[ 'palɪə(ʊ)dʒi:n , 'peɪ- ]
( US Paleogene )
■ adjective Geology relating to or denoting the earlier division of the Tertiary period (comprising the Palaeocene, Eocene, and Oligocene epochs, from about 65 to 23.3 million years ago).
Origin
C19: from palaeo- + Gk genēs (see -gen ).