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1,405 Protozoa
- Abacum rudis (A. Combaz) P. Pittau
- Abathomphalus mayaroensis
- Abedinium dasypus (Cachon et Cachon-Enjumet) A.R. Loeblich Jr. et A.R. Loeblich III
- Abollifer prolabens
- Abratopdinium cardioforme S. Mao & B. A. R. Mohr
- Abratopdinium kerguelense S. Mao & B. A. R. Mohr
- Abriolina mediterranea
- Acanthamoeba astronyxis (Ray and Hayes, 1954)
- Acanthamoeba castellanii
- Acanthamoeba comandoni Pussard, 1964
- Acanthamoeba culbertsoni Singh and Das, 1970
- Acanthamoeba griffini Sawyer, 1971
- Acanthamoeba hatchetti Sawyer, et Al., 1977
- Acanthamoeba hyalina (Dob. O'c.)
- Acanthamoeba lenticulata Molet and Ermolieff-braun, 1976
- Acanthamoeba palestinensis (Reich, 1933)
- Acanthamoeba polyphaga (Puschkarew, 1913)
- Acanthamoeba rhysodes (Singh, 1953)
- Acanthamoeba royreba Willaert, et Al., 1978
- Acanthamoeba terricola Pussard, 1964
- Acanthamoeba tubiashi Lewis and Sawyer, 1979
- Acanthocorbis apoda
- Acanthocorbis asymmetrica
- Acanthocorbis campanula
- Acanthocorbis haurakiana
- Acanthocorbis tintinnabulum
- Acanthocorbis unguiculata
- Acanthocystis aculeata Hert. Less.
- Acanthocystis alata
- Acanthocystis algida (Fr.) Kühner
- Acanthocystis aurata Singer
- Acanthocystis auratus Singer
- Acanthocystis bicornis
- Acanthocystis chaetophora
- Acanthocystis cinereoalba (Pat. & Gaillard) Singer
- Acanthocystis cinereoalbus (Pat. & Gaillard) Singer
- Acanthocystis clathrata
- Acanthocystis clavata
- Acanthocystis cordiformis
- Acanthocystis cornuta
- Acanthocystis cubensis (Murrill) Singer
- Acanthocystis cuneiformis
- Acanthocystis discoidea
- Acanthocystis dresscheri
- Acanthocystis eichhorni Ehrenberg
- Acanthocystis erinaceoides
- Acanthocystis flabellata
- Acanthocystis foliacea
- Acanthocystis formosa
- Acanthocystis geogenius (DC.) K�hner 1926
- Acanthocystis granulata
- Acanthocystis harmandii (Pat. & Har.) Singer
- Acanthocystis hepatotrichus (Berk.) Singer
- Acanthocystis hollandiana (Sumst.) Singer
- Acanthocystis hollandianus (Sumst.) Singer
- Acanthocystis horrida Boedijn
- Acanthocystis kilianii
- Acanthocystis latimarginalis
- Acanthocystis longiseta Penard
- Acanthocystis ludibunda Penard
- Acanthocystis microsperma (Speg.) Singer
- Acanthocystis microspermus (Speg.) Singer
- Acanthocystis myriospina
- Acanthocystis nichollsi
- Acanthocystis nyriospina
- Acanthocystis ovata
- Acanthocystis paliformis (Ringtailed Unicornfish,
Humpback Unicornfish,
Humpback Unicorn)
- Acanthocystis pectinata
- Acanthocystis penardi
- Acanthocystis pentinata
- Acanthocystis perpusilla
- Acanthocystis pertusa
- Acanthocystis petalodes var. petalodes (Bull.) Kühner
- Acanthocystis petaloides (Bull.) K�hner 1926
- Acanthocystis plumosa
- Acanthocystis polymorpha
- Acanthocystis portegna (Speg.) Singer
- Acanthocystis portegnus (Speg.) Singer
- Acanthocystis pruinulosa (Pat. & Demange) Singer
- Acanthocystis pruinulosus (Pat. & Demange) Singer
- Acanthocystis pteromorphos
- Acanthocystis pulchra
- Acanthocystis pusilla
- Acanthocystis puttemansi (Henn.) Singer
- Acanthocystis puttemansii (Henn.) Singer
- Acanthocystis pyriformis
- Acanthocystis quadrifurca
- Acanthocystis rasilis
- Acanthocystis reniformis (G. Meyer : Fr.)
- Acanthocystis rhytidos
- Acanthocystis rotundata
- Acanthocystis scaposa
- Acanthocystis spiculifera (Berk.) Boedijn
- Acanthocystis spinifera Greeff
- Acanthocystis stratosus (G.F. Atk.) Singer
- Acanthocystis submastrucata (Henn.) Singer
- Acanthocystis submastrucatus (Henn.) Singer
- Acanthocystis submitis (Speg.) Singer
- Acanthocystis takahashii
- Acanthocystis tropica
- Acanthocystis tubata
- Acanthocystis turfacea Cart.
- Acanthocystis umbraculiformis
- Acanthocystis valdivense
- Acanthocystis valdiviense
- Acanthocystis veliformis
- Acanthocystis viscidulus (Berk. & Broome) Singer
- Acanthodinium spinosum Kofoid
- Acanthoeca brevipoda
- Acanthoeca spectabilis
- Acanthometron elastricum
- Acanthometron pellucida Mueller, 1856
- Acanthostomella gracilis
- Accordiella conica
- Acervulina inhaerens
- Acervulina mabaheti
- Acervulina ogorman
- Achomosphaera antleriformis P. Schiøler
- Achomosphaera argesensis E. Demetrescu
- Achomosphaera recurvata K.P. Jain, S.C.D. Sah & R.Y. Singh
- Achradina pulchra Lohmann
- Aciculella bacillum
- Acineria uncinata
- Acineta collini
- Acineta compressa
- Acineta diversa
- Acineta fluviatilis
- Acineta grahami Allgin, 1955
- Acineta humboltii
- Acineta humoldtii
- Acineta papillifera Kappen
- Acineta tubenosa
- Acineta tuberosa
- Acrasis granulata Tiegh. 1880
- Acrasis rosea L.S. Olive and Stoian. 1960
- Acropisthium mutabile
- Actiniscus canadensis Bursa
- Actiniscus flosculus S. Locker & E. Martini
- Actiniscus laciniatus S. Locker & E. Martini
- Actiniscus pennatus Grunow
- Actiniscus pentasterias (Ehrenberg) Ehrenberg
- Actiniscus pentasterias var. arcticus Bursa
- Actiniscus squamosus S. Locker & E. Martini
- Actinobolina radians
- Actinocyclina asteriscus
- Actinocyclina georgiana
- Actinodinium apsteinii Chatton & Hovasse
- Actinomma inerme
- Actinophrys sol Ehr.
