Karl von Frisch died on June 12, 1982 at the age of 95.
He died on December 10 1851
Karl Freiherr von Müffling died on January 10, 1851 at the age of 75.
Karl Ernst von Baer died on November 26, 1876 at the age of 84.
Karl Alfred von Zittel died on January 5, 1904 at the age of 64.