The thesis defense of Mr. Jose Dominick S. Guballa was held on Oct. 4, 2018 at the NIGS Multipurpose Room. His thesis topic is on the Calcareous Nannofossil Biostratigraphy and Paleoceanographic Insights from the latest Pleistocene from Site U1431D, IODP Expedition 349, South China Sea. His thesis committee is composed of Dr. Alyssa M. Peleo-Alampay as adviser, Dr. Allan Gil S. Fernando as reader, and Dr. Leopoldo P. de Silva, Jr. and Dr. Leo T. Armada as examiners.