kingdom Chromista > subkingdom Harosa > infrakingdom Alveolata > phylum Myzozoa > subphylum Dinozoa > infraphylum Dinoflagellata > class Dinophyceae > subclass Peridiniphycidae > order Gonyaulacales > family Ceratiaceae > genus Ceratium > species Ceratium obtusum
| Rank | Species |
| Status | unaccepted |
| Aphia ID | urn:lsid:marinespecies.org:taxname:845247 |
| Valid name | Tripos obtusus |
| Valid Aphia ID | 841268 |
| Environments | marine |
This status of this taxon in WoRMS is unaccepted. The accepted taxon for Ceratium obtusum Gourret, 1883 is Tripos obtusus.