Porella Gray, 1848

Type species: Millepora compressa J.Sowerby, 1805

Synonyms Author Type species
Grayporella Annoscia, 1969  
Levinseniula Cossman, 1920  
Porelloides Hayward, 1979 Cellepora laevis Fleming, 1828

This genus includes the species:

  1. Porella abdita
    		2.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA Florida, Poland? WoRMS 1406896
  2. Porella acutirostris
    		3.  Smitt, 1868 Recent
    Neogene    		 Arctic, N. Atlantic, N Pacific
    Japan    		 WoRMS 111121
  3. Porella alba
    		4.  Nordgaard, 1906 Recent Arctic, N. Atlantic WoRMS 111122
  4. Porella ammense
    		5.  Winston & Hayward, 2012 Recent Northwest Atlantic USA WoRMS 607828
  5. Porella andrejashevi
    		6.  Gontar, 1993 Recent Antarctic WoRMS 469165
  6. Porella angustata
    		7.  Maplestone, 1902 Neogene Miocene Australia Victoria WoRMS 1406897
  7. Porella aperta
    		8.  (Boeck, 1862) Recent Arctic WoRMS 423677
  8. Porella areolata
    		9.  Ortmann, 1890 Recent Northwest Pacific - Japan WoRMS 1036396
  9. Porella areolata
    (Homonym)
    		10.  Maplestone, 1902 Oligocene- Miocene Australia Victoria WoRMS 1415280
  10. Porella baculina
    		11.  Canu & Bassler, 1935 Oligocene- Miocene Australia Victoria WoRMS 1406898
  11. Porella belli
    		12.  (Dawson, 1859) Recent N. Atlantic WoRMS 111123
  12. Porella biserialis
    		13.  Souto, Berning & Ostrovsky, 2016 Recent Northeast Atlantic Spain WoRMS 868423
  13. Porella bispina
    		14.  O'Donoghue & O'Donoghue, 1923 Recent N. Pacific WoRMS 469172
  14. Porella capensis
    		15.  O'Donoghue, 1924 Recent S. Africa WoRMS 469159
  15. Porella capitata
    		16.  Faura & Canu, 1916 Paleogene Eocene Priabonian Spain WoRMS 1406899
  16. Porella chadleyi
    		17.  De Blauwe, 2025 Recent Northeast Atlantic Belgium WoRMS 1840733
  17. Porella chiumeiae
    		18.  Hu, 1986 Pleistocene Taiwan WoRMS 1406900
  18. Porella circumcincta
    		19.  (Reuss, 1869) Paleogene Eocene Priabonian Italy WoRMS 1413093
  19. Porella circumornata
    		20.  (Reuss, 1848) Neogene Miocene Tortonian Austria, Hungary WoRMS 1413094
  20. Porella clavula
    		21.  (Canu & Bassler, 1920) Paleogene Austria, Hungary WoRMS 1413095
  21. Porella collifera
    		22.  Ulrich & Bassler, 1904 Neogene Miocene Serravallian-Tortonian USA Maryland WoRMS 1406901
  22. Porella columbiana
    		23.  O'Donoghue & O'Donoghue, 1923 Recent
    Neogene Miocene    		 NE Pacific
    Japan    		 WoRMS 469160
  23. Porella compacta
    		24.  Canu & Bassler, 1920 Paleogene Oligocene, Neogene Miocene USA Mississippi, Louisiana WoRMS 1406902
  24. Porella compressa
    		25. (J.Sowerby, 1805) Recent NE Atlantic WoRMS 111124
  25. Porella concinna
    		26. (Busk, 1854) Recent NE Atlantic, Mediterranean WoRMS 111125
  26. Porella concinna tubulata
    		27.  Calvet, 1927 Recent Mediterranean WoRMS 111774
  27. Porella? concreta
    		28.  Brown, 1952 Neogene Miocene New Zealand WoRMS 1406903
  28. Porella? cornuta
    		29.  Levinsen, 1909 Recent Northwest Pacific - Japan WoRMS 1036419
  29. Porella coronata
    		30.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA WoRMS 1406904
  30. Porella coronata moodysbranchensis
    		31.  McGuirt, 1941 Paleogene Eocene Priabonian USA Louisiana WoRMS 1414983
  31. Porella crassoparies
    		32.  Canu & Bassler, 1920 Paleogene Oligocene Rupelian USA, Alabama WoRMS 1406905
  32. Porella cyclochyla
    		33.  Lagaaij, 1952 Neogene Pliocene Piacenzian Netherlands WoRMS 1406906
  33. Porella cylindrica
    		34.  Canu & Bassler, 1920 Paleogene Oligocene Rupelian USA, Alabama WoRMS 1406907
  34. Porella cylindrorostris
    		35.  Canu & Bassler, 1935 Paleogene Oligocene Chattian SE Australia WoRMS 1406908
