1. Biostratigraphic analyses based on planktonic foraminifera. 2. Phylogenetic analysis. 3. Anatomical plate of the molar ULDG-DAG1. 4. Enamel microstructure of Dagbatitherium. 5. Enamel microstructure of Palaeomastodon. 6. Characterization of the distal cingulum of ULDG-DAG1.