A New Species of Marskea Florin (Pinopsida) from the Middle Jurassic of the Irkutsk Coal Basin (East Siberia)


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Abstract

The study of conifer twigs from the Middle Jurassic deposits of the Irkutsk Coal Basin, previously described as Sequoia and Taxocladus, shows their morphology and epidermal characters to be similar to those of Marskea leaves. A new species Marskea heeriana N. Nosova et Kiritch. is described. A new combination, Marskea latifolia (Kiritch.) N. Nosova, comb. nov., is proposed for leafy twigs from the Early Cretaceous of the Lena Basin, originally described as Florinia latifolia Kiritch.

About the authors

N. V. Nosova

Komarov Botanical Institute, Russian Academy of Sciences

Author for correspondence.
Email: natanosova@gmail.com
Russian Federation, St. Petersburg, 197376

A. I. Kiritchkova

All-Russia Petroleum Research Exploration Institute

Email: natanosova@gmail.com
Russian Federation, St. Petersburg, 192102

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