Dodatak:Popis žarnjaka, G
Ga uredi
- Galatheanthemidae
- Galatheanthemum
- Galaxea
- Gangliostoma
- Gardineria
- Gardineriidae
- Gardineroseris
- Garveia
- Gastroblasta
- Gattya
Ge uredi
- Geminella
- Geomackiea
- Gerardia
- Gerongia
- Gersemia
- Geryonia
- Geryoniidae
Gi uredi
†Porodica Gigantostyliidae Frech 1890 uredi
- †Gigantostylis Frech 1890 [1]
Cnidaria → Anthozoa → Scleractinia → Stylophyllina
†Gigantostylis Frech 1890 uredi
- †Gigantostylis epigonus Frech 1890 Fossilworks Gigantostylis
Cnidaria → Anthozoa → Scleractinia → Stylophyllina → Gigantostyliidae
Gigantotheca Vervoort & Watson, 2003 uredi
- Gigantotheca maxima Vervoort & Watson, 2003 [2]
- Gigantotheca raukumarai Vervoort & Watson, 2003 [2]
Cnidaria → Hydrozoa → Hydroidolina → Leptothecata → Sertulariidae
- Gilia
- Gilibelemnon
Gl uredi
- Glyphoperidium
- Glyphostylum
Go uredi
- Gonactinia
- Gonactiniidae
- Gonaxia
- Goniastrea
- Goniocorella
- Gonionemus
- Goniopora
- Gonothyraea
- Gorgonia
- Gorgoniidae
- Gorgonisis
- Gossea
Gr uredi
- Grammaria
Gu uredi
- Guaiagorgia
- Guillea
- Guynia
- Guyniidae
Gy uredi
- Gymnangium
- Gymnogonos
- Gymnopraia
- Gyractis
- Gyrophyllum
- Gyropora
- Gyrosmilia
Izvori uredi
- ↑ Fossilworks Gigantostyliidae
- ↑ a b [1] WoRMS Gigantotheca Vervoort & Watson, 2003