- Actinophrys vesiculata Pen.
- Actinosiphon semmesi
- Actinosphaerium arachnoideum Penard
- Actinosphaerium eichhorni Ehr.
- Adelosina laevigata
- Adenoides eludens (E.C. Herdman) Balech
- Adenoides kofoidi
- Adenoides kofoidii (Herdman) Dodge
- Adercotryma glomerata
- Adercotryma glomeratum
- Adercotryma glomerta
- Adinimonas oviforme Schiller
- Adnatosphaeridium vetusculum R. J. Davey
- Aegyriana paroliva (Kingklip)
- Aeolisaccus amplimuralis
- Aeolisaccus dunningtoni
- Aeolisaccus kotori
- Aeolisaccus tintinniformis
- Aethalium atrum Preuss
- Aethalium ferrincola Schwz.{?}
- Aethalium melaenum Chevall.
- Aethalium septicum var. cinnamomeum Fr.
- Aethalium septicum var. flavum Fr.
- Aethalium septicum var. rufum Fr.
- Aethalium septicum var. septicum (L.) Fr.
- Aethalium septicum var. vaporarium Rabenh.
- Aethalium septicum var. violaceum Fr.
- Aethalium vaporarium Fr.
- Aethalium violaceum Spreng.
- Afghanella sumatrinaeformis
- Agathammina alpina
- Agathammina austoplana
- Agathammina austroalpina
- Agathammina inconstans
- Agathammina iranica
- Agathammina milioloides
- Agathammina pusilla
- Agathamminoides gracilis
- Agglutisolena conica
- Aidelocysta clavata
- Aiora fenestrata
- Aiora perforare R. J. Davey
- Alabamina achanes Loeblich & Tappan
- Alabamina australis
- Alabamina australis australis
- Alabamina californica
- Alabamina creta
- Alabamina decorata
- Alabamina dorsoplana
- Alabamina duprei ceirvoensis gen.?
- Alabamina duprei ciervoensis
- Alabamina jacksonensis
- Alabamina jimrothi
- Alabamina kaasschieteri
- Alabamina kernensis
- Alabamina limbata
- Alabamina midwayensis
- Alabamina minuta
- Alabamina navarroana
- Alabamina obtusa
- Alabamina oschmanni
- Alabamina resigae Chave
- Alabamina scitula
- Alabamina wilcoxensis
- Alabamina wilcoxensis californica
- Alacrinella limnoriae Manier & Ormières ex Manier 1968
- Alacrinella sanjuanensis Hibbits 1979
- Aldorfia dictyota (Cookson & Eisenack) R. J. Davey
- Aldorfia spongiosa (D. J. McIntyre & W. W. Brideaux) R. J. Davey
- Alexandrium acatenella (Whedon & Kofoid) E. Balech
- Alexandrium affine (H. Inoue & Y. Fukuyo) E. Balech
- Alexandrium andersoni Balech
- Alexandrium andersonii Balech
- Alexandrium angustitabulatum F.J.R. Taylor , nom. illeg.
- Alexandrium balechii (Steidinger) F.J.R. Taylor
- Alexandrium catenella (Whedon & Kofoid) E. Balech
- Alexandrium cohorticula (Balech) Balech
- Alexandrium cohorticulum E. Balech
- Alexandrium compressum (Fukuyo, Yoshida & Inoue) Balech
- Alexandrium concavum (K.R. Gaarder) E. Balech
- Alexandrium foedum Balech
- Alexandrium fraterculum (E. Balech) E. Balech
- Alexandrium fraterculus (Balech) Balech
- Alexandrium fundyense Balech
- Alexandrium hiranoi Kita & Fukuyo
- Alexandrium insuetum E. Balech
- Alexandrium kutnerae E. Balech
- Alexandrium leei E. Balech
- Alexandrium lusitanicum E. Balech
- Alexandrium margalefii E. Balech
- Alexandrium minutum Halim
- Alexandrium monilatum (Howell) Balech
- Alexandrium ostenfeldii (Paulsen) Balech & Tangen
- Alexandrium peruvianum (Balech & Mendiola) Balech & Tangen
- Alexandrium pseudogoniaulax (Biecheler) Horoguchi
- Alexandrium pseudogonyaulax (Biecheler) Horiguchi ex Kita & Fukuyo
- Alexandrium satoanum K. Yuki & Y. Fukuyo
- Alexandrium tamarense (Lebour) E. Balech
- Alexandrium tamarense forma excavatum (T. Braarud) G.V. Konovalova
- Alexandrium tamerense
- Alexandrium tamiyavanichi Balech
- Alexandrium taylorii Balech
- Alexandrium tropicale E. Balech
- Alfredosilvestris levinsoni
- Alfredosilvestris punctuli
- Allassoida schlumbergerii
- Allogromia crystallifera
- Allogromia flexibilis
- Allogromia laticollaris
- Allogromia oviformis (Dujardin)
- Allogromia ovoidea
- Allomorphina bullata
- Allomorphina conica
- Allomorphina cretacea
- Allomorphina halli
- Allomorphina macrostoma sp.?
- Allomorphina paleocenica
- Allomorphina subtriangularis
- Allomorphina trochoides
- Alpinophragmium perforatum
- Altinerina meridionalis
- Alveolina boscii
- Alveolina frumentiformis
- Alveolina oblonga
- Alveolina ovoidea
- Alveolina subpyrenaica
- Alveolina vredenburgi
- Alveolinella boscii
- Alveolinella boseii
- Alveolinella quoi
- Alveolinella quoyi
- Alveolophragmium crassimargo
- Alveolophragmium jeffreysi
- Alveolophragmium linki
- Alveolophragmium ringens
- Alveolophragmium scitulum
- Alveophragmium ringens
- Alveosepta jaccardi
- Alveosepta powersi
- Amaurochaete atra (Alb. and Schwein.) Rostaf.
