Figure 2: B-E) The Aptian/Albian boundary (Albian GSSP arrowed) in the Trébou valley, west of the Pré Guitard pass (A), La Drôme (SE France). A: 23/05/2015; B: 26/05/2015; C, E: 25/05/2013; D: 21/05/2017.
