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	A Brief History of Geologic Time (PBS Eons) View
	Geology 101 with Willsey, Episode #22: The Geologic Time Scale (Shawn Willsey: Geology Explained) View
	The Scale of Geologic Time (igpcolorado) View
	The Geological Timescale - SHORT VERSION (Science with Thomas Stevenson) View
	GEOLOGY: The Geologic Time Scale (Earth Science Ed) View
	Quick Overview Geologic Time Scale (Matthew Mabrey) View
	explaining geological time scales: from eons to epochs (Yaz Likes Old Stuff) View
	The Geologic Time Scale - the Basics of Geology (Geo Logic) View
	Scientists Calculated The Ultimate Lifespan of Earth's Biosphere! (The Real MLordandGod) View
	Geologic Time Scale (GeoQuest Education) View