palaeontology
noun [ U ] science mainly UK specialized (US usually paleontology) uk/ˌpæl.i.ɒnˈtɒl.ə.dʒi/ us/ˌpeɪ.li.ɑːnˈtɑː.lə.dʒi/
古生物学
the study of fossils as a way of getting information about the history of life on earth and the structure of rocks