288 genera are assigned to the phylum HEMICHORDATA

OrderGenusFOPFOSLOPLOS
CAMAROIDEABithecocamaraOTremOTrem
CAMAROIDEACysticamaraOTrem-lOTrem-l
CAMAROIDEAFlexicollicamaraOTremOTrem
CAMAROIDEAGraptocamaraOTremOAren
CAMAROIDEASyringotaeniaOTremOTrem
CAMAROIDEATubicamaraOTremOTrem
CEPHALODISCIDACephalodiscusTEo-mR 
CEPHALODISCIDAEocephalodiscusOTrem-uOTrem-u
CEPHALODISCIDAPterobranchitesOLldeOLlde
CRUSTOIDEABulamicrustaOLlde-lSWenl-u
CRUSTOIDEAEllesicrustaOLlde-lOLlde-l
CRUSTOIDEAHolmicrustaOLlde-lOLlde-l
CRUSTOIDEAHormograptusOLlde-uOLlde-u
CRUSTOIDEAincertae sedisSLudlSLudl
CRUSTOIDEALapworthicrustaOLlviOLlvi
CRUSTOIDEAReudemannicrustaOLlde-lOLlde-l
CRUSTOIDEAUrbanekicrustaSWenl-uSWenl-u
CRUSTOIDEAWimanicrustaOLlde-lOLlde-l
CRUSTOIDEAXenocyathusOCara-mSWenl
DENDROIDEAAcanthograptusCmTrepSLudl
DENDROIDEAAdelograptusOTrem-lOAren-l
DENDROIDEAAletograptusOTrem-uOTrem-u
DENDROIDEAAnisograptusOTrem-lOTrem-l
DENDROIDEAAorograptusOTrem-uOTrem-u
DENDROIDEAAraneograptusOTrem-uOAren-l
DENDROIDEAAretograptusOTrem-lOTrem-l
DENDROIDEAAspidograptusCmDres-uSLudl-u
DENDROIDEABryograptusOTrem-lOTrem-u
DENDROIDEACallograptusCmDres-lCSerp-l
DENDROIDEACalyxdendrumOLlde-uOLlde-u
DENDROIDEAChoristograptusOTrem-uOTrem-u
DENDROIDEAClonograptusOTrem-lOAren-l
DENDROIDEACoremagraptusOArenSLudl
DENDROIDEACymatograptusOAren-lOAren-l
DENDROIDEADendrograptusCmDres-lCVise
DENDROIDEADesmograptusCmDres-uCSerp-l
DENDROIDEADictyonemaCmDres-uCSerp-l
DENDROIDEAGraptolodendrumOLlde-lOLlde-l
DENDROIDEAHunnegraptusOTrem-uOTrem-u
DENDROIDEAincertae sedisCmuMid-mCmuMid-m
DENDROIDEAKiaerograptusOTrem-uOTrem-u
DENDROIDEAKoremagraptusOlDSieg
DENDROIDEALicnograptusOlOl
DENDROIDEAOphigraptusDEmsi-uDEife-l
DENDROIDEAPalaeodictyotaCmDres-uDGedi
DENDROIDEAParadelograptusOTrem-uOTrem-u
DENDROIDEAParatemnograptusOTrem-uOTrem-u
DENDROIDEAPolygonograptusCmDres-uSLudl
DENDROIDEAPsigraptusOTrem-uOTrem-u
DENDROIDEAPtilograptusOAren-uSPrid
DENDROIDEAPtiograptusS?CVise
DENDROIDEARadiograptusOTrem-lOTrem-l
DENDROIDEARhabdinoporaOTrem-lOTrem-u
DENDROIDEARhipidodendrumOTremOTrem
DENDROIDEASagenograptusOlOl
DENDROIDEAStaurograptusOTrem-lOTrem-l
DENDROIDEAThallograptusCmDres-uSLudl
DENDROIDEATriograptusOTrem-uOTrem-u
GRAPTOLOIDEAAbiesgraptusDGedi-lDGedi-u
GRAPTOLOIDEAAbrograptusOLlde-lOLlde-u
