hydroidolinan means any cnidarian of the subclass Hydroidolina.
Etymology
Hydroidolina + -an
noun
- Any cnidarian of the subclass Hydroidolina“It should be noted however that representatives of other colonial hydroidolinan lineages including Capitata and other Filifera were not included in this analysis, so the precise origin of coloniality within Hydrozoa awaits further sampling.”