)

Frau¹,

Delanoy²,

Massé³

et al. 2016

Acta Geologica Polonica

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Investigation of the late Barremian deepening succession of the Provence platform, cropping out south of Marseille (Bouches-du-Rhône, France), has yielded a new ammonite fauna belonging to the Martelites sarasini Subzone (Martelites sarasini Zone). The fauna is dominated by representatives of the Heteroceratidae Spath, characterized by different patterns of coiling, high intraspecific variabilities and dwarfism. These heteroceratids are distinctive and utterly different from all previously known taxa, and this justifies the introduction of the new taxa Heteroceras denizoti sp. nov., Heteroceras veratiae sp. nov., Calanquites gen. nov., based on Imerites katsharavai Rouchadzé; Giovaraites gen. nov., based on Giovaraites massiliae gen. et sp. nov., Barguesiella gen. nov., based on Barguesiella goudesense gen. et sp. nov. and the closely allied Barguesiella mantei gen. et sp. nov. The occurrence of the latter species at the top of the Maiolica Formation in Italy questions its early Aptian age assumed in the literature. The newly described fauna could be considered as the first case of micromorphy in the Heteroceratidae. Its biostratigraphy, palaeoenvironmental and palaeobiogeographical significance are discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Western Georgiamentioning

confidence: 99%

New Heteroceratidae (Ammonoidea) from the late Barremian deepening succession of Marseille (Bouches-du-Rhône, France)

Frau¹,

Delanoy²,

Massé³

et al. 2016

Acta Geologica Polonica

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“…However, the literature remains dispersed and difficult to access. Many studies are outdated because ammonoid biostratigraphic knowledge is continually improving, as indicated in the numerous reports from other Lower Cretaceous localities of the Tethys (e.g., Cecca et al, 1999;Avram, 1999;Dutour, 2005;Ropolo et al, 2000;Aguado et al, 1997;Moreno-Bedmar et al 2009a, 2010aNajarro et al, 2011;Moreno-Bedmar et al, 2012a), as well as in the subsequent versions of the standard Mediterranean zonation published during the last two decades (Hoedemaeker and Bulot, 1990;Hoedemaeker et al, 1993;Hoedemaeker et al, 1995;Rawson et al, 1999;Hoedemaeker et al, 2000;Hoedemaeker et al, 2003;Reboulet et al, 2006;Reboulet et al, 2009, Reboulet et al, 2011. The stratigraphic knowledge and understanding of the Lower Cretaceous of the Maestrat Basin has also evolved and improved in recent years (e.g., Salas et al, 2001;Bover-Arnal et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Lower Cretaceous (Hauterivian-Albian) ammonite biostratigraphy in the Maestrat Basin (E Spain)

García¹,

Moreno‐Bedmar

Bover‐Arnal

et al. 2014

Journal of Iberian Geology

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A review of the stratigraphic distribution of ammonoid species in the Lower Cretaceous (Hauterivian-Albian) of the Maestrat Basin (E Spain) was carried out. The specimens were mainly collected in the field by us and are stored in university or museum collections. Specimens from private collections and figured in the literature were also studied. We recognized 73 species that are distributed, in accordance with the latest version of the standard Mediterranean ammonite zonation for the Lower Cretaceous, in 14 ammonite zones: Acanthodiscus radiatus, Crioceratites loryi, Lyticoceras nodosoplicatum (Lower Hauterivian); Pseudothurmannia ohmi (Upper Hauterivian); Imerites giraudi (Upper Barremian); Deshayesites oglanlensis, Deshayesites forbesi, Deshayesites deshayesi, Dufrenoyia furcata (Lower Aptian); Epicheloniceras martini, Parahoplites melchioris, Acanthohoplites nolani (Upper Aptian); Leymeriella tardefurcata and Douvilleiceras mammillatum (Lower Albian). The recognition of these biozones allows a precise age calibration of the Maestrat Basin's lithostatigraphic units that contain ammonoids as well as an associated indirect age calibration of the formations without ammonoids. Consequently, this report provides an updated, comprehensive and precise biostratigraphic framework, which aims to become a reference for the analysis of the Lower Cretaceous strata of the Maestrat Basin. The results are also relevant for the analysis of coeval ammonite-bearing sedimentary successions found in other Tethyan basins.Keywords: ammonites, Lower Cretaceous, biostratigraphy, Maestrat Basin, Spain Resumen En este trabajo se ha realizado una revisión detallada de la distribución estratigráfica de las especies de ammonoideos del Cretácico inferior de la Cuenca del Maestrazgo (Este de España). Los ejemplares recolectados, principalmente por los autores, han sido depositados en colecciones universitarias y museísticas. Además hemos estudiado los ejemplares de colecciones privadas y figurados en la literatura. Hemos reconocido 73 especies que se distribuyen, siguiendo la última versión de la biozonación de ammonites mediterránea estándar del Cretácico inferior, en 14 zonas de ammonoideos: Acanthodiscus radiatus, Crioceratites loryi, Lyticoceras nodosoplicatum (Hauteriviense inferior); Pseudothurmannia ohmi (Hauteriviense superior); Imerites giraudi (Barremiense superior); Deshayesites oglanlensis, Deshayesites forbesi, Deshayesites deshayesi, Dufrenoyia furcata (Aptiense inferior); Epicheloniceras martini, Parahoplites melchioris, Acanthohoplites nolani (Aptiense superior); Leymeriella tardefurcata y Douvilleiceras mammillatum (Albiense inferior). El reconocimiento de estas biozonas permite precisar la edad de las unidades litoestratigráficas que contienen ammonites y también una calibración indirecta de las formaciones que no contienen ammonites. En consecuencia este trabajo proporciona un marco bioestratigráfico actualizado, exhaustivo y preciso que pretende ser una referencia para el análisis estratigráfico del Cretácico infe...