GRAPTOLOIDEAAcrograptusOAren-uOLlvi-l
GRAPTOLOIDEAAgastograptusSWenl-uSLudl-l
GRAPTOLOIDEAAgetograptusSLdov-mSLdov-m
GRAPTOLOIDEAAkidograptusOAshg-mSLdov-l
GRAPTOLOIDEAAllograptusOAren-uOAren-u
GRAPTOLOIDEAAmphigraptusOLlde-uOCara-u
GRAPTOLOIDEAAmplexograptusOLlde-lOAshg-u
GRAPTOLOIDEAAnomalograptusOlOl
GRAPTOLOIDEAAnthograptusOAren-lOAren-l
GRAPTOLOIDEAApiograptusOAren-uOAren-u
GRAPTOLOIDEAArachniograptusOAshg-mOAshg-m
GRAPTOLOIDEAArchiclimacograptusOAren-uOCara-m
GRAPTOLOIDEAArchiretiolitesOCara-uOCara-u
GRAPTOLOIDEAArienigraptusOAren-uOLlvi-u
GRAPTOLOIDEAArnheimograptusOCara-uOAshg-m
GRAPTOLOIDEAAtavograptusOAshgSLdov-m
GRAPTOLOIDEAAtopograptusOLlviOLlvi
GRAPTOLOIDEAAulograptusOLlvi-lOLlvi-l
GRAPTOLOIDEAAverianowograptusSWenl-lSWenl-l
GRAPTOLOIDEAAzygograptusOAren-lOLlde-u
GRAPTOLOIDEABarrandeograptusSLdov-mSWenl-l
GRAPTOLOIDEABergstroemograptusOLlvi-lOLlvi-u
GRAPTOLOIDEABohemograptusSLudl-lSLudl-u
GRAPTOLOIDEABrachiograptusOLlviOLlvi
GRAPTOLOIDEACalamograptusOlOl
GRAPTOLOIDEACardiograptusOAren-uOLlvi-l
GRAPTOLOIDEACephalograptusSLdov-mSLdov-m
GRAPTOLOIDEAClimacograptusOAren-uOAshg-u
GRAPTOLOIDEAClinoclimacograptusSLdov-lSLdov-m
GRAPTOLOIDEAColonograptusSLudl-lSLudl-l
GRAPTOLOIDEAComograptusSLdov-lSLdov-m
GRAPTOLOIDEACoronograptusSLdov-lSLdov-m
GRAPTOLOIDEACorynitesOCara-lOCara-m
GRAPTOLOIDEACorynoidesOCara-lOCara-u
GRAPTOLOIDEACrinitograptusSLudl-lSLudl-l
GRAPTOLOIDEACryptograptusOAren-uOCara-u
GRAPTOLOIDEACucullograptusSLudl-lSLudl-l
GRAPTOLOIDEACyrtograptusSLdov-uSWenl-u
GRAPTOLOIDEACystograptusSLdov-lSLdov-l
GRAPTOLOIDEADemirastritesSLdov-mSLdov-u
GRAPTOLOIDEADicaulograptusOLlvi-uOLlvi-u
GRAPTOLOIDEADicellograptusOLlvi-lOAshg-u
GRAPTOLOIDEADiceratograptusOAshg-uOAshg-u
GRAPTOLOIDEADichograptusOAren-lOLlvi
GRAPTOLOIDEADicranograptusOLlde-uOCara-u
GRAPTOLOIDEADidymograptellusOAren-lOAren-l
GRAPTOLOIDEADidymograptusOTrem-uOLlde-u
GRAPTOLOIDEADimorphograptoidesSLdov-lSLdov-l
GRAPTOLOIDEADimorphograptusSLdov-lSLdov-l
GRAPTOLOIDEADinemagraptusOAren-uOLlde-u
GRAPTOLOIDEADiplacanthograptusOCara-mOAshg-m
GRAPTOLOIDEADiplograptusOLlvi-uOAshg-u
GRAPTOLOIDEADiversograptusSLdov-mSLdov-u
GRAPTOLOIDEAEisenackograptusSWenl-lSWenl-u
GRAPTOLOIDEAEoglyptograptusOAren-uOCara-l
GRAPTOLOIDEAEuclimacograptusOAshg-mOAshg-m
