eocene

英 /ˈi:əusi:n/ 美 /ˈiəˌsin/

中文释义

adj.始新系的，始新世的

n.始新世，始新系

Those correspond to Quaternary , Pliocene , Upper Miocene, Lower Miocene and Eocene respectively.

分别为第四系、上新统、中新统上段、中新统下段及始新统.
These showed an evolution of increasing diversity through to the Eocene.

一直到始新世,生物多样性都在不断地提高.
The funnel - shaped self - potential curve of the Eocene sands is well marked.

始新统砂层的漏斗形自然电位曲线形态很明显.