- Amaurochaete comata G. Lister and Brândzã (Alb. and Schwein.) Rostaf.
- Amaurochaete ferruginea T. Macbr. and G.W. Martin
- Amaurochaete minor Sacc. & Ellis
- Amaurochaete speciosa Zukal
- Amaurochaete trechispora T. Macbr. and G.W. Martin 1932
- Amaurochaete tubulina (Alb. and Schwein.) T. Macbr. 1922
- Amiculosphaera umbracula R. Harland
- Amijiella amiji
- Ammoastuta inepta
- Ammoastuta salsa
- Ammobaculites aequale
- Ammobaculites aequalis
- Ammobaculites agglutinans
- Ammobaculites agrestis
- Ammobaculites alaskensis
- Ammobaculites albertensis
- Ammobaculites alexanderi
- Ammobaculites americanus
- Ammobaculites arenarius
- Ammobaculites armasi
- Ammobaculites artutus
- Ammobaculites balkwilli
- Ammobaculites calcareum
- Ammobaculites calcareus
- Ammobaculites cassis
- Ammobaculites coprolithiformis
- Ammobaculites crassus
- Ammobaculites cubensis
- Ammobaculites dilatatus
- Ammobaculites directus
- Ammobaculites diversus
- Ammobaculites eiseli
- Ammobaculites elongatus
- Ammobaculites erectus
- Ammobaculites euides
- Ammobaculites exiguus
- Ammobaculites exilis
- Ammobaculites foliaceum
- Ammobaculites foliaceus
- Ammobaculites fontenensis
- Ammobaculites fontinensis
- Ammobaculites fragmentarius
- Ammobaculites gerkei
- Ammobaculites helvetojurassicus
- Ammobaculites hiberensis
- Ammobaculites irregulariformis
- Ammobaculites irreguliformis
- Ammobaculites leptos
- Ammobaculites lunaris
- Ammobaculites multiformis
- Ammobaculites nummus
- Ammobaculites obliquus
- Ammobaculites parvispira
- Ammobaculites petilus
- Ammobaculites praegoodlandensis
- Ammobaculites pseudospirale
- Ammobaculites pyriformis
- Ammobaculites radstadtensis
- Ammobaculites rectus
- Ammobaculites reophaciformis
- Ammobaculites salsus
- Ammobaculites stephensoni
- Ammobaculites subaequalis
- Ammobaculites subcostosum
- Ammobaculites subcretacea
- Ammobaculites subcretaceus
- Ammobaculites suprajurassicus
- Ammobaculites taylorensis cf.
- Ammobaculites tyrrelli
- Ammobaculites tzankovi
- Ammobaculites vetusta
- Ammobaculites wenonahae
- Ammobaculites zlambachensis
- Ammobaculoides phaulus
- Ammobaculoides plummerae
- Ammobaculoides sibiricus
- Ammodiscella virgilensis
- Ammodiscoides lajollaensis
- Ammodiscoides turbinatus
- Ammodiscus anceps
- Ammodiscus anguillae
- Ammodiscus annularis
- Ammodiscus annulinoides
- Ammodiscus arenaceus
- Ammodiscus asper
- Ammodiscus bradynus
- Ammodiscus catinus
- Ammodiscus cretaceus
- Ammodiscus dominicensis deformis var. cf
- Ammodiscus flavidus
- Ammodiscus ganitinus
- Ammodiscus gaultinus
- Ammodiscus giganteus
- Ammodiscus glabratus
- Ammodiscus grandis
- Ammodiscus gualtinus
- Ammodiscus gullmarensis
- Ammodiscus hashimotoi
- Ammodiscus incertus
- Ammodiscus infimus
- Ammodiscus longexsertus
- Ammodiscus mackenziensis
- Ammodiscus mestayeri Cushman, 1919
- Ammodiscus minimus
- Ammodiscus nitidus
- Ammodiscus nuceus
- Ammodiscus pacificus
- Ammodiscus parri cf.
- Ammodiscus pennyi
- Ammodiscus plicatus
- Ammodiscus roessleri
- Ammodiscus semiconstrictus
- Ammodiscus siliceus
- Ammodiscus spp
- Ammodiscus tenuis
- Ammodiscus tenuissimus
- Ammodiscus veteranus
- Ammodochium complexum P. Dumitrica & K. Perch-Nielsen
- Ammodochium danicum
- Ammodochium fletcheri H. Y. Ling
- Ammodochium novum K. Perch-Nielsen
- Ammodochium serotinum S. Locker & E. Martini
- Ammoglobigerina globigeriniformis
- Ammolagena clavata
- Ammolagena gaultina
- Ammomarginulina asperata
- Ammomarginulina cragini
- Ammomarginulina fluvialis
- Ammomarginulina foliacea
- Ammomarginulina tenuimargo
- Ammomassilina alveoliniformis
- Ammomassilina clypeoarenula Loeblich & Tappan
- Ammonia annectens
- Ammonia aoteana
- Ammonia aoteanus (Finlay, 1939)
- Ammonia batava
- Ammonia beccari
- Ammonia beccari tepida
- Ammonia beccarii
- Ammonia beccarii batava
- Ammonia beccarii multigranulata
- Ammonia beccarii parkinsoniana
- Ammonia beccarii tepida
- Ammonia beccarii variant
- Ammonia beccaruu
- Ammonia dentata
- Ammonia ex parkinsoniana
- Ammonia indica
- Ammonia jacksoni
- Ammonia japonica
- Ammonia ketienziensis
- Ammonia limbatobeccarii
- Ammonia linneta
- Ammonia multigranulata
- Ammonia papillosa
- Ammonia parkinsonia
- Ammonia parkinsoniana
- Ammonia pauciloculata
- Ammonia polyrraphes
- Ammonia punctatogranosa
- Ammonia rolshauseni
- Ammonia sarmientoi
- Ammonia sobrina
- Ammonia sobrinus
- Ammonia takanabensis
- Ammonia tepida
- Ammonia translucens
- Ammoscalaria pseudospiralis
- Ammoscalaria runiana
- Ammoscalaria tenuimargo
- Ammosphaeroidina sphaeroidiniformis
- Ammotium cassis
- Ammotium dilatatum
- Ammotium directum
- Ammotium distinctum
- Ammotium salsum
- Ammovertella bulbosa
- Ammovertella delicata
- Ammovertella delicatula
- Ammovertella elevata
- Ammovertella inclusa
- Ammovertella polygyra
- Ammovertella prodigalis
- Ammovertella tornella
- Amoeba actinophora
- Amoeba alba Greeff
- Amoeba borokensis
- Amoeba discoides Sch.
