div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: 祝チバニアン誕生!Chibonion- INTERNATIONAL CHRONOSTRATIGRAPHIC CHART IUGS 73=7 Y JL —T 7 y 70 —Y2 v 202001 International Commission on Stratigraphy 5410±10 635 720 1000 src=https:reader033vdocumentsfrreader033viewer20220502115f5d679d2b1b83389a3e3f7chtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: 祝チバニアン誕生!Chibonion- INTERNATIONAL CHRONOSTRATIGRAPHIC CHART IUGS 73=7 Y JL —T 7 y 70 —Y2 v 202001 International Commission on Stratigraphy 5410±10 635 720 1000 src=https:reader033vdocumentsfrreader033viewer20220502115f5d679d2b1b83389a3e3f7chtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: 祝チバニアン誕生!Chibonion- INTERNATIONAL CHRONOSTRATIGRAPHIC CHART IUGS 73=7 Y JL —T 7 y 70 —Y2 v 202001 International Commission on Stratigraphy 5410±10 635 720 1000 src=https:reader033vdocumentsfrreader033viewer20220502115f5d679d2b1b83389a3e3f7chtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: 祝チバニアン誕生!Chibonion- INTERNATIONAL CHRONOSTRATIGRAPHIC CHART IUGS 73=7 Y JL —T 7 y 70 —Y2 v 202001 International Commission on Stratigraphy 5410±10 635 720 1000 src=https:reader033vdocumentsfrreader033viewer20220502115f5d679d2b1b83389a3e3f7chtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: 祝チバニアン誕生!Chibonion- INTERNATIONAL CHRONOSTRATIGRAPHIC CHART IUGS 73=7 Y JL —T 7 y 70 —Y2 v 202001 International Commission on Stratigraphy 5410±10 635 720 1000 src=https:reader033vdocumentsfrreader033viewer20220502115f5d679d2b1b83389a3e3f7chtml5thumbnails5jpg width=142 height=106 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