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Circulodinium pentagonum
| pentagonum | |
| He Chengquan (1991) | |
| He Chengquan, Song Zhichen and Zhu Youhua (2009) | |
| C_pentagonum, He et al., 2009, Nanjing Institute of Geology and Palaeontology, Nanjing 2100089 - 2.jpg | |
| junior synonym | |
