a. (Zool.) Of or pertaining to the
a. [ Oligo- + Gr. &unr_; new, recent. ] (Geol.) Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. --
a. [ Oligo- + Gr. &unr_; new, recent. ] (Geol.) Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. --