kingdom Chromista > subkingdom Harosa > infrakingdom Alveolata > phylum Myzozoa > subphylum Dinozoa > infraphylum Dinoflagellata > class Dinophyceae > subclass Peridiniphycidae > order Peridiniales > family Peridiniaceae > genus Peridinium > species Peridinium steinii
| Rank | Species |
| Status | unaccepted |
| Aphia ID | urn:lsid:marinespecies.org:taxname:663635 |
| Valid name | Protoperidinium steinii |
| Valid Aphia ID | 110257 |
| Environments | marine |
This status of this taxon in WoRMS is unaccepted. The accepted taxon for Peridinium steinii Jørgensen, 1889 is Protoperidinium steinii.