Global Boundary Stratotype Section and Point

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111	PDF Document Add to Reading List Source URL: micropress.org Language: English Geochronology Geologic time scale Earth sciences Chronostratigraphy Geological unit Formation Stage Lithostratigraphy Global Boundary Stratotype Section and Point Geology Historical geology Stratigraphy
112	PDF Document Add to Reading List Source URL: dialnet.unirioja.es Language: English Geological history of Earth Geologic time scale Geochronology Paleobiology Units of time Paibi Cambrian Global Boundary Stratotype Section and Point Fortune Head Geology Historical geology Stratigraphy