# List of prehistoric sponge genera

This list of prehistoric sponges is an attempt to create a comprehensive listing of all genera that have ever been included in the phylum Porifera, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered to be sponges.

## Naming conventions and terminology

Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include:
* Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen.
* Nomen nudum (Latin for "naked name"): A name that has appeared in print but has not yet been formally published by the standards of the ICZN. Nomina nuda (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum and will be italicized on this list. Often, the formally published name will differ from any nomina nuda that describe the same specimen.
* Nomen oblitum (Latin for "forgotten name"): A name that has not been used in the scientific community for more than fifty years after its original proposal.
* Preoccupied name: A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced. As preoccupied names are not valid generic names, they will also go unitalicized on this list.
* Nomen dubium (Latin for "dubious name"): A name describing a fossil with no unique diagnostic features. As this can be an extremely subjective and controversial designation, this term is not used on this list.

## A

* Acanothyra
* Acanthactinella
* Acanthastrella
* Acanthochaetetes
* Acanthocoryna
* Acanthodictya
* Acanthophora
* Acanthopyrgus (genus name already occupied by a grasshopper, synonym of Yukonensis
* Acanthoraphis
* Acanthospongia
* Achrochordiella
* Achrochordonia
* Acloeodictya
* Acoelia
* Acosmostroma
* Actinocoelia
* Actinodictya
* Actinodictyon
* Actinofungia
* Actinolites
* Actinostromaria
* Actinostromarianina
* Actinostromella
* Actostroma
* Aculatostroma
* Adrianella
* Adriatella
* Afiacyathus
* Agastrocyathus
* Aglithodictya
* Agyrekocyathus
* Ajacicyathellus
* Ajacicyathus
* Aka
* Aksopora
* Alaskacoscinus
* Alaskaspongia
* Alasonia
* Alataucyathus
* Alconeracyathus
* Alectona
* Allantospongia
* Alleynodictyon
* Allomera
* Allosaccus
* Alosculum
* Alphacyathus
* Alpinothalamia
* Altaicyathus
* Amblysiphonella
* Amblysiphonelloides
* Amnestostroma
* Amphilectella
* Amphipora
* Amphorithalamia
* Amsassia
* Anaptyctocyathus
* Andreaea (sponge)
* Angaricyathus
* Angullongia
* Annaecoelia
* Annulocyathella
* Annulocyathus
* Annulofungia
* Anomoclonella
* Anomorphites
* Anostylostroma
* Antarcticocyathus
* Anthaspidella
* Anthomorpha
* Anthracosycon
* Antoniocoscinus
* Antrispongia
* Antrospongia
* Aphlebospongia
* Aphrocallistes
* Aphrosalpinx
* Aplosphecion
* Aplysinofibra
* Apocoelia
* Aporosocyathus
* Aptocyathella
* Aptocyathus
* Arakespongia
* Araneosustroma
* Arborohindia
* Arbuscula
* Archaeocyathus
* Archaeodoryderma
* Archaeolynthus
* Archaeopharetra
* Archaeoscyphia
* Archaeosycon
* Arctostroma
* Ardrossacyathus
* Arimasia
* Armstrongia
* Arrythmocricus
* Arthaberia
* Arturocyathus
* Arystidictyon
* Asteractinella
* Asteriospongia
* Asterocyathus
* Asterospongia
* Asterotumulus
* Asthenospongia
* Astraeoconus
* Astraeospongium
* Astrobolia
* Astrocladia
* Astroconia
* Astrolemma
* Astropegma
* Astroporina
* Astrosclerida
* Astrostylopsis
* Astylomanon
* Astylospongia
* Astylospongiella
* Ataxiocyathus
* Atelodictyon
* Atopostroma
* Atrochaetetes
* Attungaia
* Aulacera
* Aulacosia
* Aulacospongia
* Aulaxinia
* Auliscocyathus
* Aulocopella
* Aulocopina
* Aulocopium
* Aulocricus
* Aulocyclus
* Aulodomus
* Aulophax
* Aulosoma
* Aulospongia
* Auroria
* Australispongia
* Azorica
* Azyrtalia

