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