| 释义 |
sac·cam·mi·na
\səˈkamənə, saˈk-\ noun
Usage: capitalized
Etymology: New Latin
: a genus of foraminiferans having a thick arenaceous test often in the shape of a pear, spindle, or sphere, having survived from the Ordovician to the present time, and making up with their remains various Carboniferous strata |