Geological Time:
the image is published under
CC BY-NO-SA in the World Foraminifera Database
View of a specimen of Dimorphina compacta (Brady, Parker & Jones, 1870)
The identification is based upon:
, : Brady, H.B.; Parker, W.K.; Jones, T.R. (1870). A monograph of the genus Polymorphina. Transactions of the Linnean Society of London. 27[1871]: 197-253. Plate , Fig.