Williams, D.M. & Li, J. (1990). Observations on the diatom genus Tetracyclus Ralfs (Bacillariophyta). III. Description of two new species from chinese fossil deposits. British Phycological Journal, 25(4): 335-338
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Williams, D.M. & Li, J.
1990
Observations on the diatom genus Tetracyclus Ralfs (Bacillariophyta). III. Description of two new species from chinese fossil deposits.