GRAPTOLOIDEAExigraptusOAren-uOAren-u
GRAPTOLOIDEAGeitonograptusOLlde-uOLlde-u
GRAPTOLOIDEAGeniculograptusOCara-lOAshg-m
GRAPTOLOIDEAGlossograptusOAren-uOCara-l
GRAPTOLOIDEAGlyptograptusSLdov-lSLdov-u
GRAPTOLOIDEAGoniograptusOAren-lOLlvi-l
GRAPTOLOIDEAGothograptusSLudl-lSLudl-l
GRAPTOLOIDEAGymnograptusOLlde-lOLlde-l
GRAPTOLOIDEAHallograptusOAren-uOCara-l
GRAPTOLOIDEAHirsutograptusSLdov-lSLdov-l
GRAPTOLOIDEAHolmograptusOAren-uOLlvi-l
GRAPTOLOIDEAHolograptusOArenOAren
GRAPTOLOIDEAHoloretiolitesSLudl-lSLudl-u
GRAPTOLOIDEAHustedograptusOLlviOCara-l
GRAPTOLOIDEAIsograptusOAren-uOLlvi-u
GRAPTOLOIDEAJanograptusOLlvi-uOLlde
GRAPTOLOIDEAJoamgsjamotesOLlde-uOLlde-u
GRAPTOLOIDEAKalpinograptusOLlde-lOCara-l
GRAPTOLOIDEAKinnegraptusOAren-uOAren-u
GRAPTOLOIDEALagarograptusSLdov-lSLdov-m
GRAPTOLOIDEALasiograptusOCara-lOCara-m
GRAPTOLOIDEALaxograptusOAren-lOAren-l
GRAPTOLOIDEALeptograptusOLlde-uOAshg-m
GRAPTOLOIDEALimpidograptusSLdov-lSLdov-l
GRAPTOLOIDEALinograptusSLudl-lDGedi-u
GRAPTOLOIDEALobograptusSLudl-lSLudl-l
GRAPTOLOIDEALoganograptusOAren-lOLlvi
GRAPTOLOIDEALonchograptusOLlvi-uOLlvi-u
GRAPTOLOIDEAMaeandrograptusOAren-uOAren-u
GRAPTOLOIDEAMetabrograptusOLlde-uOCara-l
GRAPTOLOIDEAMetaclimacograptusSLdov-lSLdov-u
GRAPTOLOIDEAMimograptusOlOl
GRAPTOLOIDEAMonoclimacisSLdov-mSLudl-l
GRAPTOLOIDEAMonograptusSLdov-mSLudl-l
GRAPTOLOIDEANanograptusOLlde-uOLlde-u
GRAPTOLOIDEANemagraptusOLlde-lOCara-l
GRAPTOLOIDEANeocolonograptusSLudl-uSPrid
GRAPTOLOIDEANeocucullograptusSLudl-uSLudl-u
GRAPTOLOIDEANeodicellograptusSLdov-lSLdov-m
GRAPTOLOIDEANeodiplograptusSLdov-lSLdov-l
GRAPTOLOIDEANeodiversograptusSLudl-lSLudl-l
GRAPTOLOIDEANeogothograptusSLudl-lSLudl-l
GRAPTOLOIDEANeolobograptusSLudl-uSLudl-u
GRAPTOLOIDEANeurograptusOCara-mOAshg-m
GRAPTOLOIDEANicholsonograptusOLlvi-lOLlvi-l
GRAPTOLOIDEANormalograptusOAshg-lSLdov-u
GRAPTOLOIDEANymphograptusOAshg-lOAshg-m
GRAPTOLOIDEAOelandograptusOAren-uOLlvi-l
GRAPTOLOIDEAOncograptusOAren-uOAren-u
GRAPTOLOIDEAOrthograptusOLlde-uOAshg-m
GRAPTOLOIDEAOrthoretiolitesOCara-uOAshg-l
GRAPTOLOIDEAOslograptusOAren-uOAren-u
GRAPTOLOIDEAParaclimacograptusSLdov-lSLdov-m
GRAPTOLOIDEAParaglossograptusOAren-uOLlvi-l
GRAPTOLOIDEAParakidograptusSLdov-lSLdov-l
GRAPTOLOIDEAParaorthograptusOAshg-mOAshg-m
GRAPTOLOIDEAParapetalolithisSLdov-mSLdov-u
