The genus Menispermites Lesquereux (angiosperms) in the Cretaceous Grebenka flora of Northeastern Russia

A revision of the angiosperm genus Menispermites from the Grebenka flora (the Krivorechenskaya Formation, late Albian-early Turonian) in Northeastern Russia based on our study of Kryshtofovich’s collection and our field observations allows us to recognize four species: M. minutus (Kryshtofovich) Shczepetov, Herman et Belaya, M. vasetskii Philippova, M. marcovoensis Philippova and M. orientalis Golovneva, sp. nov. A new extended diagnosis of M. minutus is proposed. Geographic and stratigraphic distributions of these species in Northern Asia are discussed. The use of the M. septentrionalis Hollick name for leaf fossils in Northern Asia is not recommended.