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Quantouendinium symmetricum
| symmetricum | |
| He Chengquan, Gao Ruiqi and Qiao Xiuyun, (1992) | |
| He Chengquan, Song Zhichen and Zhu Youhua (2009) | |
| Q_symmetricum, He et al., 2009, Nanjing Institute of Geology and Palaeontology, Nanjing 2100089 - 2.jpg | |
| junior synonym | |
