A. Partial map of Europe indicating Burdigalian (MN3–MN4) localities with well-represented amphibian and reptilian faunas including the Echzell locality. The colour of the circles indicating the localities corresponds to the vertical balks in (B); B. Temporal and biochronologic assignments of the fossil localities, the vertical balks in different colour correspond to MN (sub)zones (e.g. the localities Echzell and Mokrá-W Quarry belong to the MN4 zone where the former is located biochronologically older than the latter withing the same MN4 zone).