## B

* Baccispongia
* Bactronella
* Baikalocyathus
* Balantionella
* Balatonia
* Barrandeolites
* Barroisia
* Bathotheca
* Batschykicyathus
* Battaglia
* Bauneia
* Beaussetia
* Becksia
* Belemnospongia
* Belemnostroma
* Belonisia
* Beltanacyathus
* Belubulaia
* Belubulaspongia
* Bicolumnostratum
* Bicoscinus
* Bifariostroma
* Bipallicyathus
* Blastinia
* Blastinoidea
* Blastochaetetes
* Blastulospongia
* Boikothalamia
* Bolidium
* Bolitesia
* Bolojerea
* Bolospongia
* Boonderooia
* Borocyathus
* Bothoteca
* Bothrochlaenia
* Bothroconis
* Bothrolemma
* Botocyathus
* Botroclonium
* Botryodictya
* Botryosella
* Bottonaecyathus
* Brachiospongia
* Bractocyathus
* Brevisiphonella
* Brianispongia
* Brochodora
* Bullulodictyon
* Burgundia
* Butakovicyathus

## C

* Cadniacyathus
* Caesaria
* Calathiscus
* Calathospongia
* Calcihexactina
* Calcistella
* Calicia
* Caliculospongia
* Callicylix
* Callodictyon
* Callopegma
* Calthropella
* Calycocoelia
* Calycospongia
* Calymmatina
* Calyptocoscinus
* Calyptrella
* Cambrocyathells
* Camellaspongia
* Cameroptychium
* Camerospongia
* Canistrumella
* Capsospongia
* Capsulocyathus
* Carinacyathus
* Carnegiea
* Carphites
* Carpicyathus
* Carpospongia
* Carta
* Carterella
* Caryomanon
* Caryospongia
* Caseispongia
* Cassianochaetes
* Cassianostroma
* Cassianothalamia
* Catenispongia
* Cauliculospongia
* Caulophacus
* Cavispongia
* Cavusonella
* Cellicyathus
* Celyphia
* Ceotinella
* Cephalites
* Cephaloraphidites
* Ceraostroma
* Ceratodictya
* Ceratoporella
* Ceriodictyon
* Chaetetella
* Chaetetes
* Chaetetipora
* Chaetetopsis
* Chakassicyathus
* Chalaropegma
* Changicyathus
* Chankacyathus
* Chaunactis
* Cheilosporites
* Chenendopora
* Chiastoclonella
* Chirospongia
* Choia
* Choiaella
* Chondrocladia
* Chonellopsis
* Chouberticyathus
* Churanocyathus
* Cinclidella
* Cincliderma
* Cinnabaria
* Circopora
* Cladocoropsis
* Cladodermia
* Cladodia
* Cladolithosia
* Cladorhiza
* Claruscoscinus
* Clathricoscinus
* Clathricyathus
* Clathrispongia
* Clathrithalamus
* Clathrocoilona
* Clathrodictyella
* Clathrodictyon
* Clathrospongia
* Clathrostroma
* Clavidictyon
* Cleodictya
* Clepsydrospongia
* Clifdenella
* Climacospongia
* Cliona
* Cnemaulax
* Cnemicopanon
* Cnemidiastrum
* Coelocladia
* Coelocladiella
* Coeloconia
* Coelocorypha
* Coeloptychium
* Coeloscyphia
* Coelosphaeroma
* Coenostella
* Coenostroma
* Collatipora
* Colossolacis
* Colpospongia
* Columellaespongia
* Columna
* Columnostroma
* Compositocyathus
* Compsaspis
* Conannulofungia
* Condylacanthus
* Coniatopenia
* Coniculospongia
* Conispongia
* Conocoelia
* Constellatospongia
* Copleicyathus
* Corallidium
* Corallistes
* Cordilleracyathus
* Cordobicyathus
* Cornuaspongia
* Corralio
* Corticium
* Corticospongia
* Corticulospongia
* Corymbospongia
* Corynella
* Coscinaulus
* Coscinocyathella
* Coscinocyathellus
* Coscinocyathus
* Coscinodiscus
* Coscinopora
* Coscinoptycta
* Coscinospongia
* Cotylahindia
* Cotyliscus
* Còyptoporocyathus
* Craniella
* Crassicoscinus
* Crateromorpha
* Craticularia
* Cribrospongia
* Cribrothalamia
* Crispispongia
* Crucispongia
* Crumillospongia
* Cryptocoelia
* Cryptodictya
* Cryptophragmus
* Cucumaltina
* Cupulina
* Cyathocricus
* Cyathodictya
* Cyathophycus
* Cyathophyscus
* Cyathospongia
* Cycloclema
* Cyclocyathella
* Cyclostigma
* Cylicoopsis
* Cylindrophyma
* Cymbochlaenia
* Cypellia
* Cypellospongia
* Cyrtobolia
* Cysticyathus
* Cystispongia
* Cystistroma
* Cystocerium
* Cystostroma
* Cystothalamia
* Cystothalamiella
* Cytoracea