- Amoeba dubia Sch.
- Amoeba fibrillosa Greeff
- Amoeba glebae
- Amoeba gorgonia Pen.
- Amoeba granulosa Gruber
- Amoeba guttula Duj.
- Amoeba kerrii
- Amoeba laureata Greeff
- Amoeba leningradensis
- Amoeba lescherae
- Amoeba lescheri
- Amoeba limicola Rhumb.
- Amoeba lucens Frenzel
- Amoeba muralis Penard
- Amoeba nitida Penard
- Amoeba nobilis Penard
- Amoeba papyracea Penard
- Amoeba peritissime Penard
- Amoeba proteus (Pal.)
- Amoeba radiosa Ehr.
- Amoeba sphaeronucleolus Greeff
- Amoeba spumosa Grub.
- Amoeba striata Pen.
- Amoeba taylorae
- Amoeba terricola Greeff
- Amoeba verrocosa
- Amoeba verrucosa Ehrenberg
- Amoeba vespertilio Pen.
- Amoeba villosa
- Amoebidium appalachense Siri, M.M. White & Lichtw. 2006
- Amoebidium australiense Lichtw. & M.C. Williams 1992
- Amoebidium colluviei Lichtw. 1998
- Amoebidium parasiticum Cienk. 1861
- Amoebidium poissoni "Duboscq
- Amoebidium recticola Chatton 1906
- Amoebophyra ceratii (Koeppen) J. Cachon
- Amoebophyra stycholonchae Koeppen
- Amoebosporus saccharinus Ivimey Cook 1932
- Amoebosporus vasculorum Ivimey Cook 1932
- Amoenoscopa caudata
- Amphesolenia bidentata
- Amphesolenia bifurcata
- Amphesolenia brevicauda
- Amphesolenia claviceps
- Amphesolenia elongata
- Amphesolenia globifera
- Amphesolenia inflata
- Amphesolenia lemmermanni
- Amphesolenia palaeotheroides
- Amphesolenia palmata
- Amphesolenia rectangulata
- Amphesolenia schauinslandi
- Amphesolenia schroederi
- Amphesolenia thrinax
- Amphiceratium fusus (Ehrenberg Vanhoeffen
- Amphicoryna catesbyi
- Amphicoryna hirsuta
- Amphicoryna hispida
- Amphicoryna intercellularis
- Amphicoryna leurodeira Loeblich & Tappan
- Amphicoryna meringella Loeblich & Tappan
- Amphicoryna pletmosiana
- Amphicoryna scalaris
- Amphidiniella sedentaria Horiguchi
- Amphidiniopsis arenaria M. Hoppenrath
- Amphidiniopsis cristata M. Hoppenrath
- Amphidiniopsis dentata M. Hoppenrath
- Amphidiniopsis galericulata M. Hoppenrath
- Amphidiniopsis hexagona S. Yoshimatsu, S. Toriumi, & J.D. Dodge
- Amphidiniopsis hirsutum (Balech) Dodge
- Amphidiniopsis kofoidii Woloszynska
- Amphidiniopsis korewalensis Shauna Murray & D.J. Patterson
- Amphidiniopsis pectinaria
- Amphidiniopsis sibbaldii K.H. Nicholls
- Amphidiniopsis swedmarkii (Balech) Dodge
- Amphidiniopsis uroensis Toriumi, Yoshimatsu & Dodge
- Amphidinium acutissimum Schiller
- Amphidinium acutum Lohmann
- Amphidinium aeschrum
- Amphidinium amphidinioides (Geitler) Schiller
- Amphidinium amphidinoides
- Amphidinium belauense A.T. Banaszak, R. Iglesias-Prieto & R.K. Trench
- Amphidinium bipes Herdman
- Amphidinium boekhoutensis Caljon
- Amphidinium boggayum Shauna Murray & D.J. Patterson
- Amphidinium britannicum (Herdmann) Lebour
- Amphidinium carbunculus Conrad & Kufferath
- Amphidinium carterae Hulburth
- Amphidinium carteri
- Amphidinium celestinum Conrad & Kufferath
- Amphidinium coeruluem Conrad
- Amphidinium conradii J. Schiller
- Amphidinium conus Schiller
- Amphidinium corallinum Conrad & Kufferath
- Amphidinium corpulentum Kofoid & Swezy
- Amphidinium corrugatum Larsen & D.J. Patterson
- Amphidinium crassum Lohmann
- Amphidinium cristatum Ballantine
- Amphidinium cryophilum G.J. Wedemayer, L.W. Wilcox & L.E. Graham
- Amphidinium curvatum Schiller
- Amphidinium cyaneoturbo Conrad & Kufferath
- Amphidinium discoidale (Dies) Kofoid & Swezy
- Amphidinium dubium Conrad & Kufferath
- Amphidinium elegans Grell & Wohlfarth-Bottermann
- Amphidinium elenkinii Skvortsov
- Amphidinium emarginatum (Dies) Kofoid & Swezy
- Amphidinium extensum
- Amphidinium flagellans Schiller
- Amphidinium flagellum
- Amphidinium flexum Herdman
- Amphidinium gibbosum (L. Maranda & Y. Shimizu) Flø Jørgensen & Shauna Murray
- Amphidinium glabrum M. Hoppenrath & Y. B. Okolodkov
- Amphidinium glaucum Conrad
- Amphidinium globosum Schröder
- Amphidinium hadai Balech, 1976 (Panamic Green Moray,
Chestnut Moray)
- Amphidinium herdmanii Kofoid & Swezy
- Amphidinium hoefleri Schiller & Diskus
- Amphidinium incoloratum Campbell
- Amphidinium inflatum
- Amphidinium kesselitzii Schiller
- Amphidinium kesslitzi
- Amphidinium lacunarum Skuja
- Amphidinium lacustre Stein
- Amphidinium lanceolatum Schrdder
- Amphidinium latum Lebour
- Amphidinium lilloense Conrad & Kufferath
- Amphidinium longum Lohmann
- Amphidinium macrocephalum Conrad & Kufferath
