Pac
Pachastrella Schmidt, 1868
- Pachastrella abyssi Schmidt, 1870
- Pachastrella caliculata Kirkpatrick, 1902
- Pachastrella chuni Lendenfeld, 1907
- Pachastrella cribrum Lebwohl, 1914
- Pachastrella dilifera de Laubenfels, 1934
- Pachastrella echinorhabda Pulitzer-Finali, 1972
- Pachastrella fusca Lebwohl, 1914
- Pachastrella incrustata Bergquist, 1968
- Pachastrella isorrhopa Kirkpatrick, 1902
- Pachastrella monilifera Schmidt, 1868
- Pachastrella multipora Dickinson, 1945
- Pachastrella nodulosa Cárdenas & Rapp, 2012
- Pachastrella ovisternata Lendenfeld, 1894
- Pachastrella pacoi Van Soest, Meesters & Becking, 2014
- Pachastrella scrobiculosa Lebwohl, 1914
Porifera → Demospongiae → Heteroscleromorpha → Tetractinellida → Astrophorina → Pachastrellidae
Porodica Pachastrellidae Carter 1875
- Acanthotriaena Vacelet, Vasseur & Lévi, 1976
- Ancorella Lendenfeld, 1907
- Brachiaster Wilson, 1925
- Characella Sollas, 1886
- Lamellomorpha Bergquist, 1968
- Nethea Sollas, 1888
- Pachastrella Schmidt, 1868
- Triptolemma de Laubenfels, 1955
Porifera → Demospongiae → Heteroscleromorpha → Tetractinellida → Astrophorina
Pachychalina Schmidt, 1868
- Pachychalina acapulcensis Wilson, 1904
- Pachychalina alcaloidifera Pinheiro, Berlinck & Hajdu, 2005
- Pachychalina alveopora Topsent, 1906
- Pachychalina arctica (Miklucho-Maclay, 1870)
- Pachychalina erinacea Goodwin, Jones, Neely & Brickle, 2011
- Pachychalina fracta Hentschel, 1929
- Pachychalina glacialis (Burton, 1934)
- Pachychalina rustica Schmidt, 1868
- Pachychalina schmidti Lundbeck, 1902
- Pachychalina subcapitata (Lévi, 1961)
Porifera → Demospongiae → Heteroscleromorpha → Haplosclerida → Niphatidae
Pachydictyum Weltner, 1901
- Pachydictyum globosum Weltner, 1901
Porifera → Demospongiae → Heteroscleromorpha → Spongillida → Malawispongiidae
Pachymatisma Bowerbank in Johnston, 1842
- Pachymatisma areolata Bowerbank, 1872
- Pachymatisma bifida Burton, 1959
- Pachymatisma johnstonia (Bowerbank in Johnston, 1842)
- Pachymatisma monaena Lendenfeld, 1907
- Pachymatisma nodosa Sim-Smith & Kelly, 2015
- Pachymatisma normani Sollas, 1888
Porifera → Demospongiae → Tetractinellida → Astrophorina → Geodiidae → Erylinae
Pachypellina Burton, 1934
- Pachypellina fistulata (Kirkpatrick, 1907)
Porifera → Demospongiae → Heteroscleromorpha → Haplosclerida → Phloeodictyidae
Pachyrotula Volkmer-Ribeiro & Rützler, 1997
- Pachyrotula raceki (Rützler, 1968)
Porifera → Demospongiae → Heteroscleromorpha → Spongillida → Spongillidae
Pal
†Palaeospongilla Ott & Volkheimer, 1972
- †Palaeospongilla chubutensis Ott & Volkheimer, 1972
Porifera → Demospongiae → Heteroscleromorpha → Spongillida → Palaeospongillidae
†Porodica Palaeospongillidae Volkmer-Ribeiro & Reitner, 1991
- Eospongilla Dunagan, 1999 †
- Lutetiospongilla Richter & Wuttke, 1999 †
- Palaeospongilla Ott & Volkheimer, 1972 †
Porifera → Demospongiae → Heteroscleromorpha → Spongillida → Palaeospongillidae
Pan
Pandaros Duchassaing & Michelotti, 1864
- Pandaros acanthifolium Duchassaing & Michelotti, 1864
Porifera → Demospongiae → Heteroscleromorpha → Poecilosclerida → Microcionidae → Microcioninae
Par
Paracornulum Hallmann, 1920
- Paracornulum coherens Lévi, 1963
- Paracornulum dubium (Hentschel, 1912)
- Paracornulum fistulosum Sutcliffe, Hooper & Pitcher, 2010
