Perotrilites gordianus
- Citations total:
- 3
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| original | Siegenian | Emsian | Spain | Cramer,F.H. Palynology of Silurian and Devonian rocks in northwest Spain. | 1966 |
| original | Late Siegenian | Late Givetian | Spain | Cramer,F.H. Palynology of Silurian and Devonian rocks in northwest Spain. | 1966 |
| details | Late Emsian | Nd | Cramer,F.H. et al. Acritarchs from the La Vid Shales (Emsian to Lower Couvinian) at Colle, Leon, Spain. | 1976 |