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Fossil Turtle Shell? by: Doug It does look like a turtle shell. Did you find it near Colorado Springs? Get a stratigraphy map of the area in which you found this fossil. If you can pinpoint the place you found the fossil the map will tell you the age of the rocks found on the surface. With that info you can find out if that area was covered with water or dry land. You can also find out if turtles had evolved yet and what other animals were common at that time. This can help you narrow down the search. Turtles have been around for a long time. The first proto-turtles are believed to have existed in the late Triassic Period of the Mesozoic era, about 220 million years ago.

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Young Paleontologist Book and Fossil Set 25 children's books, 24 fossils and 100's of pages of online activities $84.95

18 Piece Fossil Set 18 fossils with identification cards $23.95

Clock of Ers Ebook This ebook is full of extensions, activities, lab sheets, and materials to support the Clock of Eras concepts. $24.95

Geologic Time

Geologic Time Line

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Clock of Eras

Cenozoic Era
  Quaternary
  Neogene
  Paleogene

Mesozoic Era
  Cretaceous
  Jurassic
  Triassic

Paleozoic Era
  Permian
  Carboniferous
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  Silurian
  Ordovician
  Cambrian

Precambrian Time

Proterozoic Era

Archean Time

Hadean Time

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Children's Books on Geologic Periods 13 Books, One for each Period of Geologic time $35.95

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