What is it

by Larry Hatch
(Smithville, Oklahoma)

Found at Lake Whitney, Texas

Comments for What is it

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oops!
by: Doug

Larry your photo did not come through. Please resend.

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Geologic Time

Geologic Time Line

Geologic Time Periods

Clock of Eras

Cenozoic Era
  Quaternary
  Neogene
  Paleogene

Mesozoic Era
  Cretaceous
  Jurassic
  Triassic

Paleozoic Era
  Permian
  Carboniferous
  Devonian
  Silurian
  Ordovician
  Cambrian

Precambrian Time

Proterozoic Era

Archean Time

Hadean Time





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