  35. Porella cymosa
    		36.  Hayward, 1994 Recent N Atlantic WoRMS 111126
  36. Porella decorata
    		37.  Li, 1990 Neogene Miocene France WoRMS 1406909
  37. Porella? dennanti
    		38.  Maplestone, 1902 Neogene Miocene SE Australia WoRMS 1406910
  38. Porella denticulata
    		39.  (Stoliczka, 1865) Neogene Miocene New Zealand WoRMS 1413096
  39. Porella donoghueorum
    		40.  Dick, Grischenko & Mawatari, 2005 Recent Northeast Pacific Alaska WoRMS 389634
  40. Porella eocaena
    		41.  Neviani, 1905 Paleogene Eocene Spain WoRMS 1406911
  41. Porella erecta
    		42.  Canu & Bassler, 1920 Paleogene Oligocene Rupelian USA Alabama WoRMS 1406912
  42. Porella erecta
    (Homonym)
    		43.  David & Pouyet, 1972 Neogene Miocene Burdigalian France WoRMS 1406913
  43. Porella? excavata
    		44.  Canu & Bassler, 1935 Paleogene Oligocene Chattian Australia Victoria WoRMS 1406914
  44. Porella fragilis
    		45.  Levinsen, 1914 Recent Arctic WoRMS 156356
  45. Porella granulosa
    		46.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA Mississippi WoRMS 1406915
  46. Porella gregoryana
    		47.  Canu, 1911 Late Cretaceous Argentina WoRMS 1406916
  47. Porella hanaishiensis
    		48.  Hayami, 1975 Neogene Pliocene Japan WoRMS 1406917
  48. Porella hyadesi
    		49.  Jullien, 1888 Recent S. Atlantic WoRMS 469174
  49. Porella immersa
    		50.  Mawatari, 1956 Recent NW Pacific WoRMS 469161
  50. Porella inflata
    		51.  Waters, 1900 Recent Arctic WoRMS 1036397
  51. Porella innocua
    		52.  MacGillivray, 1895 Neogene Miocene SE Australia WoRMS 1406918
  52. Porella irregularis
    		53.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA Mississippi WoRMS 1406919
  53. Porella jacksonica
    		54.  Canu & Bassler, 1920 Paleogene Eocene Priabonian SE USA WoRMS 1406920
  54. Porella kurilensis
    		55.  Mawatari, 1956 Recent NW Pacific WoRMS 469169
    Porella laevis (Fleming, 1828) Recent NE Atlantic, Arctic WoRMS 111128
  55. Porella levinseni
    		56.  Canu, 1911 Late Cretaceous Argentina WoRMS 1406921
  56. Porella major
    		57.  Hincks, 1884 Recent Northeast Pacific Canada WoRMS 469162
  57. Porella marukawai
    		58.  Okada, 1918 Recent NW Pacific WoRMS 469173
  58. Porella mesoatlantica
    		59.  Souto, 2019 Recent Atlantic Hayes FZ WoRMS 1354158
  59. Porella minuta
    		60.  (Norman, 1868) Recent NE Atlantic, Mediterranean WoRMS 111129
  60. Porella minuta orientalis
    		61.  Kluge, 1955 Recent N. Pacific WoRMS 472651
  61. Porella minuta punctata
    		62.  Waters, 1899 Recent East Atlantic Madeira WoRMS 1036411
  62. Porella monops
    		63.  Römer, 1863 Paleogene Oligocene Rupelian Germany WoRMS 1406922
  63. Porella montgomeryensis
    		64.  McGuirt, 1941 Paleogene Oligocene Rupelian USA Louisiana WoRMS 1406923
  64. Porella mucronata
    		65.  Mawatari, 1956 Recent N. Pacific WoRMS 469168
  65. Porella mutabilis
    		66.  Canu & Lecointre, 1930 Neogene Miocene France WoRMS 1406924
  66. Porella normani
    		67.  Kluge, 1908 Recent Arctic WoRMS 1036410
  67. Porella nuda
    		68.  (Reuss, 1874) Neogene Miocene Tortonian Austria WoRMS 1413097
  68. Porella obliqua
    		69.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA Georgia WoRMS 1406925
  69. Porella obliquotella
    		70.  Canu, 1926 Paleogene Eocene Bartonian France, Belgium WoRMS 1406926
  70. Porella occulta
    		71.  Harmer, 1957 Recent Indonesia WoRMS 469158
  71. Porella? otwayensis
    		72.  (Maplestone, 1902) Paleogene Eocene/Oligocene SE Australia WoRMS 1413098
  72. Porella ouachitaensis
    		73.  McGuirt, 1941 Paleogene Eocene Priabonian USA Louisiana WoRMS 1406927
  73. Porella pacifica
