Traits Taxon list
Aaptotoichus challengeri Holbourn & Kaminski, 1995 †
Aaptotoichus clavellatus (Loeblich & Tappan, 1946) †
Aaptotoichus mutinensis Haig & McCartain, 2010 †
Aaptotoichus quinnaniensis Haig, 2003 †
Aaptotoichus vallis (Trifonova, 1967) †
Abadehella biconvexa Okimura & Ishii, 1975 †
Abadehella coniformis Okimura & Ishii, 1975 †
Abadehella grandis Pronina-Nestell, 2001 †
Abadehella iwaiensis Kobayashi, 1997 †
Abadehella koryakiensis Daydov in Davydov et al., 1996 †
Abadehella mengcunensis Wang, 2002 †
Abadehella minima Wang in Zhao et al., 1981 †
Abadehella tarazi Okimura & Ishii, 1975 †
Abadehellopsis longlinensis (Lin, Li & Sun, 1990) †
Abadehellopsis pauciseptata Vachard in Krainer, Vachard & Schaffhauser, 2019 †
Abadehellopsis protea (Cushman & Waters, 1928) †
Abadehellopsis regularis (Lin, Li & Sun, 1990) †
Abadehellopsis regularisaeformis (Lin, Li & Sun, 1990) †
Abathomphalus asteroidalis Salaj, 1983 †
Abathomphalus intermedius (Bolli, 1951) †
Abathomphalus mayaroensis (Bolli, 1951) †
Abathomphalus salajensis Solakius, 1983 †
Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981)
Abdullaevia tosbulakensis Suleymanov, 1965 †
Abedinium dasypus (Cachon & Cachon-Enjumet) Loeblich Jr & Loeblich III, 1966
Aberisphaera gambanica Wan, 1991 †
Abollifer globosa Shiratori, Yokoyama & Ishida, 2014
Abollifer prolabens Vørs, 1992
Abrardia catalaunica Bilotte, 1974 †
Abrardia mosae (Hofker, 1955) †
Abratopdinium cardioforme S.Mao & B.A.R.Mohr †
Abratopdinium kerguelense S.Mao & B.A.R.Mohr †
Abriolina mediterranea Luperto, 1964 †
Abuhammadina saidi Abd-Elshafy & Ibrahim, 1990 †
Abyssalia foliformis Gooday & Holzmann, 2020
Abyssalia sphaerica Gooday & Holzmann, 2020
Abyssamina incisa Schnitker & Tjalsma, 1980 †
Abyssamina poagi Schnitker & Tjalsma, 1980 †
Abyssamina quadrata Schnitker & Tjalsma, 1980 †
Abyssotherma pacifica Brönnimann, Van Dover & Whittaker, 1989
Acanthochiasma fusiforme Haeckel, 1861
Acanthochloris bacillifera Pascher, 1938
Acanthochloris brevispinosa Pascher, 1930
Acanthochloris brevispinosa var. brevispinosa Péterfi & Péterfi, 1966
Acanthochloris ingens Margalef, 1956
Acanthochloris scherffelii Pascher, 1938
Acanthochloris verrucosa Ettl, 1977
Acanthodesmia vinculata Mueller, 1858
Acanthodinium caryophyllum Kofoid, 1907
Acanthogonyaulax spinifera (Murray & Whitting) H.W.Graham, 1942
Acantholithium dicopum Haeckel, 1887
Acantholithium stellatum Haeckel, 1887
Acanthometra fusca Müller, 1856
Acanthometra pellucida Müller, 1858
Acanthometron elastricum
Acanthometron pellucida Mueller, 1856 accepted as Acanthometron pellucidum Mueller, 1856
Acanthometron pellucidum Mueller, 1856
Acanthonia echinoides (Claparède & Lachmann, 1858) Haeckel, 1881
Acanthoplegma krohni
Acanthosphaera actinota Haeckel, 1860
Acanthosphaera castanea Haeckel, 1887
Acanthosphaera dodecastyla Mast, 1910
Acanthosphaera pinchuda Boltovskoy, 1980
Acanthosphaera tenuis Haeckel, 1887
Acanthosphaeridium reticulatum M.Hajós & H.Stradner, 1975 †
Acanthostaurus conacanthus Haeckel, 1887
Acanthostaurus nordgaardi Jørgensen, 1899
Acanthostaurus pallidus (Claparède & Lachmann, 1858) Haeckel, 1862
Acanthostaurus purpurascens Haeckel
Acanthostomella conicoides Kofoid & Campbell, 1929
Acanthostomella lata Kofoid & Campbell, 1929
Acanthostomella minutissima Kofoid & Campbell, 1929
Acanthostomella norvegica (Daday, 1887)
Acanthostomella obtusa Kofoid & Campbell, 1929
Acarinina acarinata Subbotina, 1953 † accepted as Acarinina nitida (Martin, 1943) †
Acarinina africana (El-Naggar, 1966) †
Acarinina alticonica Fleisher, 1974 †
Acarinina angulosa (Bolli, 1957) †
Acarinina aquiensis (Loeblich & Tappan, 1957) †
Acarinina aspensis (Colom, 1954) †
Acarinina bollii Shikhlinsky, 1988 †
Acarinina boudreauxi Fleisher, 1974 †
Acarinina bucharensis Khasina, 1972 †
Acarinina bullbrooki (Bolli, 1957) †
Acarinina coalingensis (Cushman & Hanna, 1927) †
Acarinina collactea (Finlay, 1939) †
Acarinina compacta Gudina, 1966
Acarinina convexa Subbotina, 1953 †
Acarinina cuneicamerata (Blow, 1979) †
Acarinina discors Myatlyuk, 1970 †
Acarinina dzegviensis Kacharava, 1960 †
Acarinina echinata (Bolli, 1957) †
Acarinina esnaensis (LeRoy, 1953) †
Acarinina esnehensis (Nakkady, 1950) †
Acarinina falsospiralis Davidzon & Morozova, 1964 †
Acarinina intermedia Subbotina, 1953 †
Acarinina interposita Subbotina, 1953 †
Acarinina kiewensis Morozova, 1959 †
Acarinina mattseensis (Gohrbandt, 1967) †
Acarinina mcgowrani Wade & Pearson, in Berggren et al., 2006 †