Dodatak:Popis žarnjaka, D
Da
uredi- Dactylactis
- Dactylanthus
- Dactylotrochus
- Dampia
- Daontesia mielchei Carlgren, 1956
- Daontesia porcupina Riemann-Zürneck, 1997
- Daontesia praelonga (Carlgren, 1928)
Cnidaria → Anthozoa → Actiniaria → Thenaria → Acontiaria → Bathyphellidae
- Dasmosmilia
- Dasystenella
De
uredi- Decaphellia
- Deepstaria
- Deltocyathoides
- Deltocyathus
- Dendrobathypathes
- Dendrobrachia
- Dendrobrachiidae
- Dendrogyra
- Dendronephthya
- Dendropathes
- Dendrophyllia
- Dendrophylliidae
- Denhartogia
- Dentitheca
- Dentomuricea
- Depastridae
- Depastromorpha
- Depastrum
- Desmonema
- Desmophyes
- Desmophyllum
Di
uredi- Diadumene
- Diadumenidae
- Dichocoenia
- Dicholaphis
- Dichopsammia
- Dichotella
- Dichotomia
- Dicnida
- Dicodonium
- Dicoryne
- Dictyocladium
- Dicyclocoryne
- Digitogorgia
- Dimophyes
- Dimorphophyton
- Diodogorgia
- Diphasia
- Diphyes
- Diphyidae
- Dipleurosoma
- Dipleurosomatidae
- Diploastrea
- Diplopteroides
- Diploria
- Diplulmaris
- Dipurenella
- Discogorgia
- Discomedusa
- Discophyton
- Discosoma
- Discosomatidae
- Distichogorgia
- Distichopathes
- Distichopora
- Distichoptilum
Dn
uredi†Dnestrites Bondarenko 1978
uredi- †Dnestrites expectatus Bondarenko 1978
- †Dnestrites incognitus Klaamann 1984
- †Dnestrites ludlovicus Klaamann 1984
- †Dnestrites stylifer Deng & Yang. D.-r. 1983
- †Dnestrites transitus Bondarenko 1978
Cnidaria → Anthozoa → Heliolitida → Helioliticae → Heliolitidae
Do
uredi- Dofleinia armata Wassilieff, 1908
Cnidaria → Anthozoa → Actiniaria → Nynantheae → Thenaria → Endomyaria → Actiniidae
Dr
uredi- Drifa
- Drillactis
- Dromalia
- Drymonema
Du
uredi- Duncanopsammia
- Dunocyathus
- Duva
Dy
uredi- Dynamena