kingdom Chromista > subkingdom Harosa > infrakingdom Rhizaria > phylum Foraminifera > class Nodosariata > subclass Nodosariana > order Vaginulinida > family Vaginulinidae > subfamily Marginulininae > genus Marginulina > species Marginulina sigma
| Rank | Species |
| Status | unaccepted |
| Aphia ID | urn:lsid:marinespecies.org:taxname:919854 |
| Valid name | Marginulinopsis incurva |
| Valid Aphia ID | 1449082 |
| Environments |
marine, |
This status of this taxon in WoRMS is unaccepted. The accepted taxon for Marginulina sigma Terquem, 1866 is Marginulinopsis incurva.