- Coscinodiscus trapeziformis N.V. Rubina
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Nov. Sist. Nizsh. Rast [Bot. Inst. Akad. Nauk SSSR] 1967: 64, pl. I: figs. 2-5.
1967.
(R)
Type locality: Russia: Siberia Tyumenskaya distr.: river Ob: Curgut
upper Oligocene
See Actinocyclus trapeziformis (N.V. Rubina) N.V. Rubina & G.K. Khursevich 1990
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