## D

* Dactylites
* Dactylocalycites
* Dactylocalyx
* Daharella
* Dailycyathus
* Deceptioncyathus
* Defordia
* Degeletticyathus
* Denaecyathus
* Dendroclonella
* Deningeria
* Densastroma
* Densocyathus
* Dentatocoscinus
* Dermatostroma
* Desmidopora
* Desmoderma
* Desmopora
* Desmostroma
* Devonospongia
* Diacyparia
* Diagoniella
* Diaplectia
* Diasterofungia
* Dichojerea
* Dicranoclonella
* Dictyocoelia
* Dictyocyathus
* Dictyofavus
* Dictyophyton
* Dictyorhabdus
* Dictyospongia
* Dictyosycon
* Didymocyathus
* Didymosphaera
* Diecithalamia
* Dierespongia
* Diestosphecion
* Dimorpha
* Diphyllospira
* Diplochaetetes
* Diplocyathellus
* Diplodictyon
* Diplopleura
* Diplostoma
* Diplostroma
* Discispongia
* Discocoeila
* Discodermia
* Discodermites
* Discophyma
* Discosiphonella
* Discostroma
* Disjectopora
* Disparistromaria
* Ditraenella
* Divaricospongia
* Docoderma
* Dokidocyathella
* Dokidocyathus
* Doryderma
* Dracolychnus
* Drosdoria
* Drosdovia
* Dunhillia
* Dupliporocyathus
* Dyoconia
* Dyocopanon
* Dysidea
* Dystactospongia

## E

* Ecblastesia
* Ecclimadictyon
* Echidnina
* Ectenodictya
* Edelsteinia
* Edriospongia
* Elasma
* Elasmalimus
* Elasmocoelia
* Elasmoierea
* Elasmostoma
* Ellesmerespongia
* Ellipsactinia
* Emploca
* Enaulofungia
* Endoplegma
* Endostoma
* Enoplocoelia
* Ensiferites
* Eochaunactis
* Eocoryne
* Eospongia
* Epeudea
* Epiplastospongia
* Epistomella
* Epitheles
* Erbocyathus
* Eremitacyathus
* Erineum
* Erismacoscinus
* Erugatocyathus
* Erylus
* Esperites
* Etalloniella
* Etheridgia
* Ethmocoscinus
* Ethmocyathus
* Ethmophyllum
* Eubrochis
* Eubrochus
* Eudea
* Eudictyon
* Euepirrhysia
* Euleraphe
* Euplectella
* Eurete
* Euryamphipora
* Eurydiscites
* Eusiphonella
* Eustrobilus
* Eutactostomium
* Euzittelia
* Euzkadiella
* Exanthesis
* Exochopora
* Exodictydia

## F

* Faciledictyon
* Fallocyathus
* Falospongia
* Faniathalamia
* Fansycyathus
* Farrea
* Farreopsis
* Favilynthus
* Favosichaetetes
* Feifelia
* Felixium
* Fenestrocyathus
* Fenestrospongia
* Ferestromatopora
* Fieldospongia
* Finksella
* Fissispongia
* Fistellaspongia
* Fistulimurina
* Fistulisponga
* Flabellispongia
* Flexanulus
* Flexiostroma
* Flosculus
* Foerstella
* Follicalena
* Forcepia
* Formosocyathus
* Forolina
* Fragilicyathus
* Fransuasaecyathus
* Frinalicyathus
* Fusiferella

## G

* Gabelia
* Gabrielsocyathus
* Gagarinicyathus
* Garraspongia
* Gaspespongia
* Gatagacyathus
* Geniculicyathus
* Geocyathus
* Geodia
* Geodiopsis
* Geodites
* Gerronodictyon
* Gerronostroma
* Gevreya
* Gigantospongia
* Gignouxia
* Gillettia
* Ginkgospongia
* Girtycoelia
* Glenodictyum
* Glomocystospongia
* Gloriosocyathus
* Glyptostromoides
* Gnaltacyathus
* Gomphites
* Gonamispongia
* Gondekia
* Gongylospongia
* Gordonicyathus
* Gordonifungia
* Goreauiella
* Graminospongia
* Graphoscyphus
* Gravestockia
* Griphodictya
* Grossotubenella
* Guadalupia
* Guettardiscyphia
* Guitarra
* Guizhouchaetetes
* Gumbycyathus
* Gyrispongia

