Species:
Ptilocrinus (Chambersaecrinus) brucei >
Subgenus:
Ptilocrinus (Chambersaecrinus) >
Genus:
Ptilocrinus >
Family:
Hyocrinidae >
Order:
Hyocrinida >
Subclass:
Articulata >
Class:
Crinoidea >
Subphylum:
Crinozoa >
Phylum:
Echinodermata >
Kingdom:
Animalia >
Unranked:
Biota >