Geologic Timescale Bookmark

Geologic Timescale Bookmark



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  • Handmade

A handy tool for students, professionals, and enthusiasts of the Earth sciences, use this bookmark as a reference when reading scientific literature -- or for those times when you just need to step out of the present and get a little perspective.

This bookmark shows the divisions of geologic time to scale, without distorting the relative duration of each division.

The front side breaks down the eons and eras of Earth's history from the present back to coalescing cloud of dust. The reverse side is a close-up of the most recent eon of Earth time (the Phanerozoic) zoomed down into eras, periods, and epochs.

Pair it with our Layers of the Earth Bookmark to make a veritable travel reference guide.

Water and tear resistant coating makes this bookmark durable and ready for fieldwork.

Product Specs:
Size: 2" x 8"
Paper: 15mil Synthetic (water and tear resistant)
Finishing: Round Cut Corners


Estimated arrival

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Dec 3-4

Nov 29

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After you place your order, TwoMoles will take 1-2 business days to prepare it for shipment.

Nov 30-Dec 1

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TwoMoles puts your order in the mail.

Dec 3-4


Estimated to arrive at your doorstep Dec 3-4!

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Ships from New York, NY
Mike McDearmon

Mike McDearmon

Owner of TwoMoles

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This seller usually responds within 24 hours.

TwoMoles made this item with help from
The Marsid-M&M Group, Carle Place, NY

13 reviews 5 out of 5 stars


Serena Prendergast Apr 1, 2020

5 out of 5 stars

This bookmark is very well made and the colors are so pretty. It’s beautiful and so informative! Will be memorizing the different eras 😁 Seller is very friendly and helpful.

Purchased item:

Nancy Steere May 11, 2020

5 out of 5 stars

Purchased item:

siochembio Nov 29, 2019

5 out of 5 stars

Purchased item:

Hunter Benson Jul 6, 2020

5 out of 5 stars

Purchased item: