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:
Roemer Eurypterus Scouler Figur . Ferdinand Roemer Notiz ber das Vorkommen von Eurypterus Scouleri im Niederschlesischen Steinkohlengebirge In Zeitschrift der Deutschen geologischen Gesellschaft Band Figur hathitrust org id mdp Michigan Ferdinand Roemer PDold Ferdinand Roemer books DjVu files in German