PROTOZOA-PARAZOA 



Sub-class SPIROTRICHA 



Order THIGMOTRICHTOA 



Thigmophrya ; Conchophthirus ; Ancistrum; Boveria; 

 Ancistrocoma; Hypocomella; Hypocoma 

 Order PERITRICHIDA 

 ( = Stomatoda) 

 Vorticella; Epistylis; Zoothamnium; Trichodina; 

 Urceolaria 



Order HETEROTRICHIDA 



Sub-order Heterotrichina 



Climacostomum; Condylostoma; Spirostomum; 



Stentor 

 Sub-order Licnophorina 



Licnophora 

 Order GLIGOTRICHTOA 



Strombidium; Halteria; Strombilidiitm 

 Order TINTINNIDA 



Tintirmopsis; Tintiimus 

 Order ENTODINIOMORPHIDA 



Epidinium; Entodinium; Ophryoscolex; 



Cycloposthium 

 Order CTENOSTOMAXroA 

 ( = Odontostomatida) 



Epalxis; Saprodinium; Discomorpha 

 Order HYPOTRICHTOA 



Diophrys; Euplotes; Oxytricha; Uroleptus 



Phylum MESOZOAi 



Order DICYEMIDA 



( = Rhombozoa) 

 Dicyema; Microcyema 

 Order ORTHONECXroA 



Rhopalura 



Phylum PARAZOA ( = Porifera, Spongiida) (sponges)^ 



Class NUDA» 



Order CALCAREA 



( = Calcispongiae) 

 Sub-order Homocoela (ascon sponges) 



Leucosolenia { = Ascute) ; Clathrina 

 Sub-order Heterocoela 

 Leucilla; Scypha ( = Sycon); Leuconia 

 ( =Leiicandrd); Grantia (=Sycandra) 



* Members of this phylum are often considered to be degenerate members of phylum PlatyhelmintheSf 

 pp. 13-14. 



* Classification by Burton. 



' Sometimes considered as a phylum, in which case phylum Parazoa becomes a sub-kingdom Class Nuda 

 also occurs in phylum Ctenophora, p. 13. 



B R.C.L.A. 



