FIG. 7. — Joania peyrerensis n in Upper Oligocene (Chattian) brachiopod fauna from the Aquitaine Basin, southwestern France and its paleoenvironmental implications

FIG. 7. — Joania peyrerensis n. sp., Upper Oligocene: A-C, ventral and dorsal views of complete specimen, and enlargement of posterior part to show details of the beak, holotype MNHN.F.A46532, Peyrère; D, E, inner and oblique lateral views of dorsal valve, paratype MNHN.F.A46533, Bélus; F-I, inner view of ventral valve, enlargement of posterior part (G) and details of left tooth (H) and enlargement of anterior part (I) to show radial ridges terminating anteriorly in tubercules, paratype MNHN.F.A46534, Bélus. All SEM. Scale bars: A, B, D-F, 1 mm; C, G, I, 500 µm; H, 100 µm.