Genus Turriplaca Cavalier-Smith, 2012

Diagnosis: tangential plate scales with irregularly arranged upper-tier holes; outer layer of hollow terminally toothed, cylindrical and robustly columnar, radial spine scales, largely or entirely non-perforated by lateral holes.
Etymol: turris L. tower, because of the robust columnar shape of the spine scales like a round lighthouse tower; placous Gk (a flat cake) refers to the plate scales.

8 species.

Turriplaca triangula,
basionym Pinaciophora triangula Thomsen (1978)
(synonym Rabdiophrys triangula Roijackers and Siemensma, 1988).

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Raphidocystis glabra

August 2, 2019

after Zlatogursky et al., 2018 Raphidocystis glabra Dürrschmidt, 1985 Diagnosis: Periplast 40-50 μm in diameter; spine-scales 4.6–15 μm; plate-scales 6-7 × 3-3.5 μm; tiny teeth

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Raphidocystidae

August 1, 2019

Raphidocystidae Zlatogursky, 2018 Diagnosis: centrohelids with monolayered plate-scales covering cell surface. Plate-scales with a hollow inflected margin. Sometimes trumpet-shaped or tubular spine-scales present, forming an

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Planhoogenraadia liboica

July 31, 2019

P. liboica – from Bonnet, 1979 Planhoogenraadia liboica Bonnet, 1979 Diagnosis: . Test relatively flat, with a dorsal convexity. Shell widest in the center. Aperture deep

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Deharvengia papuensis

July 22, 2019

Deharvengia papuensis, after Bonnet, 1979 Deharvengia papuensis  Bonnet, 1979 Diagnosis: Theca large, ovoid, very regular, colorless. Elliptical pseudostome bordered by a thick yellowish lip or

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