- Paracornulum sinclairae Bergquist & Fromont, 1988
- Paracornulum strepsichela (Dendy, 1922)
Porifera → Demospongiae → Heteroscleromorpha → Poecilosclerida → Acarnidae
Paradesmanthus Pisera & Lévi, 2002
- Paradesmanthus macphersoni (Uriz, 1988)
Porifera → Demospongiae → Heteroscleromorpha → Bubarida → Desmanthidae
Paragrantia Hôzawa, 1940
- Paragrantia waguensis Hôzawa, 1940
Porifera → Calcarea → Calcaronea → Leucosolenida → Grantiidae
Paraheteropia Borojevic, 1965
- Paraheteropia ijimai (Hozawa, 1916)
Porifera → Calcarea → Calcaronea → Leucosolenida → Heteropiidae
Parahigginsia Dendy, 1924
- Parahigginsia phakelloides Dendy, 1924
- Parahigginsia strongylifera Van Soest, Meesters & Becking, 2014
Porifera → Demospongiae → Heteroscleromorpha → Axinellida → Heteroxyidae
Paralelapia Hozawa, 1923
- Paralelapia nipponica (Hara, 1894)
Porifera → Calcarea → Calcaronea → Leucosolenida → Lelapiidae
Paraleucilla Dendy, 1892
- Paraleucilla crosslandi (Row, 1909)
- Paraleucilla cucumis (Haeckel, 1872)
- Paraleucilla incomposita Cavalcanti, Menegola & Lanna, 2014
- Paraleucilla magna Klautau, Monteiro & Borojevic, 2004
- Paraleucilla oca Cavalcanti, Menegola & Lanna, 2014
- Paraleucilla perlucida Azevedo & Klautau, 2007
- Paraleucilla princeps (Row & Hozawa, 1931)
- Paraleucilla proteus (Dendy, 1913)
- Paraleucilla saccharata (Haeckel, 1872)
- Paraleucilla solangeae Cavalcanti, Menegola & Lanna, 2014
- Paraleucilla sphaerica Lanna, Cavalcanti, Cardoso, Muricy & Klautau, 2009
Porifera → Calcarea → Calcaronea → Leucosolenida → Amphoriscidae
Paramurrayona Vacelet, 1967
- Paramurrayona corticata Vacelet, 1967
Porifera → Calcarea → Calcinea → Murrayonida → Paramurrayonidae
Porodica Paramurrayonidae Vacelet, 1967
- Paramurrayona Vacelet, 1967
Porifera → Calcarea → Calcinea → Murrayonida → Paramurrayonidae
Pararete Ijima, 1927
- Pararete baliense Ijima, 1927
- Pararete carteri (Schulze, 1886)
- Pararete farreopsis (Carter, 1877)
- Pararete freeri Ijima, 1927
- Pararete gerlachei (Topsent, 1901)
- Pararete kangeanganum Ijima, 1927
- Pararete semperi (Schulze, 1886)
Porifera → Hexactinellida → Hexactinosida → Sceptrulophora → Euretidae → Euretinae
Pararhaphoxya Burton, 1934
- Pararhaphoxya pulchra (Brøndsted, 1924)
- Pararhaphoxya sinclairi (Gray, 1847)
- Pararhaphoxya tenuiramosa Burton, 1934
Porifera → Demospongiae → Heteroscleromorpha → Axinellida → Axinellidae
Paratetilla Dendy, 1905
- Paratetilla amboinensis (Kieschnick, 1898)
- Paratetilla aruensis Hentschel, 1912
- Paratetilla bacca (Selenka, 1867)
- Paratetilla corrugata Dendy, 1922
- Paratetilla lipotriaena de Laubenfels, 1954
Porifera → Demospongiae → Heteroscleromorpha → Tetractinellida → Spirophorina → Tetillidae
Paratimea Hallmann, 1917
- Paratimea alijosensis Austin, 1996
- Paratimea arbuscula (Topsent, 1928)
- Paratimea azorica (Topsent, 1904)
- Paratimea constellata (Topsent, 1893)
- Paratimea duplex (Topsent, 1927)
- Paratimea galaxa de Laubenfels, 1936
- Paratimea globastrella van Soest, Kaiser & Van Syoc, 2011
- Paratimea loennbergi (Alander, 1942)
- Paratimea loricata (Sarà, 1958)
- Paratimea oxeata Pulitzer-Finali, 1978
- Paratimea pierantonii (Sarà, 1958)
Porifera → Demospongiae → Heteroscleromorpha → Axinellida → Stelligeridae