Tetragonidiaceae is a family of cryptomonads which includes two genera. Members of Tetragonidiaceae are distinguished from other cryptomonads by reproduction occurring in a non-motile vegetative phase, as well as the formation of multicellular filaments unlike any other cryptomonad family.Guiry, M.D. & Guiry, G.M. 2025. AlgaeBase. World-wide electronic publication, University of Galway. https://www.algaebase.org; searched on 15 May 2026.
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