- Amphidinium mammillatum Conrad & Kufferath
- Amphidinium manannini Herdman
- Amphidinium mootonorum Shauna Murray & D.J. Patterson
- Amphidinium mucicolum Conrad
- Amphidinium operculatum Claparède & Lachmann
- Amphidinium ornithocephalum Conrad
- Amphidinium ovoideum Lemmermann
- Amphidinium ovum Herdman
- Amphidinium pelagicum Lebour
- Amphidinium phthartum Skuja
- Amphidinium poecilochroum Larsen
- Amphidinium prismaticum (Conrad) J. Schiller
- Amphidinium psammophilum Conrad & Kufferath
- Amphidinium psittacus Larsen
- Amphidinium purpureum Conrath & Kufferath
- Amphidinium salinum Ruinen
- Amphidinium scissum Koifoid & Swezy
- Amphidinium semilunatum Herdman
- Amphidinium sphagnicola Conrad
- Amphidinium sphenoides WüIff
- Amphidinium stellatum Conrad & Kufferath
- Amphidinium stigmatum Schiller
- Amphidinium sulcatum Kofferath
- Amphidinium testudo Herdman
- Amphidinium tortum Conrad & Kufferath
- Amphidinium trochodinioides Conrad & Kufferath
- Amphidinium trulla Shauna Murray, Rhodes & Flø Jørgensen
- Amphidinium turbo
- Amphidinium vasculum
- Amphidinium vigrense Woloszynska
- Amphidinium vitreum E.C. Herdman
- Amphidinium vittatum Conrad & Kufferath
- Amphidinium yuroogurrum Shauna Murray & D.J. Patterson
- Amphidoma acuminata Stein
- Amphidoma caudata Halldal
- Amphidoma caudatum
- Amphidoma nucula Stein
- Amphidoma steini
- Amphileptus anser
- Amphileptus claparadei
- Amphileptus claperedei Stein
- Amphileptus fasciola
- Amphileptus folium
- Amphileptus longicollis
- Amphileptus margaritifer
- Amphileptus meleagris
- Amphileptus moniliger
- Amphileptus ovum
- Amphileptus papillosus
- Amphileptus pleurosigma
- Amphileptus procerus
- Amphileptus punctatus
- Amphileptus puntatus
- Amphileptus viridis
- Amphileptus vorax
- Amphilonche messanensis
- Amphimorphina amchitkaensis
- Amphimorphina becki
- Amphimorphina californica
- Amphimorphina haueri
- Amphimorphina ignota
- Amphimorphina jenkinsi
- Amphimorphina lirata cf.
- Amphimorphina yazooensis
- Amphisiella thiophaga
- Amphisolenia bidentata Schröer
- Amphisolenia brevicaudata Kofoid
- Amphisolenia extensa Kofoid
- Amphisolenia globifera Stein
- Amphisolenia inflata Murray & Whitting
- Amphisolenia lemmermanni
- Amphisolenia palaeotheroides
- Amphisolenia palmata Stein
- Amphisolenia rectangulata Kofoid
- Amphisolenia schroederi
- Amphisolenia schroeteri Kofoid
- Amphisolenia spinulosa Kofoid
- Amphisolenia thrinax
- Amphisolenia truncata Kofoid & Michener
- Amphisorus hemprichii
- Amphistegina angulata
- Amphistegina bicirculata
- Amphistegina bowdenensis var.
- Amphistegina californica
- Amphistegina chipolensis
- Amphistegina gibbosa
- Amphistegina haueri
- Amphistegina hauerina
- Amphistegina lessoni
- Amphistegina lessonii
- Amphistegina lobifera
- Amphistegina madagascarensis
- Amphistegina madagascariensis
- Amphistegina parvula
- Amphistegina pregrimsdalei
- Amphistegina radiata
- Amphistegina simiensis
- Amphistegina taberana
- Amphoratheca iniqua
- Amphorides brandti
- Amphorides laackmanni (Jvrgensen) Strand, 1928 (Slit Branchial Paraliparis)
- Amphorides minor
- Amphorula dodekovae M. Zotto, W.S. Drugg & D. Habib
- Amylax buxus (E. Balech) J. D. Dodge
- Amylax lata Meunier
- Amylax triacantha (Jorgensen) Sournia
- Amyloodinium ocellatum (E. Brown) E. Brown et Hovasse
- Anarma multiruga
- Anaticinella mutiloculata
- Anchispirocyclina lusitanica
- Ancistrocoma pelseneeri
- Ancistrum mytili
- Ancistrumina barbata
- Ancyrophorus angustatus Erichson
- Ancyrophorus aureus Fauvel
- Ancyrophorus carnicus Scheerp.
- Ancyrophorus crassipes Raunk.
- Ancyrophorus gracilis Fagel
- Ancyrophorus grigolettoi Fagel
- Ancyrophorus longipennis Fair.E.L
- Ancyrophorus omalinus Erichson
- Ancyrophorus scheerpeltzi Fagel
- Andalusiella mauthei W. Reigel
- Andersenolina alpina
- Andersenolina cherchiae
- Angulodiscorbis corrugata
- Angulodiscorbis duncani
- Angulodiscus communis
- Angulodiscus gaschei
- Angulogenerina cuneata
- Angulogerina abbreviata
- Angulogerina albatrossi
- Angulogerina angulosa
- Angulogerina angulosa angulosa
- Angulogerina angulosa occidentalis
- Angulogerina bella
- Angulogerina byramensis
- Angulogerina carinata
- Angulogerina cuneata
- Angulogerina fluens
- Angulogerina flueus
- Angulogerina gallowayi
- Angulogerina hannai
- Angulogerina hughesi aff.
