Episodes 2017; 40(3): 177-188
Published online September 1, 2017
Copyright © International Union of Geological Sciences.
Jim W. Kennedy1*, Andy S. Gale2, Brian T. Huber3, Maria R. Petrizzo4, Paul Bown5, and Hugh C. Jenkyns6
1Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK; *Corresponding author, E-mail: Jim.Kennedy@oum.ox.ac.uk
2Department of Earth and Environmental Sciences, University of Portsmouth, Portsmouth POI 3QL, UK
3Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC 121, Washington D.C. 20013-7012, USA
4Dipartimento di Scienze della Terra “Desio”, Universita degli Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy
5Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK
6Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK
Correspondence to:*E-mail: Jim.Kennedy@oum.ox.ac.uk
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Following the unanimous approval of the Executive Committee on the International Union of Geological Sciences as notified on April 8, 2016, the Global boundary Stratotype Section and Point for the base of the Albian Stage of the Cretaceous is defined at the first occurrence datum of the planktonic foraminiferan Microhedbergella renilaevis Huber and Leckie, 2011 at a level 37.4 meters above the base of the Marnes Bleues Formation and 40 cm above the base of the Niveau Kilian marker bed in the section SSE of the Col de Pré-Guittard, Arnayon, Drôme, France. The first occurrence of Microhedbergella renilaevis is placed within a 100-m section of argillaceous sediments with 28 secondary markers including calcareous nannofossils, planktonic foraminifera, an inoceramid bivalve, ammonites, stable carbon isotopes, and local marker beds.