adjective see: -gen Date: 1882 of, relating to, or being the earlier part of the Tertiary including the Paleocene, Eocene, and Oligocene or the corresponding series of rocks, ~ noun
PALEOGENE
Meaning of PALEOGENE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012