1906 – Born on the 12th of May in Lockney, Texas, U.S.A.
1926 – He earned Bachelor of Arts in Rice University, Houston, Texas, U.S.A.
1927 – He completed his graduate studies earning a Master of Arts in Rice University.
1928 – He married to Avarilla Hildenbrand.
1931 – He awarded his Doctor of Philosophy.
1947 – He became a professor of Geology in Columbia University, U.S.A.
1959 – He was named the Higgins Professor of Geology at Columbia.
1965 – He married for the second time, this time to Harriet Greene Bassett.
1972 – He joined the University of Texas Medical Branch.
1974 – He died on the 4th of May.