Chrysotila carterae (Braarud & Fagerland) R.A. Andersen, J.I. Kim, Tittley & H.S. Yoon, 2014

Ignatenko, Marina & Yatsenko-Stepanova, Tatyana, 2023, Coccolithophores in the algal flora from South Urals (Russia) with the description of a new Hymenomonas species, Phytotaxa 609 (1), pp. 55-64 : 59-60

Chrysotila carterae (Braarud & Fagerland) R.A. Andersen, J.I. Kim, Tittley & H.S. Yoon ( Figs. 8, 9 )

≡ Pleurochrysis carterae (Braarud & Fagerland) T. Christensen (1978: 68)

A disc-shaped coccolith (placolith), composed of two interlocking cycles of crystal units, V and R units, which represent the calcite crystals with subvertical (V units) and subradial (R units) orientations of the c-axis relative to the base plate; 2.2–6 × 1.4–1.7 µm in size.

This species was recorded from Zhetykol Lake and Aschisaysky Рond (see Table 2 ).

Figures

FIGURES 8–14. Species of Chrysotila from the reservoirs of the steppe zone of the South Urals (SEM). Figs. 8, 9: Chrysotila carterae. Figs. 10–14: C. roscoffensis. The arrows mark the different types of ornamentation of the distal shield of the placoliths belonging to the single cell. Scale bars: 8–10, 12–14–2 µm, 11–5 µm.