Fig. 2

Labels, fossil and geological samples from Iquitos collected during the Bluntschli and Peyer expedition of 1912. A Original label describing the fossiliferous layers (for translation and more details see Table 1). B, C Boxes with glass tubes containing the small fossil vertebrates and with papers of different colours indicating the different fossiliferous layers (e.g., see A). D Lignite sample collected from the lignite layer at the Telefunken station