## H

* Habrosium
* Habrostroma
* Halichondrites
* Halina
* Hallirhoa
* Hallodictya
* Halysicyathus
* Hamacantha
* Hammatostroma
* Hamptonia
* Hapalopegma
* Haplistion
* Haplistionella
* Hartmanina
* Hazelia
* Heckericyathus
* Heftastylis
* Helicodictya
* Helicolocellus
* Heliospongia
* Helminthophyllum
* Helobrachium
* Heloraphinia
* Hemidiscella
* Hemithalamocyathus
* Henricellum
* Heptastylis
* Hermatoporella
* Hermatostroma
* Hermatostromella
* Hesperocoelia
* Heteroraphidites
* Heterospongia
* Heterostella
* Heterostinia
* Hexactinella
* Hexactractiella
* Hexastylostroma
* Himatella
* Hindia
* Hintzesnonaia
* Hintzespongia
* Hippalimus
* Hispidopetra
* Hodsia
* Holasterella
* Holcospongia
* Holocoelia
* Holodictyon
* Homalodora
* Hormathospongia
* Hormospongia
* Hudsonella
* Hudsonospongia
* Hunanospongia
* Hupecyathellus
* Hupecyathus
* Hyaloderma
* Hyalonemia
* Hyalospongia
* Hyalostelia
* Hyalotragos
* Hydnoangulus
* Hydnoceras
* Hydnocerina
* Hydnodictya
* Hydriodictya
* Hymedesmia
* Hypothyra
* Hyptocyathus

## I

* Ichnospongia
* Ichnusocyathus
* Idiodictyon
* Idiostroma
* Iljinicyathus
* Imbricatocoelia
* Imperatoria
* Imponodictyon
* Inacyathella
* Incurvocyathus
* Inessocyathellus
* Inessocyathus
* Infexiostella
* Ingentilotus
* Inobolia
* Inodia
* Insulipora
* Intexodictyon
* Intextum
* Intrasporeocoelia
* Intratubospongia
* Iophon
* Iouea
* Iowaspongia
* Irinaecyathus
* Irregulatopora
* Ischadia
* Isispongia
* Isiticyathus
* Isoraphinia
* Itararella
* Ithacadictya

## J

* Jablonskyia
* Jakutocarinus
* Jangudacyathus
* Japhanicyathus
* Jawonya
* Jebileticoscinus
* Jerea
* Jereica
* Jereina
* Jereomorpha
* Jereopsis
* Jianghania
* Jima
* Joanaecyathus
* Jugalicyathus

## K

* Kalimnospongia
* Kalpinella
* Kaltatocyathus
* Karatubulus
* Kasyricyathus
* Kazania
* Kechikacyathus
* Kellericyathus
* Kentrosia
* Keriocoelia
* Keriocyathus
* Keriogastrospongia
* Khalfinaea
* Khasaktia
* Kidjasocyathus
* Kijacyathus
* Kisasacyathus
* Kiwetinokia
* Kiwicyathus
* Kolbicyathus
* Koleostoma
* Komia
* Konyrium
* Kordecyathus
* Korovinella
* Korshunovicyathus
* Kotuyicoscinus
* Kozlowskispongia
* Krasnopeevacyathus
* Kruseicnema
* Kyarocyathus
* Kymbecyathus
* Kyphoclonella

## L

* Labechia
* Labechiella
* Ladaecyathus
* Lamellata
* Lamellistroma
* Lamellopora
* Landercyathus
* Lanicyathus
* Laocaetis
* Lasiocladia
* Lasiothrix
* Latrunculia
* Laubenfelsia
* Lebedictya
* Lecanella
* Lecomptella
* Lefroyella
* Leinia
* Leiocarenus
* Leiochaetetes
* Leiochonia
* Leiodermatium
* Leiodorella
* Leiophyllum
* Leiospongia
* Leiostracosia
* Lemonea
* Lenica
* Lenocyathus
* Lepidospongia
* Leptolacis
* Leptomitella
* Leptomitus
* Leptophragma
* Leptopoterion
* Leptosocyathellus
* Leptosocyathus
* Lerouxia
* Leuconia
* Lewinia
* Lichuanopora
* Lichuanospongia
* Licmosinion
* Lineastroma
* Linochone
* Linonema
* Liscombispongia
* Lissocoelia
* Lithopora
* Lithostrobilis
* Litophyllum
* Loculicyathus
* Loganiella
* Lonsda
* Lopadophorus
* Lopanella
* Lophiostroma
* Ludictyon
* Lumectospongia
* Lunulacyathus
* Lychniscaulus
* Lyidium
* Lymnorea
* Lyrodictya
* Lysactinella

