Cretaceous (Albian to Coniacian) Ostracodes from the subsurface of the Jaisalmer Basin, Rajasthan, India

• Main Authors: Andreu, Bernard, Colin, Jean-Paul, Singh, Jagmohan
• Other Authors: Laboratoire des Mécanismes et Transfert en Géologie (LMTG), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2007
• Subjects: PALEOBIOGEOGRAPHY; ASSOCIATIONS; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Planktonic foraminifera
• Online Access: https://hal.science/hal-00319544

International audience In the Albian to Coniacian subsurface series of Jaisalmer Basin, Rajasthan, India, the distribution of ostracode assemblages is proposed, calibrated using planktonic foraminifera biozones of the global standard stages. Ninety species, 19 named and 71 in open nomenclature, belonging to 45 known genera and one unknown, are indexed; their first and last appearance (or first and last observation)levels, compared with the stage boundaries, are used as biostratigraphical guide markers. The ostracode assemblages enable us to recognize and define the Cenomanian, Turonian and Coniacian stages. Cenomanian-Turonian faunistic communications appear between the Jaisalmer Basin and different countries of the southern Tethyan margins and the eastern and western Atlantic borderlands.