(Pliobothrus) (Pliobothrus) is a biological genus in the family Stylasteridae (Hydrocorals) and order Anthoathecatae (Athecate Hydroids).
Pliobothrus echinatus
Pliobothrus fistulosus
Pliobothrus gracilis
Pliobothrus spinosus
Pliobothrus symmetricus
Pliobothrus tubulatus
Adelopora
Astya
Calyptopora
Cheiloporidion
Conopora
Crypthelia
Cyclohelia
Distichopora
Errina
Errinopora
Errinopsis
Gyropora
Inferiolabiata
Lepidopora
Lepidotheca
Paraerrina
Phalangopora
Pliobothrus
Pseudocrypthelia
Sporadopora
Stellapora
Stenohelia
Stephanohelia
Stylantheca
Stylaster
Systemapora