Punctatisporites firmus
- Citations total:
- 4
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Author - title
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| details | Westphalian B | Germany | Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. | 1944 | |
| details | Middle Pennsylvanian | Illinois | Kosanke,R.M. Pennsylvanian spores of Illinois and their use in correlation. | 1950 | |
| details | Namurian | Westphalian B | Italy | Francavilla,F. The spores of the Hochwipfel Flysch. | 1965 |
| details | Late Westphalian B | Germany | Smith,A.H.V. Genus Verrucosisporites, Ibrahim,1933, emend. | 1971 |