GRAPTOLOIDEAParaplectograptusSWenl-lSWenl-u
GRAPTOLOIDEAParaplegmatograptusOAshg-lOAshg-m
GRAPTOLOIDEAPararetiograptusOAshg-mOAshg-m
GRAPTOLOIDEAParazygograptusOlOl
GRAPTOLOIDEAPeiragraptusOAshg-mOAshg-m
GRAPTOLOIDEAPendeograptusOAren-lOAren-l
GRAPTOLOIDEAPetalograptusSLdov-lSLdov-u
GRAPTOLOIDEAPetalolithusSLdov-mSLdov-u
GRAPTOLOIDEAPhormograptusOCara-uOAshg-m
GRAPTOLOIDEAPhyllograptusOAren-lOAren-u
GRAPTOLOIDEAPipiograptusOCara-uOCara-u
GRAPTOLOIDEAPlectodinemagraptusSLudl-uSLudl-u
GRAPTOLOIDEAPlectograptusSLudl-lSLudl-l
GRAPTOLOIDEAPlegmatograptusOAshg-lOAshg-m
GRAPTOLOIDEAPleurograptusOCara-uOAshg-m
GRAPTOLOIDEAPribylograptusSLdov-lSLdov-m
GRAPTOLOIDEAPristiograptusSLdov-mSPrid
GRAPTOLOIDEAProlasiograptusOLlvi-uOLlde-l
GRAPTOLOIDEAPseudamplexograptusOLlvi-uOCara
GRAPTOLOIDEAPseudazygograptusOLlde-uOLlde-u
GRAPTOLOIDEAPseudisograptusOAren-uOAren-u
GRAPTOLOIDEAPseudobryograptusOAren-lOLlvi-l
GRAPTOLOIDEAPseudoclimacograptusOLlviOAshg-m
GRAPTOLOIDEAPseudodichograptusOAren-uOAren-u
GRAPTOLOIDEAPseudoglytograptusSLdov-lSLdov-m
GRAPTOLOIDEAPseudoisograptusOAren-lOLlvi-l
GRAPTOLOIDEAPseudomonoclimacisSLudl-uSLudl-u
GRAPTOLOIDEAPseudoplectograptusSWenl-uSWenl-u
GRAPTOLOIDEAPseudoplegmatograptusSLdov-uSLdov-u
GRAPTOLOIDEAPseudoretiolitesOAshgSLdov-m
GRAPTOLOIDEAPseudorthograptusSLdov-lSLdov-u
GRAPTOLOIDEAPseudotrigonograptusOAren-uOAren-u
GRAPTOLOIDEAPterograptusOAren-uOLlde-u
GRAPTOLOIDEARastritesSLdov-mSLdov-u
GRAPTOLOIDEAReteograptusOLlde-lOCara-l
GRAPTOLOIDEARetiolitesSLdov-uSLudl-l
GRAPTOLOIDEARhaphidograptusSLdov-lSLdov-m
GRAPTOLOIDEARivagraptusSLdov-lSLdov-m
GRAPTOLOIDEASaetograptusSLudl-lSPrid
GRAPTOLOIDEASchizograptusOAren-lOAren-u
GRAPTOLOIDEASemiplectograptusSLudl-lSLudl-l
GRAPTOLOIDEASigmagraptusOAren-lOAren-l
GRAPTOLOIDEASinodiversograptusSLdov-mSLdov-u
GRAPTOLOIDEASinograptusOLlvi-lOLlvi-l
GRAPTOLOIDEASinoreteograptusOAshg-lOAshg-l
GRAPTOLOIDEASinostomatograptusSLdov-uSWenl-l
GRAPTOLOIDEASkiagraptusOAren-uOAren-u
GRAPTOLOIDEASokolovograptusSWenl-lSWenl-u
GRAPTOLOIDEASpinograptusSLudl-lSLudl-l
GRAPTOLOIDEAStellatograptusOAren-uOAren-u
GRAPTOLOIDEAStreptograptusSLdov-uSLdov-u
GRAPTOLOIDEAStromatograptusSLdov-uSWenl-u
GRAPTOLOIDEASudburigraptusSLdov-lSLdov-m
GRAPTOLOIDEASyndyograptusOLldeOLlde
