Tetrahedral tetrads
- Citations total:
- 2
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| details | Caradocian | Libya | Gray,J. et al. Caradocian land plant microfossils from Libya. | 1982 | |
| details | Late Permian | Greenland | Visscher,H. et al. Environmental mutagenesis during the end-Permian ecological crisis. | 2004 |