Fenchel, C.Bernard, Esteban, B.J.Findlay, P.J.Hansen & Iversen (1995: 72, figs 15c, 16a-c)
Additional ReferencesSimpson et al. (1996: 213, figs 2-25)
Cells colourless, ovoid, with somewhat pointed ends, 16-25 µm long, 8-10 µm diameter, biflagellate. Flagella equal, c. 2.5 times cell body length, curved or helical, emerging from a large anterior depression. Cell body covered with longitudinally arranged rod-shaped bacteria (Fig. 11.3c). Living cells swim slowly, spiralling around their long axis.
Ellis Fjord, near Davis Station, East Antarctica; Mariager Fjord, Denmark (Fenchel et al., 1995).
Electron microscope studies have demonstrated that P. mariagerensis does not possess a pellicle (Simpson et al., 1996), a feature typical of the euglenoids. It is currently regarded as Euglenozoa incertae sedis until further studies clarify its taxonomic position (Simpson et al.,1996).