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Cleistosphaeridium
| Cleistosphaeridium | |
| Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1966) | |
| Active | |
| Family Gonyaulacales/Uncertain | |
| diversispinosum | |
| 166 | |
| 4 | |
|
No synonyms
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