Report on the 4th International Meeting of the IUGS Lower Cretaceous ammonite working group, the "Kilian Group" (Dijon, France, 30th August 2010). - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Cretaceous Research Année : 2011

Report on the 4th International Meeting of the IUGS Lower Cretaceous ammonite working group, the "Kilian Group" (Dijon, France, 30th August 2010).

Yuri Bogomolov
  • Fonction : Auteur
Bertrand Matrion
  • Fonction : Auteur
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Didier Bert
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  • PersonId : 858342
Stéphane Bersac
  • Fonction : Auteur
Luc G. Bulot
Jean-Louis Latil
  • Fonction : Auteur
Pierre Ropolo
  • Fonction : Auteur

Résumé

The 4th Kilian Group meeting (Dijon, France, 30th August 2010) focused on the Aptian and Albian Stages. For the Aptian, a two-fold division of the stage was adopted for the Mediterranean area with a boundary between the Dufrenoyia furcata and Epicheloniceras martini Zones. The main changes to the zonal scheme concern the Lower Aptian with: the introduction of a Deshayesites luppovi Subzone in the upper part of the Deshayesites oglanlensis Zone; the replacement of Deshayesites weissi by Deshayesites forbesi as new indexspecies of the second interval zone; the introduction of a Roloboceras hambrovi Subzone in the upper part of the D. forbesi Zone; and the subdivision of the D. furcata Zone into the D. furcata and Dufrenoyia dufrenoyi Subzones. For the Albian, the upper part of the Douvilleiceras mammillatum Zone (Lower Albian) is now characterized by a Lyelliceras pseudolyelli Subzone. The main amendments concern the Upper Albian. The base of this substage is defined by the base of the Dipoloceras cristatum Zone. Above it, the Upper Albian zonal scheme comprises in stratigraphic order the Mortoniceras pricei, Mortoniceras inflatum, Mortoniceras fallax, Mortoniceras rostratum, Mortoniceras perinflatum and Arrhaphoceras briacensis Zones.

Dates et versions

hal-00615622 , version 1 (19-08-2011)

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Citer

Stéphane Reboulet, Peter F. Rawson, Josep A. Moreno-Bedmar, Maria B. Aguirre-Urreta, Ricardo Barragán, et al.. Report on the 4th International Meeting of the IUGS Lower Cretaceous ammonite working group, the "Kilian Group" (Dijon, France, 30th August 2010).. Cretaceous Research, 2011, 32 (6), pp.786-793. ⟨10.1016/j.cretres.2011.05.007⟩. ⟨hal-00615622⟩
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