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Discorbis ferganensis  Bykova, 1939       

Class: Rotaliata  Subclass: Rotaliana  Order: Discorbida  Family: Discorbidae

found near    Southern Siberian Mountains   Tajikistan   

Geological Time: Cretaceous  Upper Cretaceous  


the drawings are published in the book cited below Mjatliuk


width about 240µm

The identification is based upon:
Mjatliuk. E.V., 1953: Fossil foraminifera of the USSR. Spirillinidae, Rotalliidae, Epistominidae and Asterinidae. Book V.N.I.G.R.I. 11 271 pp. Plate 2-2, Fig. 4

           

dataset number: FEU-1010824
           

Citation:
Mjatliuk. E.V., 1953: Fossil foraminifera of the USSR. Spirillinidae, Rotalliidae, Epistominidae and Asterinidae. Book V.N.I.G.R.I. 11 271 pp. Plate 2-2, Fig. 4