| 释义 |
〔nannofossil〕A very small fossil organism, especially one of the nannoplankton.微化石：一种非常小的化石生物体，尤指浮游生物之一〔conodont〕A Paleozoic microfossil usually having a toothlike shape and considered to be the remains of an extinct marine organism.牙形刺：一种古生代微化石，一般有牙状形体，被认为是一种已灭绝海生生物体的残骸 |