Jafar, 1979
From dinoflaj3
Jafar, S.A., 1979: Taxonomy, stratigraphy and affinities of calcareous nannoplankton genus Thoracosphaera Kamptner. 4th International Palynology Conference, Lucknow (1976-1977), Proceedings, v.2, p.1-21, pl.1-6.