Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Operculina  | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Rotaliacea | |
| .....Nummulitidae | |
| ......Nummulites | |
| .......Operculina | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |