Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade discaria Cavalier-Smith, 2021
Clade natates Cavalier-Smith, 2021
Clade photaria Cavalier-Smith, 2021
Clade eucorta Cavalier-Smith, 2021
Superkingdom Corticata Lankester, 1878 - corticates
Kingdom Chromista Caval.-Sm. (1981) - chromists
Subkingdom Harosa Cavalier-Smith, 2010
[crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
Infrakingdom Halvaria Cavalier-Smith, 2010
Superphylum Heterokonta Caval.-Sm. (1986)
Phylum Ochrophyta Caval.-Sm. (1995)
Subphylum Khakista Caval.-Sm. (2000)
Diatomea Kütz. (1844)
Class Bacillariophyceae Haeckel (1878) - pennates
Subclass Bacillariophycidaeᵀ D.G.Mann (1990) - raphid diatoms
Order Naviculales Bessey (1907)
Suborder Naviculineaeᵀ (Bessey) Hendey (1937)
Family Pleurosigmataceae Mereschk. (1903)
Genus Gyrosigma Hassall (1845)
Gyrosigma acuminatum (Kützing) Rabenh. (1853)
Gyrosigma arcticum (Cleve) Cleve (1894)
Gyrosigma attenuatum (Kützing) Rabenh.
Gyrosigma balticum (Ehrenberg) Rabenh. (1853)
Gyrosigma diminutum (Grunow, in Cleve & Grunow) Cleve (1894)
Gyrosigma distortum (W.Sm.) Cleve
Gyrosigma euhippus F.A.S. Sterrenburg & R. Ross
Gyrosigma fasciola (Ehrenberg) J.W.Griff. & Henfr. (1856)
Gyrosigma hippocampus (Ehrenberg) Hassall (1845)
Gyrosigma littorale (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma macrum (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma mediterraneum (Cleve ex Grunow) Cleve (1894)
Gyrosigma nodiferum (Grunow) Reimer (1966)
Gyrosigma obliquum (Grunow, in Cleve & Grunow) Boyer (1927)
Gyrosigma obscurum (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma obtusatum (Sull. & Wormley) C.S. Boyer
Gyrosigma peisonis (Grunow) Hustedt
Gyrosigma prolongatum (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma scalprum (Gaillon) F.A.S. Sterrenburg
Gyrosigma sciotense (Sull.) Cleve
Gyrosigma spenceri (J.W. Bailey ex Quekett) Griffith & Henfr.
Gyrosigma strigilis (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma tenuissimum (W.Sm.) J.W.Griff. & Henfr. (1856)
Gyrosigma wansbeckii (Donkin) Cleve (1894)
Gyrosigma wormleyi (Sull., 1859) Boyer (1922)