- Angulogerina illingi
- Angulogerina jamaicensis
- Angulogerina liebusi
- Angulogerina lornensis
- Angulogerina ocalana
- Angulogerina occidentalis
- Angulogerina pauperata
- Angulogerina selseyensis
- Angulogerina wilcoxensis
- Anisonema acinus Dujardin
- Anisonema acinus forma grande (Stein) Popova & Androssova
- Anisonema alpinum Deflandre
- Anisonema costatum Christen
- Anisonema decoloratum Rauchijajnen
- Anisonema dexiotaxum Skuja
- Anisonema dimorphum Skuja
- Anisonema dimorphum var. lens Skuja
- Anisonema emarginatum Stokes
- Anisonema glaciale
- Anisonema hexagonum Playfair
- Anisonema hexagonum var. elegans Playfair
- Anisonema marinum Skuja
- Anisonema obliquum Roskin
- Anisonema orbiculatum Lackey
- Anisonema ovale G.A. Klebs
- Anisonema platysomum Skuja
- Anisonema prosgeobium Skuja
- Anisonema pusillum Stokes
- Anisonema steinii Skvortzov
- Anisonema strenuum Skuja
- Anisonema striatum Klebs
- Anisonema trepidum
- Anisonema truncatum Stein
- Anisonema variabile Klebs
- Annulocibicides gymnesicus Cushman and Ponton, 1932
- Anomalina acuta
- Anomalina affinis
- Anomalina alazanensis
- Anomalina alazanensis spissiformis
- Anomalina alazensis
- Anomalina alazensis spissiformis
- Anomalina ammonoides
- Anomalina anomalinoides
- Anomalina aotea
- Anomalina aragonensis
- Anomalina atlantis
- Anomalina austriaca
- Anomalina balthica
- Anomalina basilobata
- Anomalina bilateralis
- Anomalina bradyi
- Anomalina californiensis
- Anomalina canimarensis sp.?
- Anomalina capita
- Anomalina capitata
- Anomalina cicatricosa
- Anomalina cicatricosus
- Anomalina colligera Chapman & Parr
- Anomalina complanata
- Anomalina coronata
- Anomalina costiana
- Anomalina crassisepta
- Anomalina danvillensis
- Anomalina desertorum
- Anomalina dorri
- Anomalina dorri aragonensis
- Anomalina farcta
- Anomalina flinti
- Anomalina flintii
- Anomalina garzaensis
- Anomalina glabrata
- Anomalina globosa cf.
- Anomalina globrata Cushman
- Anomalina globulosa
- Anomalina grosserugosa
- Anomalina helicina
- Anomalina illingi
- Anomalina jacksonensis
- Anomalina judas
- Anomalina keenae
- Anomalina loweryi
- Anomalina luxorensis
- Anomalina macraglabra
- Anomalina midwayensis
- Anomalina mississippiensis
- Anomalina navarroensis
- Anomalina nodosa
- Anomalina petita
- Anomalina planulata
- Anomalina pliocenica
- Anomalina polymorpha
- Anomalina pompilioides
- Anomalina pompilioides semicribrata
- Anomalina popenoei
- Anomalina praeacuta
- Anomalina praespissiformis
- Anomalina preacuta
- Anomalina regina
- Anomalina reniformis
- Anomalina rosana
- Anomalina rubiginosa
- Anomalina salinasensis
- Anomalina sampsoni
- Anomalina semicribrata
- Anomalina semipunctata
- Anomalina spissiformis
- Anomalina tennesseensis
- Anomalina torcerensis
- Anomalina umbonata
- Anomalina variolata
- Anomalina vermiculata
- Anomalina welleri
- Anomalinoides acuta
- Anomalinoides bilateralis
- Anomalinoides chathamensis
- Anomalinoides coalingensis
- Anomalinoides danvillensis
- Anomalinoides evolutus gen.?, aff.
- Anomalinoides orbiculus
- Anomalinoides parvumbilia
- Anomalinoides praeacuta
- Anomalinoides rotiensis
- Anomalinoides rubiginosus
- Anomalinoides salinasensis
- Anomalinoides spherica
- Anomalinoides welleri
- Anoplophryopsis ovata
- Aphelophragmina brittanica
- Aphelophragmina pygmaea
- Aphelophragmina semilineata
- Apisoma piscola
- Apolocystis matthaii
- Aprobolocysta varigranosa Duxbury
- Aptea anaphrissa (W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
- Apteodinium ciliatum H. Gocht
- Apteodinium spinosum K. P. Jain & P. Millepied
- Apteodinium spongiosum D. J. McIntyre & W. W. Brideaux
- Arcella angulata
- Arcella arenaria Greeff
- Arcella artocrea Leidy
- Arcella catenata
- Arcella catinus Penard
- Arcella conica Deflandre
- Arcella costata Ehrenberg
- Arcella dentata Ehr.
- Arcella discoides Ehr.
- Arcella gibbosa Penard
- Arcella hemisphaerica Perty
- Arcella megastoma Penard
- Arcella mitrata Leidy
- Arcella polypera
- Arcella polypora Penard
- Arcella pseudascella Penard
- Arcella stellaris Perty
- Arcella vulgaris Ehr.
- Archaediscus convexus
- Archaediscus karreri
- Archaediscus krestovnikovi
- Archaediscus moelleri
- Archaeochitosa clausa
- Archaeochitosa lobosa
- Archaeofavosina naumovae P. K. Maithy
- Archaeofavosina reticulata P. K. Maithy & M. Shukla
- Archaeofavosina sinuta P. K. Maithy
- Archaeoglobigerina blowi
- Archaeoglobigerina bosquensis
- Archaeosphaerodiniopsis verrucosum Rampi
- Archaesphaera crassa
- Archaesphaera minima
- Archaesphaerodiniopsis verrucosa Rampi
- Archaias aduncus
- Archaias angulatus
- Archaias compressus
- Archaias kirkukensis
- Archais aduncus sp.?
- Archais compressus
- Archeoglobigerina blowi
- Archeoglobigerina bosquensis
- Arcuospathidium lionotiforme
- Arcuospathidium vermiforme
- Arcyodes incarnata (Alb. and Schwein.) O.F. Cook 1902
- Arcyodes occidentalis
- Arcyodes vanhooffii
- Arcyrella inermis Racib.
- Arcyrella irregularis Racib.
- Arcyria adnata var. adnata (Batsch) Rostaf.