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“…The ammonite zonation of the French Barremian (Vermeulen, 2003) has in part has been adopted by the IUGS (Reboulet & Hoedemaeker, 2006;Reboulet, et al, 2014), and was used here to estimate the age of the pliosaurid bearing beds. The two ammonite species G. galeatoides and G. provincialis, collected both below and within the skull of the pliosaurid, permits recognition of the Gerhardtia provincialis Subzone of the Gerhardtia sartousiana Zone of the lower part of the upper Barremian (i.e.…”

Section: Biostratigraphic Contextmentioning

confidence: 99%

“…The two ammonite species G. galeatoides and G. provincialis, collected both below and within the skull of the pliosaurid, permits recognition of the Gerhardtia provincialis Subzone of the Gerhardtia sartousiana Zone of the lower part of the upper Barremian (i.e. early late Barremian) of the scheme adopted by the IUGS (Reboulet & Hoedemaeker, 2006: Reboulet, et al, 2014.…”

Section: Biostratigraphic Contextmentioning

confidence: 99%

Stenorhynchosaurus munozi, gen. et sp. nov. a new pliosaurid from the Upper Barremian (Lower Cretaceous) of Villa de Leiva, Colombia, South America

Páramo-Fonseca

Gómez-Pérez²,

Noè³

et al. 2016

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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From one of the most complete Lower Cretaceous rock sequences in the world (in Villa de Leiva region, central Colombia), we describe a new genus and species of pliosaurid plesiosaur Stenorhynchosaurus munozi. Stenorhynchosaurus displays a series of features which differentiate it from all the other Cretaceous pliosaurid genera: the anterior of the vomer, in ventral view, posterior of the palatal premaxilla-maxilla suture, contacting the posterior palatal process of the premaxilla level with the third maxillary alveolus; rostrum narrow and elongated with straight sides in dorsal view; lacrimal forming the anterior border and greater part of the ventral border of the orbit and broadly borders the maxilla anteriorly; anterior interpterygoid vacuity present; internal nares located between vomer and maxilla at the level of 13 th -15 th maxillary alveoli; anterior of rostrum and mandible without lateral expansion or marked increase in size of the functional alveoli; penultimate premaxillary alveolus slightly larger than adjacent premaxillary alveoli; homodont maxillary functional alveoli, with fourth tooth positions very slightly enlarged with respect to the neighboring alveoli; homodont dentary dentition; and epipodials extremely short. Based on morphological analysis of phylogenetic characters, Stenorhynchosaurus most likely nests within the increasingly inclusive Pliosauridae and Pliosauroidea, however, as currently defined, firm inference for referral of Stenorhynchosaurus to Thalassophonea is much more problematic, but ultimately seems likely based on characters shared with Pliosaurus and Brachaucheninae. However, this uncertainty indicates Thalassophonea requires rigorous redefinition. As to whether Stenorhynchosaurus is a member of the currently exclusively Jurassic genus Pliosaurus, or the Cretaceous sub-family Brachaucheninae, remains equivocal. ResumenSe describe un nuevo género y especie de pliosáurido, Stenorhynchosaurus munozi, procedente de una de las secuencias de rocas del Cretácico Inferior más completas del mundo (en la región de Villa de Leiva, centro de Colombia). Stenorhynchosaurus exhibe una serie de características que lo diferencian de los demás géneros de pliosáuridos cretácicos: extremo anterior del vómer en vista ventral en posición posterior a la sutura palatal premaxilar-maxilar, contactando al proceso palatal del premaxilar al nivel del tercer alveolo maxilar; rostro angosto y alargado con lados rectos en vista dorsal; lagrimal formando el borde anterior y gran parte del borde ventral de la órbita y limitando ampliamente el maxilar anteriormente; cavidad inter-pterigoidea presente; narinas internas ubicadas entre el vómer y el maxilar, al nivel de los alvéolos 13 y 15; parte anterior del rostro y de la mandíbula sin expansión lateral o incremento marcado en el tamaño de los alvéolos funcionales; penúltimo alvéolo premaxilar ligeramente más grande que los adyacentes; alvéolos funcionales maxilares homodontes, el cuarto apenas más grande que los adyacentes; dentición dentaria homod...

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Report on the 2nd international meeting of the IUGS lower Cretaceous ammonite working group, the “Kilian Group” (Neuchâtel, Switzerland, 8 September 2005)

Cited by 84 publications

References 7 publications

New Heteroceratidae (Ammonoidea) from the late Barremian deepening succession of Marseille (Bouches-du-Rhône, France)

New Heteroceratidae (Ammonoidea) from the late Barremian deepening succession of Marseille (Bouches-du-Rhône, France)

Lower Cretaceous (Hauterivian-Albian) ammonite biostratigraphy in the Maestrat Basin (E Spain)

Stenorhynchosaurus munozi, gen. et sp. nov. a new pliosaurid from the Upper Barremian (Lower Cretaceous) of Villa de Leiva, Colombia, South America

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