A North American ammonite fauna from the late Middle Turonian of Vaucluse and Gard, southern France: the Romaniceras mexicanum, Prionocyclus hyatti and Coilopoceras cf. springeri association

Authors

  • Francis Amédro 26 rue de Nottingham, 62100 Calais, France and Université de Bourgogne, UMR 6282, CNRS Biogéosciences, 6 boulevard Gabriel, 21000 Dijon
  • Francis Robaszynski Université de Mons, Faculté Polytechnique, Département Mines-Géologie, 9 rue de Houdain, 7000 Mons, Belgique and 57, rue Desmortiers, 17100 Saintes
  • Bertrand Matrion 1 ter rue du Pont, 10450 Bréviandes, France and Université de Bourgogne, UMR 6282, CNRS Biogéosciences, 6 boulevard Gabriel, 21000 Dijon
  • Christian Devalque 30bis avenue Charles de Gaulle, 84420 Piolenc

Keywords:

Cretaceous, Turonian, Ammonites, Transgressive event, Migration, North America, Southern France

Abstract

An unusual, exotic, ammonite fauna including Romaniceras mexicanum Jones, 1938, Prionocyclus hyatti (Stanton, 1894) and Coilopoceras cf. springeri Hyatt, 1903 is recorded from the late Middle Turonian of Vaucluse and Gard, southern France. It is the first record of this ammonite association outside the Gulf Coast region and the Western Interior of the United States of North America. Up to present, these species were considered as endemic to the Western Interior sea-way. The migration of numerous ammonites from North America to western Europe during the late Middle Turonian suggests it is linked to a transgressive event or to a short sea-level high.

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Published

2016-12-23