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rmf[meme] - eras and eons

rmf[meme] - eras and eons
A handy compendium of eons and eras, with annotations.
[although, I think that pterosaurs went extinct at the end of the cretaceous].
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Not my Image : fair use & public education

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 StoneRoad2013
StoneRoad2013 club
Looking at my fossils - I have a very small trilobite, so that will be the oldest thing I own !
17 months ago.

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