Jean Albert Gaudry (16 September 1827 – 27 November 1908) was a French geologist and palaeontologist. He was born at St Germain-en-Laye, and was educated at the Catholic Collège Stanislas de Paris. He was a notable proponent of theistic evolution.
Hatten Schuyler Yoder, Jr., (March 20, 1921 – August 2, 2003) was a geophysicist and experimental petrologist who conducted pioneering work on minerals under high pressure and temperature. He was noted for his study of silicates and igneous rocks.
Karl Alfred Ritter von Zittel (25 September 1839 – 5 January 1904) was a German palaeontologist best known for his Handbuch der Palaeontologie (1876–1880).
Gerald J. Wasserburg (March 25, 1927 – June 13, 2016) was an American geologist. At the time of his death, he was the John D. MacArthur Professor of Geology and Geophysics, emeritus, at the California Institute of Technology. He was known for his work in the fields of isotope geochemistry, cosmochemistry, meteoritics, and astrophysics.