Nigrina
- Citations total:
- 4
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Author - title
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| original | Early Cretaceous | USSR(Omskaya Oblast) | Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous | 1949 | |
| details | Nd | Nd | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 | 1958 | |
| details | Nd | Nd | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 | 1960 | |
| details | Late Maastrichtian | Utah | Lohrengel,C.F. Palynology of the Kaiparowits Formation, Garfield County, Utah. | 1969 |