div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=molecular-stratigraphyhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Molecular stratigraphy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsinreader035viewer2022073107575068511a28ab0f07af9cb4html5thumbnails1jpg width=140 height=200 divp© 1975 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=molecular-stratigraphyhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Molecular stratigraphy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsinreader035viewer2022073107575068511a28ab0f07af9cb4html5thumbnails2jpg width=140 height=200 divp© 1975 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=molecular-stratigraphyhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: Molecular stratigraphy loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsinreader035viewer2022073107575068511a28ab0f07af9cb4html5thumbnails3jpg width=140 height=200 divp© 1975 Nature Publishing Grouppdiv