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Marophryidae Cavalier-Smith and von der Heyden, 2007

Diagnosis: Centrohelids lacking silica scales but with numerous thin, pointed organic scales tapering towards acute apices. 18S rRNA short, lacking the seven insertions found in Marophryidae.
Type and sole genus Marophrys.

Genus Marophrys Cavalier-Smith and von der Heyden, 2007

Diagnosis as for Marophryidae above.
Type species: Marophrys (=Heterophrys) marina comb. nov.

Marophrys marina (Hertwig and Lesser) Cavalier-Smith and von der Heyden, 2007

Diagnosis: cell diameter 9 – 45 µm. Spicules radially oriented, numerous, length approximately half the cell diameter, tapering abruptly from base to acute tips.

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Spiculophrys

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From Zlatogursky, 2014 Acanthocystis costata Zlatogursky, 2014 Diagnosis: Cell body ca 9.5 µm in diameter. Axopodia 2–3 times longer than cell diameter. Length of spine-scales

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Kinetocyst

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