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Geolocation
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Author - title
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Year
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| details | Early Cambrian | Romania | Olaru,L. Using acritarch assemblages to correlate Upper Proterozoic and Lower Paleozoic metamorphic sequences in Romania | 2001 | |
| details | Early Cambrian | Canada(Quebec) | Lavoie,D. et al. Stratigraphic framework for the Cambrian-Ordovician rift and passive margin successions from southern Quebec to western Newfoundland. | 2003 |