## M

* Macandrewia
* Macandrewites
* Mackenziecyathus
* Macrobrochus
* Madonia
* Maiandrocyathus
* Makiyama
* Malinowskiella
* Malluviospongia
* Malumispongium
* Mamelohindia
* Marginospongia
* Marinduqueia
* Markocyathus
* Marshallia
* Mastodictya
* Mastodictyum
* Mastophorus
* Mastophyma
* Mastosia
* Mattajacyathus
* Mattaspongia
* Matthewcyathus
* Mawsonicoscinus
* Meandripetra
* Meandrospongia
* Meandrostia
* Megalelasma
* Megalithistida
* Megaloraphium
* Megarhiza
* Megastroma
* Megastylia
* Melkanicyathus
* Melonanchora
* Melonella
* Membranacyathus
* Mennericyathus
* Merlia
* Metaldetes
* Metamsassia
* Metschnikowia
* Metyacyathellus
* Microblastidium
* Microcoryne
* Microdendron
* Microhemidiscia
* Microrhizophora
* Microstaura
* Mikhnocyathus
* Milleporella
* Milleporidium
* Mimeticosia
* Mixtusdictyon
* Moleculospina
* Molengraafia
* Molybdocyathus
* Monilispongia
* Mootwingeecyathus
* Morenicyathus
* Moretia
* Moretiella
* Moretispongia
* Mortieria
* Moskovia
* Mrassocyathus
* Muchattocyathus
* Muellerithalamia
* Multiloqua
* Multipocula
* Multistella
* Multivasculatus
* Murania
* Murguithalamia
* Myliusia
* Myrioporina
* Myrmecidium
* Myrmeciophytum
* Myrmecioptychium
* Mysterium
* Myxilla

## N

* Nabaviella
* Nalivkinicyathus
* Napaeana
* Nelumbia
* Nelumbifolium
* Nematinion
* Nematosalpinx
* Neobeatricea
* Neoguadalupia
* Neohindia
* Neoloculicyathus
* Neopelta
* Neosyringostroma
* Nepheliospongia
* Nephelispongia
* Neuropora
* Nevadathalamia
* Nevadocoelia
* Newellia
* Nibionia
* Nipterella
* Nitidus
* Nochoroicyathus
* Nodulipora
* Norfordia
* Nostrocyathus
* Novitella
* Nucha
* Nuratadictyon

## O

* Ocellaria
* Octobrum
* Oculospongia
* Offella
* Okulitchicyathus
* Okulitchina
* Olangocoelia
* Olgaecyathus
* Oligoplagia
* Olkenbachia
* Oncocladia
* Oncophora
* Oncosella
* Oncotoechus
* Opeamorphus
* Opetionella
* Ophiodesia
* Ophiraphidites
* Ophrystoma
* Oppligera
* Orbiasterocyathus
* Orbicoscinus
* Orbicyathellus
* Orbicyathus
* Ordinatus
* Orecyta
* Orienticyathus
* Ornatus
* Orospheciom
* Orthodiscus
* Ortmannia
* Ortmannispongia
* Oslodictyon
* Oxyrhizium
* Ozarkocoelia
* Ozospongia
* Ozotrachelus

