Meaning of post-Tertiary in English:

post-Tertiary

Pronunciation /ˌpəʊs(t)ˈtəːʃ(ə)ri/

adjective

Geology Geography
  • Of, relating to, or designating the post-Tertiary; formed or occurring subsequent to the Tertiary period. Compare post-Pliocene , "quaternary".

Origin

Mid 19th century (in an earlier sense). From post- + tertiary.