New outcrops discovered in detrital ante-Stephanian sequences of the Southwestern Pyrenean Axial Zone
  (Béarn and Basque Country), yield abundant and varied faunas and floras.  Among these the goniatite
  faunas are of particular interest.  In a detailed palaeontological study, 9 species of Namurian age are
  recognized characterizing 3 levels of different age : the levels R1a2 (Reticuloceras circumplicatile Subzone)
  and R1a3 (Reticuloceras todmordenense Subzone) belong in the lower R1 Zone (Kinderscoutian,
  Reticuloceras inconstans Zone), Namurian B ; the third level is Upper Namurian in age (Yeadonian, lower
  Gastrioceras Zone), Namurian C. These goniatite associations are palaeogeographically linked with
  those of the rest of Europe and North Africa, but their stratigraphical succession is not continuous.