## P

* Pachastrella
* Pachyascus
* Pachycalymma
* Pachycorynea
* Pachycoscinus
* Pachycothon
* Pachylepisma
* Pachymura
* Pachynion
* Pachypoterion
* Pachypsechia
* Pachyrachis
* Pachysalax
* Pachystylostroma
* Pachyteichisma
* Pachytheca
* Pachytilodia
* Palaeoaplysina
* Palaeoconularia
* Palaeojerea
* Palaeomanon
* Palaeophragmodictya
* Palaeophyma
* Palaeosaccus
* Palaeoschada
* Palaeostauronema
* Palermocoelia
* Palmatohindia
* Palmericyathus
* Pamirochaetetes
* Pamiropora
* Pamirostroma
* Panormida
* Pantokratoria
* Papillocyathus
* Paraaplysinofibria
* Paracoscinus
* Paracraticularia
* Paradeningeria
* Paraleptomitella
* Parallelopora
* Parallelostroma
* Paramblysiphonella
* Paranacyathus
* Paraspelaeum
* Parastromatopora
* Paravesicocaulis
* Parethmophyllum
* Parksia
* Parodospongia
* Paropsites
* Paruvanella
* Patanophyma
* Patellispongia
* Pattersonia
* Pelicaspongia
* Pennastroma
* Peregrinicyathus
* Perimera
* Periphragella
* Periplectum
* Perissocoelia
* Peronella
* Peronidella
* Perplexostroma
* Petalope
* Petroidistroma
* Petrosistroma
* Petrosites
* Petrostroma
* Phacellopegma
* Phalangium
* Phanerochiderma
* Pharetrospongia
* Pheronema
* Phialaspongia
* Phlyctaenium
* Phlyctia
* Phobetractinia
* Pholidocladia
* Phormosella
* Phragmocoelia
* Phragmodictya
* Phrissospongia
* Phyllodermia
* Phymaplecia
* Phymaplectia
* Phymaraphinia
* Phymatella
* Physocalpia
* Physospongia
* Piamaecyathellus
* Pichiostroma
* Pileolites
* Pileospongia
* Pinnatispongia
* Pirania
* Pisothalamia
* Placochlaenia
* Placojerea
* Placonella
* Placoscytus
* Placotrema
* Plakina
* Platiferostroma
* Platispongia
* Platychonia
* Platythalamiella
* Plectascus
* Plecteurette
* Plectinia
* Plectoderma
* Plectodermatium
* Plectospyris
* Plectostroma
* Plectroninia
* Pleroma
* Plethosiphonia
* Pleurochorium
* Pleuromera
* Pleurope
* Pleurophymia
* Pleuropyge
* Pleurostoma
* Plexodictyon
* Plicocyathus
* Pliegatella
* Plinthodermatium
* Plinthosella
* Pliobolia
* Plioboliopsis
* Plococonia
* Plocoscyphia
* Plumatalina
* Pocillospongia
* Podapsis
* Polyactinella
* Polyblastidium
* Polycnemiseudea
* Polycoscinus
* Polycystocoelia
* Polyedra
* Polyendostoma
* Polygonatium
* Polylophidium
* Polyosepia
* Polyplectella
* Polyrhipidium
* Polyrhizophora
* Polyschema
* Polysiphon
* Polysiphonella
* Polysiphospongia
* Polysiponeudea
* Polystigmatium
* Polystoma
* Polysyge
* Polytholosia
* Polythyra
* Polythyris
* Polytretia
* Porefieldia
* Poriferella
* Porkunites
* Porochonia
* Porocoscinus
* Porocypellia
* Porosphaera
* Porosphaerella
* Porospongia
* Poterionella
* Praeidiostroma
* Praethalamopora
* Precaratoporella
* Precorynella
* Prethmophyllum
* Preverticillites
* Prismodictya
* Procorallistes
* Procyathellus
* Proeuplectella
* Proeurete
* Prohexactinella
* Prokaliapsis
* Promillepora
* Propachastrella
* Propleroma
* Propriolynthus
* Proseliscothon
* Prosiphonella
* Protachilleum
* Protetraclis
* Protoarmstrongia
* Protohyalostelia
* Protoleucon
* Protopharetra
* Protoprisma
* Protospongia
* Protosycon
* Protremadictyon
* Psarodictyon
* Psephosyllogus
* Pseudoactinodictyon
* Pseudoactinostroma
* Pseudoamblysiphonella
* Pseudochaetetes
* Pseudoguadalupia
* Pseudoguettardia
* Pseudohydnoceras
* Pseudoimperatgoria
* Pseudojerea
* Pseudolabechia
* Pseudopalaeoaplysina
* Pseudopemmatites
* Pseudoplocoscyphia
* Pseudoporefieldia
* Pseudoscytalia
* Pseudoseliscothon
* Pseudoseptifer
* Pseudostromatoporella
* Pseudostylodictyon
* Pseudosyringocnema
* Pseudotrupetostroma
* Pseudoverruculina
* Pseudovirgula
* Psilocalyx
* Pterocalpia
* Ptretiosocyathus
* Ptychochaetetes
* Ptychodesia
* Pulchrilamina
* Purisiphonia
* Putapacyathus
* Pycnocalyptra
* Pycnoclonella
* Pycnodesma
* Pycnoidocoscinus
* Pycnoidocyathus
* Pycnopegma
* Pycnospongia
* Pyritonema
* Pyrogochonia
* Pyrospongia
* Pyruspongia

