IRMNG Taxon list
Abas wittii (Grunow) R. Ross & P.A. Sims, 1980
Abditodentrix asketocomptella Patterson, 1985
Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981)
Abditodentrix rhomboidalis (Millett, 1899)
Abedinium dasypus (Cachon & Cachon-Enjumet) A.R. Loeblich Jr. & A.R. Loeblich III, 1966
Abollifer prolabens Vørs, 1992
Abratopdinium cardioforme S. Mao & B.A.R. Mohr, 1992 †
Abratopdinium kerguelense S. Mao & B.A.R. Mohr, 1992 †
Abrotanifolia barbata Stackhouse, 1809 accepted as Cystoseira barbata (Stackhouse) C. Agardh, 1820
Abrotanifolia discors (Linnaeus) Stackhouse
Abrotanifolia foeniculacea (Linnaeus) Stackhouse
Abrotanifolia loeflingii Stackhouse
Abrotanifolia mucronata (Turner) Stackhouse
Abyssotherma pacifica Brönnimann, Van Dover & Whittaker, 1989 †
Acaenolithus cenomanicus Black, 1973 †
Acanthaulax acanthosphaera (Sarjeant) Sarjeant †
Acanthaulax aceras (Eisenack) Stover & Evitt †
Acanthaulax aculeata (Klement) Stover & Evitt †
Acanthaulax angulosa (Gitmez) Stover & Evitt †
Acanthaulax paliuros (Sarjeant) Sarjeant †
Acanthaulax senta Drugg, 1978 †
Acanthaulax spinosissima (Deflandre) Sarjeant †
Acanthaulax venusta (Klement, 1960) Sarjeant †
Acanthoceras azoricum (Meneghini) Kützing accepted as Ceramium azoricum Meneghini accepted as Ceramium echionotum J.G. Agardh, 1844
Acanthoceras echinophorum (Meneghini) Frauenfeld
Acanthoceras echionotum (J.G. Agardh) Kützing
Acanthoceras madeburgensis Hongimann, 1910
Acanthoceras magdeburgense Honigmann accepted as Acanthoceras zachariasii (Brun) Simonsen
Acanthoceras oxyacanthum Kützing
Acanthoceras shuttleworthianum Kützing, 1842 accepted as Ceramium shuttleworthianum (Kützing) Rabenhorst, 1847
Acanthoceras transcurrens Kützing accepted as Ceramium echionotum J.G. Agardh, 1844
Acanthoceras zachariasii (Brun) Simonsen
Acanthochiasma fusiforme Haeckel, 1861
Acanthochloris bacillifera Pascher
Acanthochloris brevispinosa Pascher, 1930
Acanthochloris hungarica Palik
Acanthochloris ingens Margalef, 1956
Acanthochloris scherffelii Pascher
Acanthochloris verrucosa Ettl
Acanthochrysis echinococcus Conrad, 1931
Acanthochrysis echinocystus (Conrad) Conrad
Acanthochrysis fusiformis Conrad
Acanthocorys umbellifera Haeckel, 1862
Acanthocystis aculeata Hertwig & Lesser, 1874
Acanthocystis chaetophora
Acanthocystis nyriospina
Acanthocystis paliformis Dürrschmidt, 1987
Acanthocystis pelagica
Acanthocystis perpusilla Petersen & Hansen, 1960
Acanthocystis turfacea Cart.
Acanthodesmia vinculata Mueller, 1858
Acanthodesmia viniculata (Mueller) Mueller, 1858 accepted as Acanthodesmia vinculata Mueller, 1858
Acanthodinium caryophyllum Kofoid
Acanthodinium spinosum Kofoid, 1907
Acanthodiscus antarcticus Hajós †
Acanthodiscus clypeolus (Brun) Van Heurck †
Acanthodiscus convexus M. Hajós & H. Stradner †
Acanthodiscus immaculatus (Hanna) V.A. Nikolaev & J.A. Barron †
Acanthodiscus ornatus Hajós †
Acanthodiscus paterus (J.A. Long, D.P. Fuge & J. Smith) V.A. Nikolaev & E. Fourtanier †
Acanthodiscus rugosus Pantocsek †
Acanthodiscus schmidtii Jousé †
Acanthodiscus vulcaniformis Jousé †
Acanthogonyaulax paliuros (Sargeant) Sargeant
Acanthogonyaulax spinifera (Murray & Whitting) H.W. Graham, 1942
Acanthogonyaulax venusta (Klement) Sarjeant
Acanthoica acanthifera Lohmann ex Lohmann, 1913
Acanthoica acanthos Schiller, 1925 accepted as Anacanthoica acanthos (Schiller) Deflandre, 1952
Acanthoica aculeata Kamptner, 1941
Acanthoica bidentula Lecal-Schlauder, 1951
Acanthoica biscayensis A. Kleijne, 1992
Acanthoica brevispina Schiller, 1913
Acanthoica cidaris J. Schlauder
Acanthoica coronata Lohmann, 1903
Acanthoica cucullata J. Lecal-Schlauder, 1951
Acanthoica janchenii Schiller, 1925
Acanthoica lithostratos Schiller, 1926 accepted as Anacanthoica lithostratos (Schiller) Norris, 1984
Acanthoica maxima Heimdal, 1981
Acanthoica monospina Schiller, 1914
Acanthoica ordinata Kamptner, 1941 accepted as Alisphaera ordinata (Kamptner) Heimdal, 1973
Acanthoica ornata Conrad, 1928
Acanthoica quattrospina Lohmann, 1903
Acanthoica rubens Kamptner, 1941
Acanthoica rubus Kamptner, 1941
Acanthoica schilleri Conrad, 1928
Acanthoica trispinosa Ostenfeld
Acantholithium dicopum Haeckel, 1887
Acantholithium stellatum Haeckel, 1887
Acanthometra pellucida Müller, 1858
Acanthometron elastricum
Acanthometron pellucida Mueller, 1856
Acanthoplegma krohni
Acanthosolenia mediterranea F. Bernard
Acanthosphaera actinota Haeckel, 1860
Acanthosphaera acufera Haeckel, 1860
Acanthosphaera castanea Haeckel, 1887
Acanthosphaera dodecastyla Mast, 1910
Acanthosphaera pinchuda Boltovskoy, 1980
Acanthosphaera tenuis Haeckel, 1887
Acanthosphaera tenuissima accepted as Acanthosphaera actinota Haeckel, 1860