96 genera are assigned to the class HOLOTHUROIDEA

OrderGenusFOPFOSLOPLOS
APODIDAAcanthotheeliaTrAnis-mTrRhae
APODIDAAchistrumCVise-uTPale
APODIDAAduncrumTr?J?
APODIDAAuricularitesJOxfoJOxfo
APODIDACalcancoraTrRhaeR 
APODIDACalcancoroideaTOl-uTOl-u
APODIDACroneisitesTEoTMi-u-l
APODIDAHemisphaeranthosJPlieKSn
APODIDAKozurellaTrNori-lTrNori-u
APODIDAMicraditesJOxfoJOxfo
APODIDAPaleochiridotaCTour-lCStep-u
APODIDAPorachistrumDGiveDGive
APODIDAProtheeliaPDjhuPDjhu
APODIDARigauditesKlTOl
APODIDARotaCTour-lPGuad
APODIDASpandelitesJOxfoJOxfo
APODIDAStueriaTrCarn-uR 
APODIDASynaptitesJOxfoR 
APODIDAThallatocanthusCMosc-uPGuad
APODIDATheeliaCBashR 
ARTHROCHIROTIDAEtheridgellaCStep-uCStep-u
ARTHROCHIROTIDAFrizzellusTr?JOxfo
ARTHROCHIROTIDAPalaeocucumariaDEmsi-lDEmsi-l
ASPIDOCHIROTIDABathysynactitesTrLadiTrLadi
ASPIDOCHIROTIDACalclamnellaPGuadR 
ASPIDOCHIROTIDACollbatothuriaTrLadi-lTrLadi-l
ASPIDOCHIROTIDACucumaritesJSineR 
ASPIDOCHIROTIDAHolothuropsisJBajo-uJBajo-u
ASPIDOCHIROTIDAOrnaticannulaJOxfoR 
ASPIDOCHIROTIDAParvispinaCMsTMi
ASPIDOCHIROTIDAPriscopedatusCuR 
ASPIDOCHIROTIDAProholothuriaJKimm-uJKimm-u
ASPIDOCHIROTIDARamusitesJuKAlbi
ASPIDOCHIROTIDARhabdotitesTrLadi-uJOxfo
ASPIDOCHIROTIDAStichopitesTrLadi-uR 
ASPIDOCHIROTIDAUncinulinaCSerp-lR 
DACTYLOCHIROTIDAPalaeoypsilusJHett-uJSine-l
DENDROCHIROTIDAAcutisclerusJHett-uJPlie
DENDROCHIROTIDAAmphitrioditesJOxfoJOxfo
DENDROCHIROTIDAAndenothyoneDlDl
DENDROCHIROTIDABinoculitesTrAnisR 
DENDROCHIROTIDACalclamnaTrAnis-lTMi-u-l
DENDROCHIROTIDACalclamnoideaTrLadi-uR 
DENDROCHIROTIDAClavallusCTour-lTrAnis
DENDROCHIROTIDACostigeritesJ?TEo
DENDROCHIROTIDADictyothuritesTOl-lR 
DENDROCHIROTIDAElgeriusTOl-lTOl-l
DENDROCHIROTIDAEocaudinaCTour-lR 
DENDROCHIROTIDAFissobractitesTrAnisTrRhae
DENDROCHIROTIDAHelfriedellaJBathJOxfo
DENDROCHIROTIDAHuniellaJBathJOxfo
DENDROCHIROTIDAKuehnitesTrAnisTrNori-u
DENDROCHIROTIDAMonilipsolusTrLadi-lTrLadi-l
DENDROCHIROTIDAMortensenitesCuTMi
DENDROCHIROTIDAPachopsitesTMiTMi
DENDROCHIROTIDAParacucumaritesJBath-lKAlbi
DENDROCHIROTIDAParvioctoidusJOxfoJOxfo
DENDROCHIROTIDAPetropegiaCMosc-lCMosc-l
DENDROCHIROTIDAPriscoligulaKAlbiKAlbi
DENDROCHIROTIDAPriscolongatusTrmTOl-l
DENDROCHIROTIDAPriscopedatoidesTrAnis-mTrAnis-m
DENDROCHIROTIDAPriscularitesJOxfoR 
DENDROCHIROTIDAPseudostaurocumitesTrNori-mTrNori-m
DENDROCHIROTIDAPunctatitesPTatrJHett-u
DENDROCHIROTIDASchlumbergitesTrRhaeJOxfo
DENDROCHIROTIDASolopedatusTrNori-uTrNori-u
DENDROCHIROTIDASpinopriscopedatusJBajoKAlbi
DENDROCHIROTIDAStichopitellaTrNori-lTrNori-u
DENDROCHIROTIDAStrobilothyoneTrLadi-lTrLadi-l
DENDROCHIROTIDAUncinuloidesTrNori-mTrNori-u
ELASIPODIDAMercedescaudinaTr?Tr?
ELASIPODIDAMicroantyxCTourPGuad
ELASIPODIDAOneirophanitesTrLadiTrLadi
ELASIPODIDAPalelpidiaTrNori-lTrNori-u
ELASIPODIDAPraecaudinaTrNori-lTrNori-u
ELASIPODIDAPraeeuphronidesTrAnis-uJPlie
ELASIPODIDAProtocaudinaDEifeJOxfo
ELASIPODIDATetravirgaCVise-uTrNori-u
MOLPADIIDACalcancorellaTOl-lR 
MOLPADIIDACalcligulaJlR 
MOLPADIIDAExlinellaJOxfoR 
MOLPADIIDAJordanocaudinaJBathJBath
MOLPADIIDAPedatopriscusJOxfoR 
MOLPADIIDAPseudoexlinellaJBath-uJBath-u
MOLPADIIDAStaurocumitesTrAnis-uJOxfo-l
uncertainAcanthocaudinaTrNori-uTrNori-u
uncertainAlexandritesTMi-mTMi-m
uncertainCalclyraCPnPDjhu
uncertainConisiaTrCarn-uTrNori-u
uncertainCosmatitesTrmTrm
uncertainCrucivirgaTrNori-lTrNori-l
uncertainCurvatellaTrNori-uTrNori-u
uncertainSclerothupitesJOxfoJOxfo
uncertainSemperitesTrNori-lTrNori-u
uncertainTriraditesTrNori-lTrNori-u
uncertainUniramosaTrNori-mKAlbi

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FOP = Period of first occurrence
FOS = Stage of first occurrence
LOP = Period of last occurrence
LOS = Stage of last occurrence

Stage abbreviations follow Sepkoski (2002).