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Geolocation
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Author - title
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Year
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| details | Early Tremadocian | Argentina(Jujuy) | AceŠ±olaza,G.F. et al. Paleontology and biostratigraphy of the Lower Ordovician strata cropping out at the Abra de Zenta (Cordillera Oriental, Jujuy and Salta provinces), NW Argentina. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) | 2003 | |
| details | Middle Cambrian | Late 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 |