This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Das Rheinische Uebergangsgebirge Plate IV BHL. Das Rheinische Uebergangsgebirge eine palaeontologischgeognostische Darstellung von Carl Ferdinand Roemer Dr phil mit sechs lithographirten tafeln Plate IV Illustration biodiversitylibrary org title Roemer Ferdinand Biodiversity Heritage Library Check categories October PDold