GRAPTOLOIDEATangyagraptusOAshg-mOAshg-m
GRAPTOLOIDEATemnograptusOAren-lOAren-l
GRAPTOLOIDEATetragraptusOAren-lOLlvi-l
GRAPTOLOIDEAThamnograptusOAren-lOLlde-u
GRAPTOLOIDEATriaenograptusOAren-lOAren-u
GRAPTOLOIDEATrichograptusOAren-lOLlvi
GRAPTOLOIDEATrochograptusOAren-uOAren-u
GRAPTOLOIDEATylograptusOAren-uOLlvi-l
GRAPTOLOIDEAUncinatograptusSLudl-uSLudl-u
GRAPTOLOIDEAUndulograptusOAren-uOLlvi-l
GRAPTOLOIDEAUralograptusSWenl-lSWenl-l
GRAPTOLOIDEAUrbanekograptusOLlde-uOLlde-u
GRAPTOLOIDEAXiphograptusOAren-lOAren-u
GRAPTOLOIDEAYangzigraptusOAshg-mOAshg-u
GRAPTOLOIDEAYinograptusOAshg-lOAshg-m
GRAPTOLOIDEAYushanograptusOAren-uOAren-u
GRAPTOLOIDEAYutagraptusOAren-uOAren-u
GRAPTOLOIDEAZygograptusOArenOLlvi
RHABDOPLEURIDACylindrothecaS?S?
RHABDOPLEURIDAGraptovermisOTrem-uOLlvi-l
RHABDOPLEURIDAKystodendronOArenSu
RHABDOPLEURIDARhabdopleuritesOmOm
RHABDOPLEURIDARhabdopleuroidesOLlviOAshg
RHABDOPLEURIDARhabdotubusCmmMid-uCmuMid-m
RHABDOPLEURIDARhapdopleuraCmuMidR 
STOLONOIDEAMelanostrophusOlOu
STOLONOIDEAStolonodendrumOTrem-uOTrem-u
TUBOIDEACalycotubusOTremOTrem
TUBOIDEAConitubusOTremOTrem
TUBOIDEACyclograptusSWenl-uSWenl-u
TUBOIDEADiscograptusOAshgOAshg
TUBOIDEAEpigraptusOTrem-lSLudl
TUBOIDEAFasciculitubusCmuCmu
TUBOIDEAGaleograptusOuSWenl
TUBOIDEAKozlowskitubusOTremSLudl
TUBOIDEAParvitubusOArenOAren
TUBOIDEAReticulograptusOArenSWenl
TUBOIDEATubidendrumOTremOTrem
uncertainAcanthastusOTremOTrem
uncertainAellograptusCmDres-uCmDres-u
uncertainArchaeodictyotaCmDres-uOTrem-u
uncertainAscograptusSWenl-uSWenl-u
uncertainCactograptusSLdov-uSLdov-u
uncertainCeramograptusOuOu
uncertainChaunograptusCmmMidDGedi
uncertainCoelograptusSWenlSWenl
uncertainCrinocaulisSLdovSLdov
uncertainDithecodendrumCmuMidCmuMid
uncertainGraptoblastoidesOTremOLlde
uncertainGraptoblastusOTremOTrem
uncertainHaplograptusCm?O?
uncertainincertae sedisCmMid-uCmMid-u
uncertainLeveillitesSLdovSLdov
uncertainMastigograptusCmDres-uS?
uncertainMegaderaionJSine-lJSine-l
uncertainPalmatophycusSWenlSWenl
uncertainPilograptusCmFran-lCmFran-l
uncertainRuedemannograptusO?O?
uncertainSiberiodendrumCmmCmu
uncertainSiberiograptusCmuCmu
uncertainSiryngotaeniaOTrem-uOTrem-u

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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).