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Images in Time
Images in Time

Illustrations by Stephen Greb provided to KGS for educational use

These illustrations of ancient life are provided for educational uses in time lines, coloring books, science reports, and presentations. Copy them as needed or just use them as guides for your own drawings. The images are arranged by time. The numbers before the title of the image are in millions of years before the present. When using images, please reference Stephen Greb (Images In Time.

Paleozoic Era

488 Ordovician Period

488-443 Ordovician life

  1. Ordovician sea floor with cephalopod catching trilobite
  2. Ordovician Period seas
  3. Brachiopods, fossil and in life
  4. Brachiopods on the sea floor
  5. Brachiopod, Platystrophia
  6. Bryozoan (branching) garden on the sea floor
  7. Bryozoan ( Constellaria ) garden on the sea floor
  8. Bryozoan, “chocolate drop”
  9. Bryozoan, massive
  10. Cephalopods
  11. Cephalopod, a squid with a straight shell
  12. Cephalopod (close up of tentacles)
  13. Snail
  14. Graptolite, spiraling arms
  15. Graptolite

480-440 Jawless fish (simple)

470-465 Jawless fish, Arandaspis (an ostracoderm)

465-440 Jawless fish, Sacabambaspsis (an ostracoderm)

443 End-Ordovician mass extinction

Go to Key Links in Earth History for more info and images about earth history

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