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Author - title
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| details | Early Ordovician | Middle Ordovician | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |
| details | Middle Proterozoic | China(Hopei) | Yan,Y.-Z. Shale-Facies microflora from the Changzhougou Formation (Changcheng System) in Pangjiabu Region, Hebei, China. | 1991 | |
| details | Middle Proterozoic | China(Kiangsi) | Yan,Y.-Z. et al. Significance of Eucaryotic organisms in the microfossil flora of changcheng system | 1993 |