<Li> Torrejonian: Lower boundary 63.3 Ma . Upper boundary 60.2 Ma . </Li> <Li> Puercan: Lower boundary 66 Ma . Upper boundary 63.3 Ma . </Li> <Ul> <Li> Lancian: Lower boundary 70 Ma . Upper boundary 66 Ma . </Li> <Li> Judithian: Lower boundary 84 Ma . Upper boundary 70 Ma . </Li> <Li> Aquilian: Lower boundary 86 Ma . Upper boundary 84 Ma . </Li> </Ul> <Li> Lancian: Lower boundary 70 Ma . Upper boundary 66 Ma . </Li>

What land mammal holds the record for the greatest age