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

• 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

• 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