Devuyst, F.-X.; Kalvoda, J. (2007). Early evolution of the genus Eoparastaffella (Foraminifera) in Eurasia: The "interiecta group" and related forms, Late Tournaisian to Early Visean (Mississippian). The Journal of Foraminiferal Research. 37(1): 69-89.
Early evolution of the genus Eoparastaffella (Foraminifera) in Eurasia: The "interiecta group" and related forms, Late Tournaisian to Early Visean (Mississippian)