Protosphaeridium kerianum
- Citations total:
- 2
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| details | Sinian | China(Tientsin) | Juo,Q. et al. New data on the microfossils in Xiamaling Formation of Qingbaikou System of Jixian County. | 1981 | |
| details | Nd | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |