Gyroidina depressaeformis  Bykova, 1953)
 
Class: Rotaliata  Subclass: Rotaliana  Order: Rotaliida  Family: Gavelinellidae
 
found near unknown
   Southern Siberian Mountains   Tajikistan
 
Geological Time: Paleogene  Paleocene  

the drawings are published in the book cited below
 
 
View of a specimen of Gyroidina depressaeformis  Bykova, 1953)

width about 260µm
 
The identification is based upon:
 Mjatliuk. E.V., 1953: Fossil foraminifera of the USSR. Spirillinidae, Rotalliidae, Epistominidae and Asterinidae.  V.N.I.G.R.I. 11 271 pp. Plate 2-4, Fig. 6
 
 
genus.php?no=1010842&aktion=suche
 
dataset number: FEU-1010842
 
 
Citation:
Mjatliuk. E.V., 1953: Fossil foraminifera of the USSR. Spirillinidae, Rotalliidae, Epistominidae and Asterinidae. V.N.I.G.R.I. 11 271 pp. Plate 2-4, Fig 6