 Acanthodesmia micropora
(Popofsky, 1908) |  Acanthodesmia vinculata
(Müller, 1858) |
 Acanthosphaera actinota
(Haeckel, 1862) |  Acanthosphaera bernardi
Blueford, 1982 |
 Acanthosphaera macropora
Haeckel, 1887 |  Acrobotrys cribosa
(Popofsky, 1913) |
 Acrobotrys disolenia
Haeckel, 1887 |  Acrobotrys teralans
Renz, 1976 |
 Acrosphaera australis
Lazarus, 1990 |  Acrosphaera cyrtodon
Haeckel, 1887 |
 Acrosphaera lappacea
(Haeckel, 1887) |  Acrosphaera mercurius
Lazarus, 1992 |
 Acrosphaera murrayana
(Haeckel, 1887) |  Acrosphaera pseudarktios
Caulet, 1986 |
Acrosphaera pseudarktios
Caulet, 1986 |  Acrosphaera spinosa
(Haeckel, 1861) |
 Acrosphaera spinosa echinoides
Haeckel, 1887 |  Acrosphaera spinosa fasciculopora
Caulet, 1986 |
 Acrosphaera spinosa hamospina
Caulet, 1986 |  Acrosphaera trepanata
(Haeckel, 1887) |
 Acrosphaera? labrata
Lazarus, 1992 |  Acrospyris lingi
Shilov, 1995 |
 Actinomma antarcticum
(Haeckel, 1887) |  Actinomma acusosum
Blueford, 1982 |
 Actinomma boreale
Cleve, 1899 |  Actinomma buspinigerum
(Hays, 1965) |
 Actinomma delicatulum
(Dogiel and Reschetnjak, 1952) |  Actinomma golownini
Petrushevskaya, 1975 |
 Actinomma henningsmoeni
Goll and Bjørklund, 1989 |  Actinomma holtedahli
Bjørklund, 1976 |
 Actinomma kerguelenensis
Caulet, 1991 |  Actinomma leptoderma longispina
Cortese and Bjørklund, 1998 |
 Actinomma leptodermum
(Jørgensen, 1900) |  Actinomma livae
Goll and Bjørklund, 1989 |
 Actinomma medianum
Nigrini, 1967 |  Actinomma medusa
(Ehrenberg, 1844) |
 Actinomma popofskii
(Petrushevskaya, 1967) |  Actinomma sol
Cleve, 1901 |
 Actinomma sp.
det. Benson, 2003 |  Actinomma trinacrium
Haeckel, 1860 |
 Actinomma yosii
Nakaseko, 1959 |  Actinomma? magnifenestra
Lazarus, 1992 |
 Actinosphaera acanthophora
(Popofsky, 1912) |  Actinosphaera haackei
(Dreyer, 1973) |
 Albatrossidium minzok
Sanfilippo and Riedel, 1992 |  Amphimelissa setosa
(Cleve, 1899) |
 Amphiplecta acrostoma
Haeckel, 1887 |  Amphiplecta sp.
Petrushevskaya, 1971 |
 Amphiplecta tripleura
Funakawa, 1995 |  Amphirhopalum virchowii
(Haeckel, 1862) |
 Amphirhopalum ypsilon
Haeckel, 1887 |  Amphisphaera aotea
Hollis, 1993 |
 Amphisphaera cristata
Carnevale, 1908 |  Amphisphaera goruna
(Sanfilippo and Riedel, 1973) |
 Amphisphaera kina
Hollis, 1993 |  Amphisphaera minor
(Clark and Campbell, 1942) |
 Amphispyris roggentheni
Goll, 1980 |  Amphistylus angelinus
(Campbell and Clark, 1944) |
 Amphitholus acanthometra
Haeckel, 1887 |  Amphymenium amphystylium
Haeckel, 1887 |
 Amphymenium challengerae
Weaver, 1983 |  Androcyclas gamphonycha
(Jørgensen, 1900) |
 Androspyris anthropiscus
Haeckel, 1887 |  Androspyris fenestrata
(Haeckel, 1887) |
 Androspyris huxleyi
(Haeckel, 1887) |  Anomalacantha dentata
(Mast, 1910) |
 Antarctissa (?) robusta
Petrushevskaya, 1975 |  Antarctissa cylindrica
Petrushevskaya, 1975 |
 Antarctissa deflandrei
(Petrushevskaya, 1975) |  Antarctissa denticulata
(Ehrenberg, 1844) |
 Antarctissa strelkovi
Petrushevskaya, 1967 |  Antarctissa whitei
Bjørklund, 1976 |
 Anthocyrtella (?) callopisma
Caulet, 1986 |  Anthocyrtella (?) kruegeri
Popofsky, 1908 |
 Anthocyrtidium adiaphorum
Sanfilippo and Riedel, 1992 |  Anthocyrtidium angulare
Nigrini, 1971 |
 Anthocyrtidium euryclathrum
Nigrini and Caulet, 1988 |  Anthocyrtidium marieae
O'Connor, 1997 |
 Anthocyrtidium ophirense
(Ehrenberg, 1872) |  Anthocyrtidium pliocenica
Seguenza, 1880 |
 Anthocyrtidium stenum
Sanfilippo and Riedel, 1992 |  Anthocyrtidium zanguebaricum
(Ehrenberg, 1872) |
 Anthocyrtium anthemis
Haeckel, 1887 |  Aphetocyrtis catalexis
Sanfilippo and Caulet, 1998 |
 Aphetocyrtis gnomabax
Sanfilippo and Caulet, 1998 |  Aphetocyrtis rossi
Sanfilippo and Caulet, 1998 |
 Arachnocorallium calvata
Petrushevskaya, 1971 |  Arachnocorys umbellifera
Haeckel, 1862 |
 Arachnosphaera dichotoma
Jørgensen, 1900 |  Archipilium macropus
(Haeckel, 1887) |
 Archipilium orthopterum
Haeckel, 1887 |  Archipilium quasimacroporum
Wang and Yang, 1992 |
 Artobotrys borealis
(Cleve, 1899) |  Artophormis cf. gracilis
Riedel, 1959 |
 Artopilium undulatum
Popofsky, 1913 |  Artostrobium doliolum
Riedel and Sanfilippo, 1971 |
 Artostrobium miralestense
(Campbell and Clark, 1944) |  Artostrobus annulatus
(Bailey, 1856) |
 Artostrobus joergenseni
Petrushevskaya, 1967 |  Artostrobus quadriporus
Bjørklund, 1976 |
 Artostrobus(?) pretabulatus
Petrushevskaya, 1975 |  Astrosphaera hexagonalis
Haeckel, 1887 |
 Aulacantha scolymantha
Haeckel, 1862 |  Axoprunum (?) monostylum
Caulet, 1986 |
 Axoprunum stauraxonium
Haeckel, 1887 |
