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Impletosphaeridium tenuifilum
| tenuifilum | |
| Cookson, I.C. and Eisenack, A. (1982) | |
| Cookson, I.C. and Eisenack, A. (1982) | |
| C_tenuifilum, Cookson and Eisenack, 1982, Palaeontographica, Abt. B vol.184.jpg | |
| questionably active | |
| 66 | |
| 56 | |
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No synonyms
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