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Cordosphaeridium n.g. ex Hystrichosphaeridium, Hystrichosphaeridea
| Eisenack, A. | |
| 1963b | |
| Neues Jahrbuch f³r Geol. und Pal., Abhandlungen, vol.118, pp.260-265, pl.1 | |
| Cordosphaeridium n.g. ex Hystrichosphaeridium, Hystrichosphaeridea |
Eisenack, A., 1963; Cordosphaeridium n.g. ex Hystrichosphaeridium, Hystrichosphaeridea. Neues Jahrbuch f³r Geol. und Pal., Abhandlungen, vol.118, pp.260-265, pl.1