This dataset provides morphometric characteristics of Reticulofenestra during the early Pliocene from Site U1475, drilled on the southwestern flank of the Agulhas Plateau, southwestern Indian Ocean during IODP Expedition 361: South African Climate from 30 January to 31 March 2016. Samples were analysed for morphometric parameters, such as the lengths of the major and minor axes, mass, and volume of the Reticulofenestra coccolith calcite using the C-calcita software (Fuertes et al., 2014).