Abstract
The ferns of the genus Arctopteris from the Cretaceous deposits of the North-East of Russia (the Aigur, Galimov, Krivorechenskaya, Arman, Amka, Gidra, Kananyga, Tylpegyrgynai, Poperechnaya, Emuneret, Barykov and Rarytkin formations) were re-examined. In the result eight species were included in this genus: A. lenaensis Vassilevskaja (Aptian), A. heteropinnula Kiritchkova (lower–middle Albian), A. kolymensis Samylina (lower–middle Albian), A. obtusipinnata Samylina (lower–middle Albian), A. rarinervis Samylina (lower Albian-Coniacian), A. penzhinensis E. Lebedev (Turonian-Coniacian), A. ilirnensis Golovneva (Turonian-upper Santonian) и A. rarytkinensis Vassilevskaja (Coniacian-Danian). Species A. microphylla Philippova and A. rarinervis are united under the name A. rarinervis.
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