Oligocene

n. 渐新世, 渐新统 a. 渐新世的, 渐新统的

释义与例句

adj.
  1. 1.

    Of a geologic epoch within the Paleogene period from about 34 to 23 million years ago; marked by the rapid evolution in a warm climate.

    地质
name
  1. 1.

    The Oligocene epoch.

    地质

词源

From German Oligozän (originally spelt Oligocän, coined in 1854). By surface analysis, oligo- + -cene.

来源：wiktionary