Dodatak:Popis žarnjaka, I
Ic uredi
- Iciligorgia
Id uredi
- Ideogorgia
- Idiellana
- Idiotrochus
If uredi
Ifalukella Bayer, 1955 uredi
- Ifalukella yanii Bayer, 1955
Cnidaria → Anthozoa → Alcyonacea → Calcaxonia → Ifalukellidae
Porodica Ifalukellidae Bayer, 1955 uredi
- Ifalukella Bayer, 1955
- Plumigorgia Nutting, 1910
Cnidaria → Anthozoa → Octocorallia → Alcyonacea → Calcaxonia
In uredi
†Inaria Gehling 1988 uredi
†Inaria karli Gehling 1988 Animalia → Cnidaria → Anthozoa
-
Inaria karli
- Inconstantia
- Incrustatus
- Indophyllia
- Inferiolabiata
- Inflatocalyx
- Ingotia
Io uredi
- Iosactiidae
- Iosactis
- Iotisis
Ir uredi
- Irenium
- Iridogorgia
Is uredi
- Isactinernus
- Isactinia
- Isantheopsis
- Isanthidae
- Isanthus
- Isapiactis
- Isarachnactis
- Isarachnanthus
Isaurus Gray, 1828 uredi
- Isaurus cliftoni Gray, 1867
- Isaurus maculatus Muirhead & Ryland, 1985
- Isaurus tuberculatus Gray, 1828
Cnidaria → Anthozoa → Zoantharia → Brachycnemina → Zoanthidae
- Isidella
- Isididae
- Isidoides
- Isis
- Isoaulactinia
- Isocradactis
- Isodactylactis
- Isoedwardsia
- Isophellia
- Isophelliidae
- Isophyllia
- Isosicyonis
- Isotealia
- Isovactis
- Isozoanthus
Ix uredi
- Ixion