Kotel'nyi Island

Plant fossils from the Lower Subformation of the Balyktakh Formation in the Kotel'nyi Island (collection 3897, Geological Institute of the Russian Academy of Sciences, Moscow): A, B — Sphenopteris sp. cf. Coniopteris compressa Vassilevskaya: A — sample no. 1, B — sample no. 2; C, D — Arctopteris cf. kolymensis Samylina: C — sample no. 3а, D — sample no. 4, coniopteroid sori; E — ? Czekanowskia ex gr. rigida Heer, sample no. 5; F — Ginkgoites volnovii Vassilevskaya, sample no. 12; G — Sphenobaiera longifolia (Pom.) Florin, sample no. 6 ; H — Karkenia sp. and Sphenobaiera longifolia (Pom.) Florin leaf fragments, sample no. 7а-1, 7а-2); I – K — Karkenia sp.; I — sample no. 8, J — sample no. 7a-1; K — sample no. 9; L — Pityolepis tollii Nathorst, sample no. 10.

For further details see Herman and Spicer (2010).