## Q

* Quadrolaminiella

## R

* Raanespongia
* Rackovskia
* Racodiscula
* Radicanalospongia
* Radicispongia
* Radioplica
* Radiostroma
* Radiothalamos
* Radiotrabeculopora
* Ragadinia
* Rahbahthalmia
* Ramalmerina
* Ramispongia
* Rankenella
* Raphidonema
* Rasetticyathus
* Ratcliffespongia
* Rauffia
* Rectannulus
* Regardrella
* Regispongia
* Regnardia
* Reiswigia
* Reniera
* Retecoscinus
* Retetumulus
* Reticulcoelia
* Reticullina
* Reticullina
* Retifungus
* Rhabdactinia
* Rhabdolynthus
* Rhabdosispongia
* Rhabdospongia
* Rhabdotum
* Rhagosplecion
* Rhakistella
* Rhaxella
* Rhaxelloides
* Rhizocheton
* Rhizopoteronopsis
* Rhizopsis
* Rhizopterion
* Rhizostele
* Rhizotetraclis
* Rhodanospongia
* Rhogostomium
* Rhombedonium
* Rhombodictyon
* Rhopalicna
* Rhopalocoelia
* Rhopaloconus
* Rhopalospongia
* Rhoptrum
* Rhytidoderma
* Riasanospongia
* Rigbyella
* Rigbyetia
* Rigbyspongia
* Ringifungia
* Robertiolynthus
* Robertocyathus
* Robustocyathellus
* Robustocyathus
* Roemerispongia
* Rosella
* Rosenellinella
* Rossocyathella
* Rotundocyathus
* Rozanovicoscinus
* Rozanovicyathus
* Rudanulus
* Russocyathus
* Russospongia
* Rutkowskiella

## S

* Saccospongia
* Sadleria
* Saetaspongia
* Sagittularia
* Sahraja
* Sajanocyathus
* Sajanolynthus
* Sakhacyathus
* Salairella
* Salairocyathus
* Salzburgia
* Sanarkocyathus
* Sanarkophyllum
* Sarophora
* Saynospongia
* Scheia
* Scheiella
* Scheielloides
* Schistodictyon
* Schizolites
* Schrammeniella
* Schumnyicyathus
* Scleritoderma
* Sclerocoelia
* Sclerocyathus
* Sclerokalia
* Scleroplegma
* Sclerothamnopsis
* Scolecosia
* Scolioraphis
* Scribroporella
* Scytalia
* Scythophyma
* Sebargasia
* Sekwicyathus
* Seliscothon
* Semperella
* Senowbaridaryana
* Sentinella
* Septochaetetes
* Seranella
* Sergaelites
* Sestrocladia
* Sestrodictyon
* Sestrostomella
* Shirdagopora
* Shiveligocyathus
* Shuqraia
* Sibirecyathus
* Sigmocoscinus
* Sigmocyathus
* Sigmofungia
* Silicunculus
* Simplexodictyon
* Sinodictyon
* Siphonia
* Siphonocoelia
* Siphostroma
* Solenocoelia
* Sollasia
* Somersetella
* Sontheimia
* Sphaeractinia
* Sphaeriella
* Sphaerocoelia
* Sphaerodictya
* Sphaeropegma
* Sphenaulax
* Spherolichaetetes
* Sphinctonella
* Spinocladia
* Spinosocyathus
* Spinospongia
* Spiractinella
* Spirillicyathella
* Spirolophia
* Spirospongia
* Spitsbergenia
* Spongelites
* Spongeoliomorpha
* Spongiomorpha
* Spongiothecopora
* Sporadoporidium
* Sporadopyle
* Sporadoscinia
* Squamosocyathus
* Stachyodes
* Stachyspongia
* Stamnia
* Staphylopora
* Stapicyathus
* Statanulocyathus
* Stauractinella
* Stauroderma
* Stauronema
* Steinerella
* Steineria
* Steinmanella
* Steliella
* Stellarispongia
* Stelletta
* Stellettites
* Stellispongia
* Stelodictyon
* Stephanella
* Stephanicyathus
* Stephenospongia
* Stereodictyum
* Stevocyathus
* Stichmaptyx
* Stichophyma
* Stictostroma
* Stillicidocyathus
* Stioderma
* Stiodermiella
* Stolleya
* Stramentella
* Stratispongia
* Stratodictyon
* Strephinia
* Streptosolen
* Streptospongia
* Stromaporidium
* Stromatidium
* Stromatoaxinellia
* Stromatocerium
* Stromatodictyon
* Stromatomorpha
* Stromatopora
* Stromatoporella
* Stromatoporellata
* Stromatoporellina
* Stromatoporina
* Stromatorhaxella
* Stromatorhiza
* Stromatospongia
* Stromatostroma
* Stylopegma
* Styloporella
* Stylostroma
* Stylothalamia
* Subascosymplegma
* Subtilocyathus
* Sulcastrella
* Svetlanocyathus
* Sycodictya
* Syltispongia
* Sylviacoscinus
* Synaulia
* Synopella
* Synthetostroma
* Synthetostroma
* Syringocnema
* Syringocyathus
* Syringodictyon
* Syringostroma
* Syringostromina
* Syringothalamus

