German paleobotanist and palynologist.
Karl A. Mädler (born 9 December 1902 – 22 October 2003) was a German paleobotanist and palynologist. Mädler was initially a pharmacist in Seifhennersdorf for a few years and studied the Oligocene fossil flora in the nearby region. From 1931 he studied paleobotany of Tertiary floras with Richard Kräusel and was a research assistant at the Naturmuseum Senckenberg in Frankfurt. Due to unfortunate circumstances, Mädler's planned doctoral thesis initially failed to materialize, but in 1939 he published a noteworthy article on Pliocene fossil flora (known as the "Klärbecken-Flora") found during the