- Arcyria adnata var. nodulosa T. Macbr.
- Arcyria affinis Rostaf. emend. Nann.-Bremek. 1968
- Arcyria afroalpina Rammeloo 1981
- Arcyria aggregata Yu Li, Shuang L. Chen and H.Z. Li 1993
- Arcyria albida var. albida Pers.
- Arcyria albida var. globosa (Schwein.) Lister
- Arcyria alutacea Schumach.
- Arcyria anglicata nomen nudum
- Arcyria annulifera G. Lister and Torrend
- Arcyria anulifera Torrend
- Arcyria assamica Agnihothr. 1958
- Arcyria atra Schumach.
- Arcyria aurantiaca Raunk.
- Arcyria aureoglobosa Y. Yamam. 1990
- Arcyria bicolor Berk. & M.A. Curtis
- Arcyria biniensis Ejale and L.S. Gill 1992
- Arcyria bonariensis Speg.
- Arcyria brooksea T.N. Lakh. & Mukerji
- Arcyria brooksii T.N. Lakh. and K.G. Mukerji 1980
- Arcyria brunnea
- Arcyria bulbosa S.L. Stephenson and Nann.-Bremek. 1990
- Arcyria calyculata Massee
- Arcyria carletae Hertel
- Arcyria cf cinerea (Bull.) Pers.
- Arcyria cincta Schumach.
- Arcyria cinerea (Bull.) Pers. 1801
- Arcyria cinerea f. cinerea (Bull.) Pers.
- Arcyria cinerea f. subglobosa Meyl.
- Arcyria cinerea var. cinerea (Bull.) Pers.
- Arcyria cinerea var. cribroides Raunk.
- Arcyria cinerea var. digitata (Schwein.) G. Lister
- Arcyria cinnamomea Hazsl.
- Arcyria circinans Fr.
- Arcyria clathroides anon.
- Arcyria clathroides var. clathroides anon.
- Arcyria colloderma S.L. Stephenson and Nann.-Bremek. 1990
- Arcyria congestus (Sommerf.) Berk. & Broome
- Arcyria conjugata Schumach.
- Arcyria cookei Massee
- Arcyria corymbosa M.L. Farr and G.W. Martin 1958
- Arcyria cylindrica Schumach.
- Arcyria dentata Schumach.
- Arcyria denudata (L.) Wettst. 1886
- Arcyria denudata var. denudata (L.) Wettst.
- Arcyria denudata var. globosa Georgev.
- Arcyria denudata var. rosea Solacolu
- Arcyria dictyonema Rostaf.
- Arcyria digitata (Schwein.) Rostaf.
- Arcyria digitata f. digitata (Schwein.) Rostaf.
- Arcyria digitata f. globosa Meyl.
- Arcyria digitata f. subglobosa Meyl.
- Arcyria disseminatus Mar.Mey.
- Arcyria elongata Bong.
- Arcyria exigua Yu Li, Shuang L. Chen and H.Z. Li 1993
- Arcyria fasciculata Dhillon and Nann.-Bremek. 1978
- Arcyria ferruginea Saut. 1841
- Arcyria ferruginea f. ferruginea
- Arcyria ferruginea f. helvetica Torrend
- Arcyria ferruginea f. heterotrichia Torrend
- Arcyria ferruginea var. antverpiensis Robbr. 1975
- Arcyria ferruginea var. ferruginea Saut.
- Arcyria ferruginea var. gabriellae Grove
- Arcyria ferruginea var. helvetica Torrend
- Arcyria flavescens Y. Yamam. 1992
- Arcyria flexuosa Rabenh.
- Arcyria fonsecai Hertel
- Arcyria forstneri Brândz?
- Arcyria friesii Berk. & Broome
- Arcyria fuegiana Aramb. 1972
- Arcyria fuliginea (Cooke & Massee) Massee
- Arcyria fusca Fr.
- Arcyria glauca Lister
- Arcyria globosa Schwein.
- Arcyria glomerata Fr.
- Arcyria gongyloida Q. Wang & Yu Li
- Arcyria hariotii Massee
- Arcyria helvetica (Meyl.) H. Neubert, Nowotny & K. Baumann 1989
- Arcyria hibernica
- Arcyria imperialis (Lister) Yu Li & Q. Wang
- Arcyria incarnata (Pers. ex J.F. Gmelin) Pers.
- Arcyria incarnata f. incarnata (Pers.) Pers.
- Arcyria incarnata var. incarnata (Pers.) Pers.
- Arcyria incarnata var. laxa Brândz?
- Arcyria incarnata var. nodulosa T. Macbr.
- Arcyria inermis Racib.
- Arcyria insignis Kalchbr. and Cooke 1882
- Arcyria insignis var. dispersa Hagelst.
- Arcyria insignis var. insignis Kalchbr. & Cooke
- Arcyria intermedia
- Arcyria intricata Rostaf.
- Arcyria irregularis Racib.
- Arcyria jeskei
- Arcyria lacustris L.G.Krieglst.
- Arcyria lateritia de Bary
- Arcyria leiocarpa (Cooke) G.W. Martin and Alexop.
- Arcyria leprieurii Mont.
- Arcyria lilacina Schumach.
- Arcyria longipes
- Arcyria lucidata (Pers.) Pers.
- Arcyria lutea Schwein.
- Arcyria macrospora Peck
- Arcyria magna Rex
- Arcyria magna f. magna Rex
- Arcyria magna var. magna Rex
- Arcyria magna var. rosea Rex
- Arcyria major (G. Lister) Ing 1967
- Arcyria margino-undulata Nann.-Bremek. and Y. Yamam. 1983
- Arcyria marginoundulata Nann.-Bremek. & Y. Yamam. 1983
- Arcyria melanocephala Schumach.
- Arcyria minor Schwein.
- Arcyria minuta Buchet emend. H. Neubert and Nann.-Bremek. 1979
- Arcyria nepalensis Poelt 1965
- Arcyria nigella Emoto
- Arcyria nodulosa (T.Macbr.) T. Macbr.
- Arcyria nutans (Bull.) Grev. 1824
- Arcyria nutans var. brevissima Racib.
- Arcyria nutans var. nutans (Bull.) Grev.
- Arcyria nutans var. spinosissima Racib.
