Membraneis challengeri (Grunow) Paddock 1988 (Guiry et al. 2020)
Class: Bacillariophyceae, Subclass: Bacillariophycidae, Order: Naviculales, Family: Naviculaceae, Genus: Membraneis

Tropidoneis antarctica (Grunow) Cleve 1894 is a more commonly used name (Cupp 1943, Shim 1976, Horner 2002) and is considered a synonym for Membraneis challengeri. Basionym is Navicula challengeri (Hasle et al. 1996: pp. 286-287) https://www.algaebase.org/search/species/detail/?species_id=48736 .

Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 June 2020. https://www.algaebase.org/search/species/detail/?species_id=44946

pp. 197-198. Cupp, E. E. (1943). Marine Plankton Diatoms of the West Coast of North America. Bull. Scrips. Inst. Oceanography. 5: 1-238.

pp. 284-285. Hasle, G.R. & Syvertsen, E.E. (1997). Marine Diatoms. In: Identifying Marine Phytoplankton. (Tomas, C.R. Eds), pp. 90-93. San Diego: Academic Press.

p. 244a, fig. 15. Shim, J. H. (1976). Distribution and Taxonomy of Planktonic Marine Diatoms in the Strait of Georgia, B.C. Phd. Thesis, UBC.