Ehrenberg, C.G. (1843), Verbreitung und Einfluss des mikroscopischen Lebens in Sud- und Nord-Amerika. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin: 400, pl. 1.1, fig. 27; pl. 1.3, fig. 21 [comb. nov.]

basionym: Actinocyclus senarius Ehrenb. legitimate

Crosby, L.H. & Wood, E.J.F. (1958), Studies on Australian and New Zealand diatoms. I. Planktonic and allied species. Trans. & Proc. Roy. Soc. New Zealand 85: 483–530 [secondary reference]

Foged, N. (1978), Diatoms in eastern Australia. Biblioth. Phycol 41: 1–243 [secondary reference]

Hallegraeff, G.M. & Jeffrey, S.W. (1984), Tropical phytoplankton species and pigments of continental shelf waters of north and north-west Australia. Marine Ecology Progress Series 20: 59–74 [secondary reference]

Round, F.E., Crawford, R.M. & Mann, D.G. (1990), The diatoms. Biology and morphology of the Genera: - [secondary reference]

Blinn, D.W. in Kociolek, P. & Sullivan, M. (1995), Diatom community structure along salinity gradients in Australian saline lakes: biogeographic comparisons with other continents. A Century of Diatom Research in North America - Special Symposium for Reimer and Patrick Festschrift: - [secondary reference]

Scott, F.J. & Thomas, D.P. in Scott, F.J. & Marchant, H.J. (ed.) (2005), Diatoms. Antarctic Marine Protists: - [secondary reference]

ABRS (2008), Australian Algal Name Index Edn. 2008: - [secondary reference]

• Nutrition: Autotrophic
• Habit: Planktonic
• Habitat: Oceanic
• Graphic: Scott & Thomas 2004: fig 2.18 f

Saunders, K., Lane, C., Cook, S., McMinn, A. & Hallegraeff, G.M. (2010), Benthic diatoms. Algae of Australia: Phytoplankton of Temperate Coastal Waters: 128 [secondary reference]

Entwisle, T.J. & Nairn, L. (2011), Census of Freshwater Algae in Australia. Edn. Version 1.0: - [secondary reference]

• Comment: Vulnerable (ANZECC)
• APC Comment: T.J.Entwisle and L.Nairn (2011) use this taxon concept.
• Distribution: South Australia

McCarthy, P. (2012), Census of Australian Marine Diatoms: - AAL [secondary reference]

nomenclatural synonym: Actinocyclus senarius Ehrenb. legitimate taxonomic synonym: Actinocyclus undulatus Kütz. legitimate taxonomic synonym: Actinoptychus undulatus (Kütz.) Ralfs legitimate

• Distribution: N & NW Australia, Qld (Noosa Head), N.S.W. (Port Stephens, Port Hacking), Vic. (Port Phillip Bay), Tas. (River Derwent, Pedra Branca), W.A. (Perth)
• Ex.distribution: Falkland Islands, Peru, Mexico, U.S.A. (E & NW), Canada (New Brunswick, Nova Scotia), Iceland, British Isles, North Sea, Baltic Sea, Spain, Canary Islands, South Atlantic Ocean, South Africa, Sea of Japan, East China Sea, W Pacific Ocean, New Zealand, Pacific coast of South America, Southern Ocean, Antarctica

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