Raistrickia obscura
- Citations total:
- 3
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| original | Early Permian | W.Germany(Bavaria) | Helby,R.J. Spore research on the Carboniferous/ Permian boundary at Pfalzer Bergland. | 1966 | |
| details | Autunian | Germany(Saarland) | Reimann,K.U. Palynological investigations of the Carboniferous-Permian boundary in the Saar-Nahe Basin. | 1975 | |
| details | Late Stephanian | Early Autunian | Spain | Doubinger,J. et al. Initial palynologic studies in the Autunian-Stephanian Basin of Guadalcanal (Northern Sevilla Province, Spain). | 1976 |