Replies

To: ETL

This is great. Really helps make those billions of years categorize neatly.

16 posted on 11/04/2017 7:30:42 PM PDT by Beowulf9

To: Beowulf9

Yes, it’s an excellent introduction to geologic time.

46 posted on 11/04/2017 8:18:05 PM PDT by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Nukes. See my FR page)

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