    		74.  O'Donoghue, 1925 Recent Northeast Pacific WoRMS 1036413
  74. Porella patens
    		75.  Osburn, 1952 Recent East Pacific WoRMS 469170
  75. Porella patula
    		76.  (M.Sars, 1851) Recent Arctic, N. Atlantic WoRMS 111130
  76. Porella peristomata
    		77.  (Nordgaard, 1905) Recent Arctic, N. Atlantic WoRMS 111131
  77. Porella planulata
    		78.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA North Carolina WoRMS 1406928
  78. Porella porifera
    		79.  (Hincks, 1884) Recent
    Pleistocene    		 NE Pacific
    USA California    		 WoRMS 469163
  79. Porella portentosa
    		80.  Canu & Bassler, 1920 Paleogene Eocene Priabonian SE USA WoRMS 1406929
  80. Porella proboscidea
    		81.  Hincks, 1888 Recent Arctic WoRMS 111133
  81. Porella pulchra?
    		82.  Canu & Bassler, 1929 Cenozoic Belgium, Netherlands WoRMS 1406930
  82. Porella pungens
    		83.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA Mississippi WoRMS 1406931
  83. Porella rarecostulata
    		84.  Canu, 1914 Paleogene Oligocene France WoRMS 1406932
  84. Porella reduplicata
    		85.  (Osburn, 1933) Recent NW Atlantic WoRMS 469171
  85. Porella regularis
    		86.  (Reuss, 1874) Neogene Miocene Czech Republic WoRMS 1413099
  86. Porella rhomboidalis
    		87.  Canu, 1908 Neogene Miocene Argentina WoRMS 1406933
  87. Porella rhomboidalis
    (Homonym)
    		88.  Maplestone, 1902 Neogene Miocene Langhian Australia Victoria WoRMS 1406934
  88. Porella rhomboidalis crassimarginata
    		89.  Canu & Bassler, 1935 Neogene Miocene Langhian Australia Victoria WoRMS 1414984
  89. Porella rhomboidalis parviapertura
    		90.  Canu & Bassler, 1935 Neogene Miocene Langhian Australia Victoria WoRMS 1414985
  90. Porella rogeri
    		91.  Brown, 1958 Neogene Miocene SE Australia WoRMS 1406935
  91. Porella rotundirostris
    		92.  Liu, 1990 Recent China WoRMS 469166
  92. Porella semiluna
    		93.  (Reuss, 1865) Paleogene Oligocene Rupelian Germany WoRMS 1413100
  93. Porella sinuosa
    		94.  (Busk, 1859) Neogene Pliocene England, Netherlands WoRMS 1413101
  94. Porella smitti
    		95.  Kluge, 1907 Recent Arctic WoRMS 111134
  95. Porella soellingensis
    		96.  (Reuss, 1865) Paleogene Oligocene Rupelian Germany WoRMS 1413102
  96. Porella sphaerica
    		97.  Canu, 1908 Neogene Miocene Argentina WoRMS 1406936
  97. Porella struma
    		98.  (Norman, 1868) Recent Arctic, N. Atlantic WoRMS 111135
  98. Porella subcompressa
    		99.  Busk, 1884 Recent East Atlantic Cape Verde WoRMS 469175
  99. Porella taylori
    		100.  Soule, Soule & Chaney, 1995 Recent NE Pacific WoRMS 469164
  100. Porella tenuis
    		101.  Koschinsky, 1885 Paleogene Eocene Lutetian Germany WoRMS 1406937
  101. Porella tenuis
    (Homonym)
    		102.  (Calvet, 1906) Recent Mediterranean WoRMS 868431
  102. Porella tiorioriensis
    		103.  Gordon & Taylor, 2015 Paleogene Eocene Ypresian New Zealand Chatham Islands WoRMS 1406938
  103. Porella transversalis
    		104.  Ortmann, 1890 Recent Northwest Pacific - Japan WoRMS 1036415
  104. Porella tridentata
    		105.  Pratt, 1898 Recent South Atlantic Falklands WoRMS 1036418
  105. Porella tuberosa
    		106.  Canu & Bassler, 1935 Neogene Miocene Langhian Australia Victoria WoRMS 1406939
  106. Porella tumida
    		107. Kluge, 1955 Recent Arctic WoRMS 156358
  107. Porella turgidula
    		108.  Hayward, 1994 Recent N. Atlantic WoRMS 111137
  108. Porella unguiculata
    		109.  Canu & Bassler, 1920 Paleogene Eocene Priabonian USA North Carolina WoRMS 1406940
[Porella belli] [Porella compressa] [Small Porella concinna] [Porella laevis]
Porella belli Porella compressa Porella concinna Porella laevis
(thanks to Dennis Gordon, NIWA)