- Arcyria obvelata (Oeder) Onsberg 1979
- Arcyria occidentalis (T. Macbr.) G. Lister
- Arcyria ochroleuca (Trentep.) Fr.
- Arcyria oerstedii Rostaf. 1875
- Arcyria oerstedioides Flatau & Schirmer
- Arcyria oerstedtii Rostaf. 1875
- Arcyria oerstedtioides Flatau and Schirmer 1983
- Arcyria olivacea Ranesch.{?}
- Arcyria olivaceoglobosa M.L. Farr, S.W. Chapm. and D.W. Mitch. 1979
- Arcyria ornata Widder
- Arcyria orstedii Rost. f. fuliginosa
- Arcyria pallens Wallr.
- Arcyria pallida Berk. & M.A. Curtis
- Arcyria papilla Ejale and L.S. Gill 1992
- Arcyria pausiaca H.W. Keller and Bub.-Zurey 1986
- Arcyria pedicula Hill
- Arcyria poeltii Nann.-Bremek. and Y. Yamam. 1990
- Arcyria pomiformis (Leers) Rostaf. 1875
- Arcyria pomiformis var. pomiformis (Leers) Rostaf.
- Arcyria pseudodenudata Wichanský 1962
- Arcyria punicea var. cribroides Raunk.
- Arcyria punicea var. punicea Pers.
- Arcyria raciborskii Berl.
- Arcyria ramulosa Wigand
- Arcyria riparia L.G. Krieglst. 1992
- Arcyria rubrobrunnea Nann.-Bremek. and Schinner 1986
- Arcyria rufa Schumach.
- Arcyria rufosa S.J. Kaur and K.G. Mukerji 1996
- Arcyria sessilis Hill
- Arcyria silacea Ditmar
- Arcyria similis Racib.
- Arcyria stellfeldi Hertel
- Arcyria stellfeldii Hertel
- Arcyria stipata (Schwein.) Lister emend. Nann.-Bremek. 1982
- Arcyria stipesconfusa Gottsb.
- Arcyria stipitata var. imperialis (Lister) Y. Yamam.
- Arcyria stipitata var. stipitata Lister
- Arcyria straminea Wallr.
- Arcyria stricta Rostaf.
- Arcyria sulcata Dörfelt & A.R. Schmidt
- Arcyria tenuis J. Schröt.
- Arcyria trichioides Corda
- Arcyria tubipapillata
- Arcyria umbrina Schumach.
- Arcyria vermicularis Schumach.
- Arcyria vernicosa Rostaf.
- Arcyria verrucosituba Nann.-Bremek. and Schinner 1986
- Arcyria versicolor W. Phillips
- Arcyria virescens G. Lister
- Arcyria viridis Zoll.
- Arcyria vitellina W. Phillips
- Arcyria winteri Wettst.
- Arcyriatella congregata Hochg. and Gottsb. 1989
- Arenobulimina chapmani
- Arenobulimina cochleata
- Arenobulimina macfadyeni
- Arenobulimina paynei
- Arenoparrella mexicana
- Arenovidalina chialingchiangense
- Arenovidalina chialingchiangensis
- Arenovidalina chiangchiangensis
- Arenovidalina pragsoides
- Articulina antillarum
- Articulina atlantica
- Articulina byramensis
- Articulina carinata
- Articulina fijiensis
- Articulina lineata
- Articulina mayori
- Articulina mucronata
- Articulina multilocularis
- Articulina pacifica
- Articulina paucicostasa
- Articulina paucicostata
- Articulina problema
- Articulina queenslandica Collins
- Articulina sagra
- Articulina sagrai
- Articulina scrobiculata
- Articulina sulcata
- Articulina tubulosa
- Arundinula abyssicola Van Dover & Lichtw. 1986
- Arundinula galatheae Manier & Ormières ex Manier 1968
- Arundinula hapalogaster Hibbits 1979
- Arundinula orconectis Lichtw. 1962
- Arundinula washingtoniensis Hibbits 1979
- Aschemonella catenata
- Aschemonella ramuliformis
- Aschemonella scabra
- Ascobius simplex (Spotted Weever,
Spotted Sandmelt,
Speckled Sandperch,
Ocellated Grubfish,
Blacktail Sandmelt,
Black-tail Grubfish)
- Ascoglena amphoroides (Francé) Lemmermann
- Ascoglena vaginicola Stein
- Ascoglena viridis Popowa
- Askenasia stellaris
- Askenasia volvox
- Aspidisca aculeata (Ehrb., 1838)
- Aspidisca antarctica Corliss & Snyder, 1986
- Aspidisca cicada
- Aspidisca costata (Duj.)
- Aspidisca crenata Fabre-Domergue, 1885
- Aspidisca dentata Kahl, 1928
- Aspidisca fusca Kahl, 1928
- Aspidisca herbicola
- Aspidisca hexenes
- Aspidisca hyalina (A. steini von Buddenbrock, 1920)?
- Aspidisca lynceus Ehr.
- Aspidisca major Madsen
- Aspidisca marsupialis Pen.
- Aspidisca polypoda (Dujardin) Kahl, 1932
- Aspidisca polystyla
- Aspidisca pulcherrima
- Aspidisca quadrilineata Kahl, 1932 (Buchanan’s Bluetail Mullet,
Mullet,
Buchanan’s Blue-tail Mullet,
Blue-tail Mullet,
Bluetail Mullet)
- Aspidisca rotunda Coppellotti, 1995
- Aspidisca sedigita Quennerstedt, 1867
- Aspidisca sulcata Kahl
- Aspidisca terranovae Valbonesi, 1996
- Aspidisca turita
- Aspidisca turrita
- Aspidiscia lynceus
- Aspidiscus dentata
- Asselodiscus primitivus
- Assilina dandotica
- Assilina daviesi
- Assilina exponens
- Assilina granulosa
- Assilina irregularis
- Assilina leymeriei
- Assilina placentula
- Assilina ranikotensis
- Assilina spinosa
- Assilina subspinosa
- Astacolus albatrossi
- Astacolus angustissimus
- Astacolus bochardi
- Astacolus bojarkensis
- Astacolus bronni
- Astacolus calliopsis
- Astacolus callopsis
- Astacolus comptulus
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