Turriplaca denticulata (Thomsen, 1978) Cavalier-Smith, 2012
basionym Pinaciophora denticulata Thomsen (1978)
(synonym Rabdiophrys candelabrum Roijackers and Siemensma, 1988)
Diagnosis: Cells covered by both plate- and spine-scales. The plate-scales are discoid, circular in outline, with a diameter of 3.5-4.5 µm. The proximal plate is perforated by many very minute pores; the distal plate has 5-9 holes and is fused to the proximal plate peripherally and by many internal ridges, forming hexagonal patterns of black dots as seen by TEM. The spine-scales are tubular, 2.9-3.5 µm long, proximally broadened and fused to the circular base plate by several struts, distally also broadened and terminating in up to six minute spines; the apex is open, giving access to the hollow tubular part of the spine-scale.
Ecology: Brackish water. Type location: Dybso Fjord (Denmark). Surface water sample.