Harmer notebook - entry for Levinseniula
Harmer notebook - entry for Marsillea
Harmer notebook - entry for Porella

This information is based upon various sources, but no personal knowledge. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut.
I would be grateful for corrections to, or critical reviews of this information. This is not a 'final' version (an impossible ideal), but a working document.
A large number of species in this list probably are not related to the type species: some may be be allied to Aimulosia.

Porella hanaishiensis at Pleistocene Bryozoa of Kuromatsunai, Japan.

Porella compressa at Encyclopedia of Marine Life of Britain and Ireland.

Porella compressa at Bryozoa of the British Isles
Porella concinna at Bryozoa of the British Isles

Porella acutirostris at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella alba at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella aperta at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella belli at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella compressa at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella concinna at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella fragilis at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella minuta at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella peristomata at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella proboscidea at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella smitti at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella struma at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Porella tumida at Atlas of Arctic Bryozoa - Piotr Kuklinski.

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Edited by Phil Bock
Modified on 25/01/2016
Modified on 25/9/2017 (Added several species)
Modified on 1/9/2018 (Porella compressa date corrected from 1805 to 1806)
Modified on 12/3/2019 (Moved P.reversa to Metroperiella)
Modified on 30/6/2019 (Added H.mesoatlantica)
Modified on 17/6/2020 (Added WoRMS links)
Modified on 21/10/2025 (Added P.chadleyi)
Modified on 22/3/2022
This URL is http://bryozoa.net/cheilostomata/bryocryptellidae/porella.html