Stratotype Point Base of Cambrian Stage 3
http://resource.geosciml.org/classifier/ics/ischart/BaseCambrianSeries2SP
| label | Stratotype Point Base of Cambrian Stage 3 | |||||||
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| ratified GSSP |  |
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| correlation event | Trilobites -- their FAD | |||||||
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| represents boundary |
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| see also | index.html original | |||||||