Oligocene=اوليغوسيني

Oligocene=اوليغوسيني

ONLINE ETYMOLOGY DICTIONARY

Oligocene (adj.)

1856, "pertaining to the Tertiary period between the Eocene and the Miocene," coined in German (1854) by Heinrich Ernst von Beyrich, from oligo- "small, little, few" + -cene. So called because few modern fossils were found in Oligocene rocks.

oligo-

before vowels olig-, word-forming element meaning "few, the few," from comb. form of Gk. oligos "few, scanty, small, little," in plural, "the few;" of uncertain origin.

-cene

word-forming element in geology, introduced by Sir Charles Lyell (1797-1875), from Greek kainos "new," cognate with Latin recens (see recent).