## T

* Tabulacyathellus
* Tabulacyathus
* Taeniaecyathellus
* Takakkawia
* Taleastroma
* Talpaspongia
* Taplowia
* Taraxaculum
* Taylorcyathus
* Tchojacyathus
* Tebagathalamia
* Teganium
* Tegerocyathus
* Tennericyathus
* Tercyathellus
* Tercyathus
* Testispongia
* Tetillopsis
* Textispongia
* Thalamnohaliclona
* Thalamocyathus
* Thalamopora
* Thallospongia
* Thamnodictya
* Thamnonema
* Thamnospongia
* Thaumastocoelia
* Thecosiphonia
* Theneopsis
* Theonella
* Tholiasterella
* Thoosa
* Thrombus
* Thyroidium
* Thysanodictya
* Tiddalickia
* Tienodictyon
* Timorella
* Titusvillia
* Tiverina
* Tollicyathus
* Tolminothalamia
* Tologoicyathus
* Toomeyospongia
* Toquimiella
* Toriscodermia
* Torosocyathus
* Tosastroma
* Toulminia
* Trachydictya
* Trachynoton
* Trachyphlyctia
* Trachysinia
* Trachyspecion
* Trachysycon
* Trachytila
* Tragalimus
* Trammeria
* Tremabolites
* Tremadictyon
* Tremaphorus
* Tremospongia
* Tretocalia
* Tretodictyum
* Tretoechus
* Triadocoelia
* Trichospongia
* Trigonostroma
* Trininaecyathus
* Tristratocoelia
* Triticispongia
* Trochobolus
* Trupetostroma
* Tubericyathus
* Tubicoscinus
* Tubispongia
* Tubuliella
* Tubuliporella
* Tumulifungia
* Tumuliolynthus
* Tumulocoscinus
* Tumulocyathus
* Turonia
* Tuvacnema
* Twenhofelella
* Tylocyathus
* Typhlopleura

## U

* Ubiquiradius
* Uphantena
* Uralonema
* Uranosphaera
* Urcyathella
* Urcyathus
* Urnacristata
* Usloncyathus
* Ussuricyathus
* Uvacoelia
* Uvanella
* Uvothalamia

## V

* Vaceletia
* Valhalla
* Valospongia
* Varneycoelia
* Vascothalamia
* Vascothalmia
* Vaurealispongia
* Vauxia
* Velellospongia
* Ventriculites
* Vermiculissimum
* Veronicacyathus
* Verrucospongia
* Verruculina
* Verticillites
* Vesicocaulis
* Vetulina
* Vikingia
* Virgaspongia
* Virgula
* Virmula
* Vittia
* Vologdinocyathellus
* Vologdinocyathus

## W

* Waagenium
* Wagima
* Walliospongia
* Wanella
* Wapkia
* Wapkiosa
* Wareembra
* Wareiella
* Warrigalia
* Warrriootacyathus
* Welteria
* Wewokella
* Williamicyathus
* Winwoodia
* Wollemannia
* Wongaspongia
* Wrighticyathus

## X

* Xestecyathus
* Xizangstromatopora
* Xylospongia

## Y

* Yabeodictyon
* Yavorskiina
* Youngella
* Yrrhiza
* Yudjaicyathus
* Yukonella
* Yukonocyathus
* Yukonensis

## Z

* Zangerlispongia
* Zanklithalamia
* Zardinia
* Zeravshanella
* Zhuravlevaecyathus
* Zigzagella
* Zittelella
* Zitteleus
* Zittelispongia
* Zittelospongia
* Zlambachella
* Zonacoscinus
* Zonacyathus
* Zunyicyathus